在编写代码的时候有个神奇的工具总是好的！下面这里收集了 50+ PHP 代码片段，可以帮助你开发 PHP 项目。
这些 PHP 片段对于 PHP 初学者也非常有帮助，非常容易学习，让我们开始学习吧～
1. 发送 SMS
在开发 Web 或者移动应用的时候，经常会遇到需要发送 SMS 给用户，或者因为登录原因，或者是为了发送信息。下面的 PHP 代码就实现了发送 SMS 的功能。
为了使用任何的语言发送 SMS，需要一个 SMS gateway。大部分的 SMS 会提供一个 API，这里是使用 MSG91 作为 SMS gateway。
其中“$authKey = "XXXXXXXXXXX";”需要你输入你的密码，“$senderId = "IKOONK";”需要你输入你的 SenderID。当输入移动号码的时候需要指定国家代码 (比如，美国是 1，印度是 91 )。
语法：
2. 使用 mandrill 发送邮件
Mandrill 是一款强大的 SMTP 提供器。开发者倾向于使用一个第三方 SMTP provider 来获取更好的收件交付。
下面的函数中，你需要把 “ Mandrill.php ” 放在同一个文件夹，作为 PHP 文件，这样就可以使用TA来发送邮件。
$apikey = 'XXXXXXXXXX'; //specify your api key here”这里需要你指定你的 API 密钥（从 Mandrill 账户中获得）。
语法：
为了达到最好的效果，最好按照 Mandrill 的教程去配置 DNS。
3. PHP 函数：阻止 SQL 注入
SQL 注入 或者 SQLi 常见的攻击网站的手段，使用下面的代码可以帮助你防止这些工具。
语法：
4. 检测用户位置
使用下面的函数，可以检测用户是在哪个城市访问你的网站
语法：
5. 获取 Web 页面的源代码
使用下面的函数，可以获取任意 Web 页面的 HTML 代码
语法：
6. 计算喜欢你的 Facebook 页面的用户
语法：
7. 确定任意图片的主导颜色
8. whois 查询
使用下面的函数可以获取任何域名用户的完整细节
语法：
9. 验证邮箱地址
有时候，当在网站填写表单，用户可能会输入错误的邮箱地址，这个函数可以验证邮箱地址是否有效。
10. 获取用户的真实 IP
语法：
11. 转换 URL：从字符串变成超链接
如果你正在开发论坛，博客或者是一个常规的表单提交，很多时候都要用户访问一个网站。使用这个函数，URL 字符串就可以自动的转换为超链接。
12. 阻止多个 IP 访问你的网站
这个代码片段可以方便你禁止某些特定的 IP 地址访问你的网站
13. 强制性文件下载
如果你需要下载特定的文件而不用另开新窗口，下面的代码片段可以帮助你。
语法：
14. 创建 JSON 数据
使用下面的 PHP 片段可以创建 JSON 数据，可以方便你创建移动应用的 Web 服务
15. 压缩 zip 文件
使用下面的 PHP 片段可以即时压缩 zip 文件
16. 解压文件
语法：
17. 缩放图片
18. 使用 mail() 发送邮件
之前我们提供了如何使用 Mandrill 发送邮件的 PHP 代码片段，但是如果你不想使用第三方服务，那么可以使用下面的 PHP 代码片段。
19. 把秒转换成天数，小时数和分钟
语法：
20. 数据库连接
连接 MySQL 数据库
21. 目录清单
使用下面的 PHP 代码片段可以在一个目录中列出所有文件和文件夹
语法：
22. 检测用户语言
使用下面的 PHP 代码片段可以检测用户浏览器所使用的语言
23. 查看 CSV 文件
24. 从 PHP 数据创建 CSV 文件
25. 解析 XML 数据
26. 解析 JSON 数据
27. 获取当前页面 URL
这个 PHP 片段可以帮助你让用户登录后直接跳转到之前浏览的页面
语法：
28. 从任意的 Twitter 账号获取最新的 Tweet
29. 转发数量
使用这个 PHP 片段可以检测你的页面 URL 有多少转发数量
30. 计算两个日期的差
31. 删除文件夹内容
语法：
32. 搜索和高亮字符串中的关键字
语法：
33. 写入文件
34. 根据 URL 下载图片
语法：
35. 检测 URL 是否有效
36. 生成二维码
语法：
37. 计算两个地图坐标之间的距离
语法：
38. 获取一个特定话题标签的所有 Tweets
39. 添加 th,st,nd 或者 rd 作为数字的后缀
语法：
40. 限制文件下载的速度
41. 把文本转换成图片
42. 获取远程文件的大小
语法：
43. 使用 imagebrick 进行 pdf 到图像的转换
44. 使用 tinyurl 生成短网址
语法：
45. youtube 下载链接生成器
使用下面的 PHP 片段可以让你的用户下载 Youtube 视频
46. Facebook 样式的时间戳
语法：
这些 PHP 片段对于 PHP 初学者也非常有帮助，非常容易学习，让我们开始学习吧～
1. 发送 SMS
在开发 Web 或者移动应用的时候，经常会遇到需要发送 SMS 给用户，或者因为登录原因，或者是为了发送信息。下面的 PHP 代码就实现了发送 SMS 的功能。
为了使用任何的语言发送 SMS，需要一个 SMS gateway。大部分的 SMS 会提供一个 API，这里是使用 MSG91 作为 SMS gateway。
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function send_sms($mobile,$msg)
{
$authKey = "XXXXXXXXXXX";
date_default_timezone_set("Asia/Kolkata");
$date = strftime("%Y-%m-%d %H:%M:%S");
//Multiple mobiles numbers separated by comma
$mobileNumber = $mobile;
//Sender ID,While using route4 sender id should be 6 characters long.
$senderId = "IKOONK";
//Your message to send, Add URL encoding here.
$message = urlencode($msg);
//Define route
$route = "template";
//Prepare you post parameters
$postData = array(
'authkey' => $authKey,
'mobiles' => $mobileNumber,
'message' => $message,
'sender' => $senderId,
'route' => $route
);
//API URL
$url="https://control.msg91.com/sendhttp.php";
// init the resource
$ch = curl_init();
curl_setopt_array($ch, array(
CURLOPT_URL => $url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => $postData
//,CURLOPT_FOLLOWLOCATION => true
));
//Ignore SSL certificate verification
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
//get response
$output = curl_exec($ch);
//Print error if any
if(curl_errno($ch))
{
echo 'error:' . curl_error($ch);
}
curl_close($ch);
}
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语法：
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<?php
$message = "Hello World";
$mobile = "918112998787";
send_sms($mobile,$message);
?>
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Mandrill 是一款强大的 SMTP 提供器。开发者倾向于使用一个第三方 SMTP provider 来获取更好的收件交付。
下面的函数中，你需要把 “ Mandrill.php ” 放在同一个文件夹，作为 PHP 文件，这样就可以使用TA来发送邮件。
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function send_email($to_email,$subject,$message1)
{
require_once 'Mandrill.php';
$apikey = 'XXXXXXXXXX'; //specify your api key here
$mandrill = new Mandrill($apikey);
$message = new stdClass();
$message->html = $message1;
$message->text = $message1;
$message->subject = $subject;
$message->from_email = "[email protected]";//Sender Email
$message->from_name = "KOONK";//Sender Name
$message->to = array(array("email" => $to_email));
$message->track_opens = true;
$response = $mandrill->messages->send($message);
}
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语法：
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<?php
$to = "[email protected]";
$subject = "This is a test email";
$message = "Hello World!";
send_email($to,$subject,$message);
?>
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3. PHP 函数：阻止 SQL 注入
SQL 注入 或者 SQLi 常见的攻击网站的手段，使用下面的代码可以帮助你防止这些工具。
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function clean($input)
{
if (is_array($input))
{
foreach ($input as $key => $val)
{
$output[$key] = clean($val);
// $output[$key] = $this->clean($val);
}
}
else
{
$output = (string) $input;
// if magic quotes is on then use strip slashes
if (get_magic_quotes_gpc())
{
$output = stripslashes($output);
}
// $output = strip_tags($output);
$output = htmlentities($output, ENT_QUOTES, 'UTF-8');
}
// return the clean text
return $output;
}
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<?php
$text = "<script>alert(1)</script>";
$text = clean($text);
echo $text;
?>
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使用下面的函数，可以检测用户是在哪个城市访问你的网站
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function detect_city($ip) {
$default = 'UNKNOWN';
$curlopt_useragent = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)';
$url = 'http://ipinfodb.com/ip_locator.php?ip=' . urlencode($ip);
$ch = curl_init();
$curl_opt = array(
CURLOPT_FOLLOWLOCATION => 1,
CURLOPT_HEADER => 0,
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_USERAGENT => $curlopt_useragent,
CURLOPT_URL => $url,
CURLOPT_TIMEOUT => 1,
CURLOPT_REFERER => 'http://' . $_SERVER['HTTP_HOST'],
);
curl_setopt_array($ch, $curl_opt);
$content = curl_exec($ch);
if (!is_null($curl_info)) {
$curl_info = curl_getinfo($ch);
}
curl_close($ch);
if ( preg_match('{<li>City : ([^<]*)</li>}i', $content, $regs) ) {
$city = $regs[1];
}
if ( preg_match('{<li>State/Province : ([^<]*)</li>}i', $content, $regs) ) {
$state = $regs[1];
}
if( $city!='' && $state!='' ){
$location = $city . ', ' . $state;
return $location;
}else{
return $default;
}
}
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<?php
$ip = $_SERVER['REMOTE_ADDR'];
$city = detect_city($ip);
echo $city;
?>
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5. 获取 Web 页面的源代码
使用下面的函数，可以获取任意 Web 页面的 HTML 代码
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function display_sourcecode($url)
{
$lines = file($url);
$output = "";
foreach ($lines as $line_num => $line) {
// loop thru each line and prepend line numbers
$output.= "Line #<b>{$line_num}</b> : " . htmlspecialchars($line) . "\n";
}
}
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<?php
$url = "http://blog.koonk.com";
$source = display_sourcecode($url);
echo $source;
?>
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6. 计算喜欢你的 Facebook 页面的用户
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function fb_fan_count($facebook_name)
{
$data = json_decode(file_get_contents("https://graph.facebook.com/".$facebook_name));
$likes = $data->likes;
return $likes;
}
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<?php
$page = "koonktechnologies";
$count = fb_fan_count($page);
echo $count;
?>
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7. 确定任意图片的主导颜色
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function dominant_color($image)
{
$i = imagecreatefromjpeg($image);
for ($x=0;$x<imagesx($i);$x++) {
for ($y=0;$y<imagesy($i);$y++) {
$rgb = imagecolorat($i,$x,$y);
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> & 0xFF;
$b = $rgb & 0xFF;
$rTotal += $r;
$gTotal += $g;
$bTotal += $b;
$total++;
}
}
$rAverage = round($rTotal/$total);
$gAverage = round($gTotal/$total);
$bAverage = round($bTotal/$total);
}
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8. whois 查询
使用下面的函数可以获取任何域名用户的完整细节
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function whois_query($domain) {
// fix the domain name:
$domain = strtolower(trim($domain));
$domain = preg_replace('/^http:\/\//i', '', $domain);
$domain = preg_replace('/^www\./i', '', $domain);
$domain = explode('/', $domain);
$domain = trim($domain[0]);
// split the TLD from domain name
$_domain = explode('.', $domain);
$lst = count($_domain)-1;
$ext = $_domain[$lst];
// You find resources and lists
// like these on wikipedia:
//
// http://de.wikipedia.org/wiki/Whois
//
$servers = array(
"biz" => "whois.neulevel.biz",
"com" => "whois.internic.net",
"us" => "whois.nic.us",
"coop" => "whois.nic.coop",
"info" => "whois.nic.info",
"name" => "whois.nic.name",
"net" => "whois.internic.net",
"gov" => "whois.nic.gov",
"edu" => "whois.internic.net",
"mil" => "rs.internic.net",
"int" => "whois.iana.org",
"ac" => "whois.nic.ac",
"ae" => "whois.uaenic.ae",
"at" => "whois.ripe.net",
"au" => "whois.aunic.net",
"be" => "whois.dns.be",
"bg" => "whois.ripe.net",
"br" => "whois.registro.br",
"bz" => "whois.belizenic.bz",
"ca" => "whois.cira.ca",
"cc" => "whois.nic.cc",
"ch" => "whois.nic.ch",
"cl" => "whois.nic.cl",
"cn" => "whois.cnnic.net.cn",
"cz" => "whois.nic.cz",
"de" => "whois.nic.de",
"fr" => "whois.nic.fr",
"hu" => "whois.nic.hu",
"ie" => "whois.domainregistry.ie",
"il" => "whois.isoc.org.il",
"in" => "whois.ncst.ernet.in",
"ir" => "whois.nic.ir",
"mc" => "whois.ripe.net",
"to" => "whois.tonic.to",
"tv" => "whois.tv",
"ru" => "whois.ripn.net",
"org" => "whois.pir.org",
"aero" => "whois.information.aero",
"nl" => "whois.domain-registry.nl"
);
if (!isset($servers[$ext])){
die('Error: No matching nic server found!');
}
$nic_server = $servers[$ext];
$output = '';
// connect to whois server:
if ($conn = fsockopen ($nic_server, 43)) {
fputs($conn, $domain."\r\n");
while(!feof($conn)) {
$output .= fgets($conn,128);
}
fclose($conn);
}
else { die('Error: Could not connect to ' . $nic_server . '!'); }
return $output;
}
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语法：
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<?php
$domain = "http://www.blog.koonk.com";
$result = whois_query($domain);
print_r($result);
?>
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9. 验证邮箱地址
有时候，当在网站填写表单，用户可能会输入错误的邮箱地址，这个函数可以验证邮箱地址是否有效。
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function is_validemail($email)
{
$check = 0;
if(filter_var($email,FILTER_VALIDATE_EMAIL))
{
$check = 1;
}
return $check;
}
语法：
<?php
$email = "[email protected]";
$check = is_validemail($email);
echo $check;
// If the output is 1, then email is valid.
?>
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function getRealIpAddr()
{
if (!emptyempty($_SERVER['HTTP_CLIENT_IP']))
{
$ip=$_SERVER['HTTP_CLIENT_IP'];
}
elseif (!emptyempty($_SERVER['HTTP_X_FORWARDED_FOR']))
//to check ip is pass from proxy
{
$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
}
else
{
$ip=$_SERVER['REMOTE_ADDR'];
}
return $ip;
}
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<?php
$ip = getRealIpAddr();
echo $ip;
?>
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11. 转换 URL：从字符串变成超链接
如果你正在开发论坛，博客或者是一个常规的表单提交，很多时候都要用户访问一个网站。使用这个函数，URL 字符串就可以自动的转换为超链接。
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function makeClickableLinks($text)
{
$text = eregi_replace('(((f|ht){1}tp://)[-a-zA-Z0-9@:%_+.~#?&//=]+)',
'<a href="\1">\1</a>', $text);
$text = eregi_replace('([[:space:]()[{}])(www.[-a-zA-Z0-9@:%_+.~#?&//=]+)',
'\1<a href="http://\2">\2</a>', $text);
$text = eregi_replace('([_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})',
'<a href="mailto:\1">\1</a>', $text);
return $text;
}
语法：
<?php
$text = "This is my first post on http://blog.koonk.com";
$text = makeClickableLinks($text);
echo $text;
?>
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12. 阻止多个 IP 访问你的网站
这个代码片段可以方便你禁止某些特定的 IP 地址访问你的网站
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if ( !file_exists('blocked_ips.txt') ) {
$deny_ips = array(
'127.0.0.1',
'192.168.1.1',
'83.76.27.9',
'192.168.1.163'
);
} else {
$deny_ips = file('blocked_ips.txt');
}
// read user ip adress:
$ip = isset($_SERVER['REMOTE_ADDR']) ? trim($_SERVER['REMOTE_ADDR']) : '';
// search current IP in $deny_ips array
if ( (array_search($ip, $deny_ips))!== FALSE ) {
// address is blocked:
echo 'Your IP adress ('.$ip.') was blocked!';
exit;
}
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13. 强制性文件下载
如果你需要下载特定的文件而不用另开新窗口，下面的代码片段可以帮助你。
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function force_download($file)
{
$dir = "../log/exports/";
if ((isset($file))&&(file_exists($dir.$file))) {
header("Content-type: application/force-download");
header('Content-Disposition: inline; filename="' . $dir.$file . '"');
header("Content-Transfer-Encoding: Binary");
header("Content-length: ".filesize($dir.$file));
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="' . $file . '"');
readfile("$dir$file");
} else {
echo "No file selected";
}
}
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语法：
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<php
force_download("image.jpg");
?>
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14. 创建 JSON 数据
使用下面的 PHP 片段可以创建 JSON 数据，可以方便你创建移动应用的 Web 服务
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$json_data = array ('id'=>1,'name'=>"Mohit");
echo json_encode($json_data);
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15. 压缩 zip 文件
使用下面的 PHP 片段可以即时压缩 zip 文件
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function create_zip($files = array(),$destination = '',$overwrite = false) {
//if the zip file already exists and overwrite is false, return false
if(file_exists($destination) && !$overwrite) { return false; }
//vars
$valid_files = array();
//if files were passed in...
if(is_array($files)) {
//cycle through each file
foreach($files as $file) {
//make sure the file exists
if(file_exists($file)) {
$valid_files[] = $file;
}
}
}
//if we have good files...
if(count($valid_files)) {
//create the archive
$zip = new ZipArchive();
if($zip->open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {
return false;
}
//add the files
foreach($valid_files as $file) {
$zip->addFile($file,$file);
}
//debug
//echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status;
//close the zip -- done!
$zip->close();
//check to make sure the file exists
return file_exists($destination);
}
else
{
return false;
}
}
语法：
<?php
$files=array('file1.jpg', 'file2.jpg', 'file3.gif');
create_zip($files, 'myzipfile.zip', true);
?>
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16. 解压文件
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function unzip($location,$newLocation)
{
if(exec("unzip $location",$arr)){
mkdir($newLocation);
for($i = 1;$i< count($arr);$i++){
$file = trim(preg_replace("~inflating: ~","",$arr[$i]));
copy($location.'/'.$file,$newLocation.'/'.$file);
unlink($location.'/'.$file);
}
return TRUE;
}else{
return FALSE;
}
}
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语法：
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<?php
unzip('test.zip','unziped/test'); //File would be unzipped in unziped/test folder
?>
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17. 缩放图片
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function resize_image($filename, $tmpname, $xmax, $ymax)
{
$ext = explode(".", $filename);
$ext = $ext[count($ext)-1];
if($ext == "jpg" || $ext == "jpeg")
$im = imagecreatefromjpeg($tmpname);
elseif($ext == "png")
$im = imagecreatefrompng($tmpname);
elseif($ext == "gif")
$im = imagecreatefromgif($tmpname);
$x = imagesx($im);
$y = imagesy($im);
if($x <= $xmax && $y <= $ymax)
return $im;
if($x >= $y) {
$newx = $xmax;
$newy = $newx * $y / $x;
}
else {
$newy = $ymax;
$newx = $x / $y * $newy;
}
$im2 = imagecreatetruecolor($newx, $newy);
imagecopyresized($im2, $im, 0, 0, 0, 0, floor($newx), floor($newy), $x, $y);
return $im2;
}
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18. 使用 mail() 发送邮件
之前我们提供了如何使用 Mandrill 发送邮件的 PHP 代码片段，但是如果你不想使用第三方服务，那么可以使用下面的 PHP 代码片段。
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function send_mail($to,$subject,$body)
{
$headers = "From: KOONK\r\n";
$headers .= "Reply-To: [email protected]\r\n";
$headers .= "Return-Path: [email protected]\r\n";
$headers .= "X-Mailer: PHP5\n";
$headers .= 'MIME-Version: 1.0' . "\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
mail($to,$subject,$body,$headers);
}
语法：
<?php
$to = "[email protected]";
$subject = "This is a test mail";
$body = "Hello World!";
send_mail($to,$subject,$body);
?>
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function secsToStr($secs) {
if($secs>=86400){$days=floor($secs/86400);$secs=$secs%86400;$r=$days.' day';if($days<>1){$r.='s';}if($secs>0){$r.=', ';}}
if($secs>=3600){$hours=floor($secs/3600);$secs=$secs%3600;$r.=$hours.' hour';if($hours<>1){$r.='s';}if($secs>0){$r.=', ';}}
if($secs>=60){$minutes=floor($secs/60);$secs=$secs%60;$r.=$minutes.' minute';if($minutes<>1){$r.='s';}if($secs>0){$r.=', ';}}
$r.=$secs.' second';if($secs<>1){$r.='s';}
return $r;
}
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<?php
$seconds = "56789";
$output = secsToStr($seconds);
echo $output;
?>
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连接 MySQL 数据库
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<?php
$DBNAME = 'koonk';
$HOST = 'localhost';
$DBUSER = 'root';
$DBPASS = 'koonk';
$CONNECT = mysql_connect($HOST,$DBUSER,$DBPASS);
if(!$CONNECT)
{
echo 'MySQL Error: '.mysql_error();
}
$SELECT = mysql_select_db($DBNAME);
if(!$SELECT)
{
echo 'MySQL Error: '.mysql_error();
}
?>
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使用下面的 PHP 代码片段可以在一个目录中列出所有文件和文件夹
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function list_files($dir)
{
if(is_dir($dir))
{
if($handle = opendir($dir))
{
while(($file = readdir($handle)) !== false)
{
if($file != "." && $file != ".." && $file != "Thumbs.db"/*pesky windows, images..*/)
{
echo '<a target="_blank" href="'.$dir.$file.'">'.$file.'</a>'."\n";
}
}
closedir($handle);
}
}
}
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语法：
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<?php
list_files("images/"); //This will list all files of images folder
?>
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22. 检测用户语言
使用下面的 PHP 代码片段可以检测用户浏览器所使用的语言
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function get_client_language($availableLanguages, $default='en'){
if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
$langs=explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']);
foreach ($langs as $value){
$choice=substr($value,0,2);
if(in_array($choice, $availableLanguages)){
return $choice;
}
}
}
return $default;
}
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23. 查看 CSV 文件
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function readCSV($csvFile){
$file_handle = fopen($csvFile, 'r');
while (!feof($file_handle) ) {
$line_of_text[] = fgetcsv($file_handle, 1024);
}
fclose($file_handle);
return $line_of_text;
}
语法：
<?php
$csvFile = "test.csv";
$csv = readCSV($csvFile);
$a = csv[0][0]; // This will get value of Column 1 & Row 1
?>
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24. 从 PHP 数据创建 CSV 文件
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function generateCsv($data, $delimiter = ',', $enclosure = '"') {
$handle = fopen('php://temp', 'r+');
foreach ($data as $line) {
fputcsv($handle, $line, $delimiter, $enclosure);
}
rewind($handle);
while (!feof($handle)) {
$contents .= fread($handle, 8192);
}
fclose($handle);
return $contents;
}
语法：
<?php
$data[0] = "apple";
$data[1] = "oranges";
generateCsv($data, $delimiter = ',', $enclosure = '"');
?>
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25. 解析 XML 数据
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$xml_string="<?xml version='1.0'?>
<moleculedb>
<molecule name='Benzine'>
<symbol>ben</symbol>
<code>A</code>
</molecule>
<molecule name='Water'>
<symbol>h2o</symbol>
<code>K</code>
</molecule>
</moleculedb>";
//load the xml string using simplexml function
$xml = simplexml_load_string($xml_string);
//loop through the each node of molecule
foreach ($xml->molecule as $record)
{
//attribute are accessted by
echo $record['name'], ' ';
//node are accessted by -> operator
echo $record->symbol, ' ';
echo $record->code, '';
}
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26. 解析 JSON 数据
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$json_string='{"id":1,"name":"rolf","country":"russia","office":["google","oracle"]} ';
$obj=json_decode($json_string);
//print the parsed data
echo $obj->name; //displays rolf
echo $obj->office[0]; //displays google
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27. 获取当前页面 URL
这个 PHP 片段可以帮助你让用户登录后直接跳转到之前浏览的页面
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function current_url()
{
$url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$validURL = str_replace("&", "&", $url);
return validURL;
}
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语法：
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<?php
echo "Currently you are on: ".current_url();
?>
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28. 从任意的 Twitter 账号获取最新的 Tweet
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function my_twitter($username)
{
$no_of_tweets = 1;
$feed = "http://search.twitter.com/search.atom?q=from:" . $username . "&rpp=" . $no_of_tweets;
$xml = simplexml_load_file($feed);
foreach($xml->children() as $child) {
foreach ($child as $value) {
if($value->getName() == "link") $link = $value['href'];
if($value->getName() == "content") {
$content = $value . "";
echo '<p class="twit">'.$content.' <a class="twt" href="'.$link.'" title=""> </a></p>';
}
}
}
}
语法：
<?php
$handle = "koonktech";
my_twitter($handle);
?>
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29. 转发数量
使用这个 PHP 片段可以检测你的页面 URL 有多少转发数量
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function tweetCount($url) {
$content = file_get_contents("http://api.tweetmeme.com/url_info?url=".$url);
$element = new SimpleXmlElement($content);
$retweets = $element->story->url_count;
if($retweets){
return $retweets;
} else {
return 0;
}
}
语法：
<?php
$url = "http://blog.koonk.com";
$count = tweetCount($url);
return $count;
?>
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30. 计算两个日期的差
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<?php
$date1 = date( 'Y-m-d' );
$date2 = "2015-12-04";
$diff = abs(strtotime($date2) - strtotime($date1));
$years = floor($diff / (365*60*60*24));
$months = floor(($diff - $years * 365*60*60*24) / (30*60*60*24));
$days = floor(($diff - $years * 365*60*60*24 - $months*30*60*60*24)/ (60*60*24));
printf("%d years, %d months, %d days\n", $years, $months, $days);
-------------------------------------------------------- OR
$date1 = new DateTime("2007-03-24");
$date2 = new DateTime("2009-06-26");
$interval = $date1->diff($date2);
echo "difference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days ";
// shows the total amount of days (not divided into years, months and days like above)
echo "difference " . $interval->days . " days ";
-------------------------------------------------------- OR
/**
* Calculate differences between two dates with precise semantics. Based on PHPs DateTime::diff()
* implementation by Derick Rethans. Ported to PHP by Emil H, 2011-05-02. No rights reserved.
*
* See here for original code:
* http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/tm2unixtime.c?revision=302890&view=markup
* http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/interval.c?revision=298973&view=markup
*/
function _date_range_limit($start, $end, $adj, $a, $b, $result)
{
if ($result[$a] < $start) {
$result[$b] -= intval(($start - $result[$a] - 1) / $adj) + 1;
$result[$a] += $adj * intval(($start - $result[$a] - 1) / $adj + 1);
}
if ($result[$a] >= $end) {
$result[$b] += intval($result[$a] / $adj);
$result[$a] -= $adj * intval($result[$a] / $adj);
}
return $result;
}
function _date_range_limit_days($base, $result)
{
$days_in_month_leap = array(31, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
$days_in_month = array(31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
_date_range_limit(1, 13, 12, "m", "y", &$base);
$year = $base["y"];
$month = $base["m"];
if (!$result["invert"]) {
while ($result["d"] < 0) {
$month--;
if ($month < 1) {
$month += 12;
$year--;
}
$leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
$days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
$result["d"] += $days;
$result["m"]--;
}
} else {
while ($result["d"] < 0) {
$leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
$days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
$result["d"] += $days;
$result["m"]--;
$month++;
if ($month > 12) {
$month -= 12;
$year++;
}
}
}
return $result;
}
function _date_normalize($base, $result)
{
$result = _date_range_limit(0, 60, 60, "s", "i", $result);
$result = _date_range_limit(0, 60, 60, "i", "h", $result);
$result = _date_range_limit(0, 24, 24, "h", "d", $result);
$result = _date_range_limit(0, 12, 12, "m", "y", $result);
$result = _date_range_limit_days(&$base, &$result);
$result = _date_range_limit(0, 12, 12, "m", "y", $result);
return $result;
}
/**
* Accepts two unix timestamps.
*/
function _date_diff($one, $two)
{
$invert = false;
if ($one > $two) {
list($one, $two) = array($two, $one);
$invert = true;
}
$key = array("y", "m", "d", "h", "i", "s");
$a = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $one))));
$b = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $two))));
$result = array();
$result["y"] = $b["y"] - $a["y"];
$result["m"] = $b["m"] - $a["m"];
$result["d"] = $b["d"] - $a["d"];
$result["h"] = $b["h"] - $a["h"];
$result["i"] = $b["i"] - $a["i"];
$result["s"] = $b["s"] - $a["s"];
$result["invert"] = $invert ? 1 : 0;
$result["days"] = intval(abs(($one - $two)/86400));
if ($invert) {
_date_normalize(&$a, &$result);
} else {
_date_normalize(&$b, &$result);
}
return $result;
}
$date = "2014-12-04 19:37:22";
echo '<pre>';
print_r( _date_diff( strtotime($date), time() ) );
echo '</pre>';
?>
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function Delete($path)
{
if (is_dir($path) === true)
{
$files = array_diff(scandir($path), array('.', '..'));
foreach ($files as $file)
{
Delete(realpath($path) . '/' . $file);
}
return rmdir($path);
}
else if (is_file($path) === true)
{
return unlink($path);
}
return false;
}
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语法：
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<?php
$path = "images/";
Delete($path); // This will delete images folder along with its contents.
?>
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32. 搜索和高亮字符串中的关键字
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function highlighter_text($text, $words)
{
$split_words = explode( " " , $words );
foreach($split_words as $word)
{
$color = "#4285F4";
$text = preg_replace("|($word)|Ui" ,
"<span style=\"color:".$color.";\"><b>$1</b></span>" , $text );
}
return $text;
}
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<?php
$string = "I like chocolates and I like apples";
$words = "apple";
echo highlighter_text($string ,$words);
?>
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33. 写入文件
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<?
$filename = 'blog.csv';
$fp = fopen($filename, 'w');
$output = " Hello ";
$output .= " World! ";
$output .= "\r\n";
fputs($fp, $output);
fclose($fp);
?>
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34. 根据 URL 下载图片
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function imagefromURL($image,$rename)
{
$ch = curl_init($image);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
$rawdata=curl_exec ($ch);
curl_close ($ch);
$fp = fopen("$rename",'w');
fwrite($fp, $rawdata);
fclose($fp);
}
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语法：
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<?php
$url = "http://koonk.com/images/logo.png";
$rename = "koonk.png";
imagefromURL($url,$rename);
?>
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35. 检测 URL 是否有效
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function isvalidURL($url)
{
$check = 0;
if (filter_var($url, FILTER_VALIDATE_URL) !== false) {
$check = 1;
}
return $check;
}
语法：
<?php
$url = "http://koonk.com";
$check = checkvalidURL($url);
echo $check; //if returns 1 then URL is valid.
?>
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36. 生成二维码
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function qr_code($data, $type = "TXT", $size ='150', $ec='L', $margin='0')
{
$types = array("URL" =--> "http://", "TEL" => "TEL:", "TXT"=>"", "EMAIL" => "MAILTO:");
if(!in_array($type,array("URL", "TEL", "TXT", "EMAIL")))
{
$type = "TXT";
}
if (!preg_match('/^'.$types[$type].'/', $data))
{
$data = str_replace("\\", "", $types[$type]).$data;
}
$ch = curl_init();
$data = urlencode($data);
curl_setopt($ch, CURLOPT_URL, 'http://chart.apis.google.com/chart');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, 'chs='.$size.'x'.$size.'&cht=qr&chld='.$ec.'|'.$margin.'&chl='.$data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
$response = curl_exec($ch);
curl_close($ch);
return $response;
}
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语法：
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<?php
header("Content-type: image/png");
echo qr_code("http://koonk.com", "URL");
?>
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37. 计算两个地图坐标之间的距离
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function getDistanceBetweenPointsNew($latitude1, $longitude1, $latitude2, $longitude2) {
$theta = $longitude1 - $longitude2;
$miles = (sin(deg2rad($latitude1)) * sin(deg2rad($latitude2))) + (cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * cos(deg2rad($theta)));
$miles = acos($miles);
$miles = rad2deg($miles);
$miles = $miles * 60 * 1.1515;
$feet = $miles * 5280;
$yards = $feet / 3;
$kilometers = $miles * 1.609344;
$meters = $kilometers * 1000;
return compact('miles','feet','yards','kilometers','meters');
}
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语法：
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<?php
$point1 = array('lat' => 40.770623, 'long' => -73.964367);
$point2 = array('lat' => 40.758224, 'long' => -73.917404);
$distance = getDistanceBetweenPointsNew($point1['lat'], $point1['long'], $point2['lat'], $point2['long']);
foreach ($distance as $unit => $value) {
echo $unit.': '.number_format($value,4).'';
}
?>
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38. 获取一个特定话题标签的所有 Tweets
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function getTweets($hash_tag) {
$url = 'http://search.twitter.com/search.atom?q='.urlencode($hash_tag) ;
echo "<p>Connecting to <strong>$url</strong> ...</p>";
$ch = curl_init($url);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);
$xml = curl_exec ($ch);
curl_close ($ch);
//If you want to see the response from Twitter, uncomment this next part out:
//echo "<p>Response:</p>";
//echo "<pre>".htmlspecialchars($xml)."</pre>";
$affected = 0;
$twelement = new SimpleXMLElement($xml);
foreach ($twelement->entry as $entry) {
$text = trim($entry->title);
$author = trim($entry->author->name);
$time = strtotime($entry->published);
$id = $entry->id;
echo "<p>Tweet from ".$author.": <strong>".$text."</strong> <em>Posted ".date('n/j/y g:i a',$time)."</em></p>";
}
return true ;
}
|
39. 添加 th,st,nd 或者 rd 作为数字的后缀
|
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|
Friday the 13th
function ordinal($cdnl){
$test_c = abs($cdnl) % 10;
$ext = ((abs($cdnl) %100 < 21 && abs($cdnl) %100 > 4) ? 'th'
: (($test_c < 4) ? ($test_c < 3) ? ($test_c < 2) ? ($test_c < 1)
? 'th' : 'st' : 'nd' : 'rd' : 'th'));
return $cdnl.$ext;
}
|
|
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|
<?php
$number = 10;
echo ordinal($number); //output is 10th
?>
|
40. 限制文件下载的速度
|
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<?php
// local file that should be send to the client
$local_file = 'test-file.zip';
// filename that the user gets as default
$download_file = 'your-download-name.zip';
// set the download rate limit (=> 20,5 kb/s)
$download_rate = 20.5;
if(file_exists($local_file) && is_file($local_file)) {
// send headers
header('Cache-control: private');
header('Content-Type: application/octet-stream');
header('Content-Length: '.filesize($local_file));
header('Content-Disposition: filename='.$download_file);
// flush content
flush();
// open file stream
$file = fopen($local_file, "r");
while(!feof($file)) {
// send the current file part to the browser
print fread($file, round($download_rate * 1024));
// flush the content to the browser
flush();
// sleep one second
sleep(1);
}
// close file stream
fclose($file);}
else {
die('Error: The file '.$local_file.' does not exist!');
}
?>
|
41. 把文本转换成图片
|
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<?php
header("Content-type: image/png");
$string = $_GET['text'];
$im = imagecreatefrompng("images/button.png");
$color = imagecolorallocate($im, 255, 255, 255);
$px = (imagesx($im) - 7.5 * strlen($string)) / 2;
$py = 9;
$fontSize = 1;
imagestring($im, fontSize, $px, $py, $string, $color);
imagepng($im);
imagedestroy($im);
?>
|
42. 获取远程文件的大小
|
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function remote_filesize($url, $user = "", $pw = "")
{
ob_start();
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 1);
if(!empty($user) && !empty($pw))
{
$headers = array('Authorization: Basic ' . base64_encode("$user:$pw"));
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
}
$ok = curl_exec($ch);
curl_close($ch);
$head = ob_get_contents();
ob_end_clean();
$regex = '/Content-Length:\s([0-9].+?)\s/';
$count = preg_match($regex, $head, $matches);
return isset($matches[1]) ? $matches[1] : "unknown";
}
|
语法：
|
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5
|
<?php
$file = "http://koonk.com/images/logo.png";
$size = remote_filesize($url);
echo $size;
?>
|
43. 使用 imagebrick 进行 pdf 到图像的转换
|
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<?php
$pdf_file = './pdf/demo.pdf';
$save_to = './jpg/demo.jpg'; //make sure that apache has permissions to write in this folder! (common problem)
//execute ImageMagick command 'convert' and convert PDF to JPG with applied settings
exec('convert "'.$pdf_file.'" -colorspace RGB -resize 800 "'.$save_to.'"', $output, $return_var);
if($return_var == 0) { //if exec successfuly converted pdf to jpg
print "Conversion OK";
}
else print "Conversion failed.".$output;
?>
|
44. 使用 tinyurl 生成短网址
|
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|
function get_tiny_url($url)
{
$ch = curl_init();
$timeout = 5;
curl_setopt($ch,CURLOPT_URL,'http://tinyurl.com/api-create.php?url='.$url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
|
语法：
|
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5
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<?php
$url = "http://blog.koonk.com/2015/07/Hello-World";
$tinyurl = get_tiny_url($url);
echo $tinyurl;
?>
|
45. youtube 下载链接生成器
使用下面的 PHP 片段可以让你的用户下载 Youtube 视频
|
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|
function str_between($string, $start, $end)
{
$string = " ".$string; $ini = strpos($string,$start); if ($ini == 0) return ""; $ini += strlen($start); $len = strpos($string,$end,$ini) - $ini; return substr($string,$ini,$len); }
function get_youtube_download_link(){
$youtube_link = $_GET['youtube'];
$youtube_page = file_get_contents($youtube_link);
$v_id = str_between($youtube_page, "&video_id=", "&");
$t_id = str_between($youtube_page, "&t=", "&");
$flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id";
$hq_flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=6";
$mp4_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=18";
$threegp_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=17";
echo "\t\tDownload (right-click > save as):\n\t\t";
echo "<a href=\"$flv_link\">FLV</a>\n\t\t";
echo "<a href=\"$hq_flv_link\">HQ FLV (if available)</a>\n\t\t";
echo "<a href=\"$mp4_link\">MP4</a>\n\t\t";
echo "<a href=\"$threegp_link\">3GP</a>\n";
}
|
46. Facebook 样式的时间戳
|
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39
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Facebook (x mins age, y hours ago etc)
function nicetime($date)
{
if(empty($date)) {
return "No date provided";
}
$periods = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
$lengths = array("60","60","24","7","4.35","12","10");
$now = time();
$unix_date = strtotime($date);
// check validity of date
if(empty($unix_date)) {
return "Bad date";
}
// is it future date or past date
if($now > $unix_date) {
$difference = $now - $unix_date;
$tense = "ago";
} else {
$difference = $unix_date - $now;
$tense = "from now";
}
for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
$difference /= $lengths[$j];
}
$difference = round($difference);
if($difference != 1) {
$periods[$j].= "s";
}
return "$difference $periods[$j] {$tense}";
}
|
|
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2
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|
<?php
$date = "2015-07-05 03:45";
$result = nicetime($date); // 2 days ago
?>
|
47、黑名单过滤
|
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|
function
is_spam(
$text
,
$file
,
$split
=
':'
,
$regex
= false){
$handle
=
fopen
(
$file
,
'rb'
);
$contents
=
fread
(
$handle
,
filesize
(
$file
));
fclose(
$handle
);
$lines
=
explode
(
"n"
,
$contents
);
$arr
=
array
();
foreach
(
$lines
as
$line
){
list(
$word
,
$count
) =
explode
(
$split
,
$line
);
if
(
$regex
)
$arr
[
$word
] =
$count
;
else
$arr
[preg_quote(
$word
)] =
$count
;
}
preg_match_all(
"~"
.implode(
'|'
,
array_keys
(
$arr
)).
"~"
,
$text
,
$matches
);
$temp
=
array
();
foreach
(
$matches
[0]
as
$match
){
if
(!in_array(
$match
,
$temp
)){
$temp
[
$match
] =
$temp
[
$match
] + 1;
if
(
$temp
[
$match
] >=
$arr
[
$word
])
return
true;
}
}
return
false;
}
$file
=
'spam.txt'
;
$str
=
'This string has cat, dog word'
;
if
(is_spam(
$str
,
$file
))
echo
'this is spam'
;
else
echo
'this is not spam'
;
|
输出：
|
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|
ab:3
dog:3
cat:2
monkey:2
|
48、随机颜色生成器
|
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17
|
function
randomColor() {
$str
=
'#'
;
for
(
$i
= 0 ;
$i
< 6 ;
$i
++) {
$randNum
= rand(0 , 15);
switch
(
$randNum
) {
case
10:
$randNum
=
'A'
;
break
;
case
11:
$randNum
=
'B'
;
break
;
case
12:
$randNum
=
'C'
;
break
;
case
13:
$randNum
=
'D'
;
break
;
case
14:
$randNum
=
'E'
;
break
;
case
15:
$randNum
=
'F'
;
break
;
}
$str
.=
$randNum
;
}
return
$str
;
}
$color
= randomColor();
|
49、从网络下载文件
|
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|
set_time_limit(0);
// Supports all file types
// URL Here:
$url
=
'http://somsite.com/some_video.flv'
;
$pi
=
pathinfo
(
$url
);
$ext
=
$pi
[
'extension'
];
$name
=
$pi
[
'filename'
];
// create a new cURL resource
$ch
= curl_init();
// set URL and other appropriate options
curl_setopt(
$ch
, CURLOPT_URL,
$url
);
curl_setopt(
$ch
, CURLOPT_HEADER, false);
curl_setopt(
$ch
, CURLOPT_BINARYTRANSFER, true);
curl_setopt(
$ch
, CURLOPT_AUTOREFERER, true);
curl_setopt(
$ch
, CURLOPT_FOLLOWLOCATION, true);
curl_setopt(
$ch
, CURLOPT_RETURNTRANSFER, true);
// grab URL and pass it to the browser
$opt
= curl_exec(
$ch
);
// close cURL resource, and free up system resources
curl_close(
$ch
);
$saveFile
=
$name
.
'.'
.
$ext
;
if
(preg_match(
"/[^0-9a-z._-]/i"
,
$saveFile
))
$saveFile
= md5(microtime(true)).
'.'
.
$ext
;
$handle
=
fopen
(
$saveFile
,
'wb'
);
fwrite(
$handle
,
$opt
);
fclose(
$handle
);
|
50、Alexa/Google Page Rank
|
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38
39
40
|
function
page_rank(
$page
,
$type
=
'alexa'
){
switch
(
$type
){
case
'alexa'
:
$url
=
'http://alexa.com/siteinfo/'
;
$handle
=
fopen
(
$url
.
$page
,
'r'
);
break
;
case
'google'
:
$url
=
'http://google.com/search?client=navclient-auto&ch=6-1484155081&features=Rank&q=info:'
;
$handle
=
fopen
(
$url
.
'http://'
.
$page
,
'r'
);
break
;
}
$content
= stream_get_contents(
$handle
);
fclose(
$handle
);
$content
= preg_replace(
"~(n|t|ss+)~"
,
''
,
$content
);
switch
(
$type
){
case
'alexa'
:
if
(preg_match(
'~<div class="data (down|up)"><img.+?>(.+?) </div>~im'
,
$content
,
$matches
)){
return
$matches
[2];
}
else
{
return
FALSE;
}
break
;
case
'google'
:
$rank
=
explode
(
':'
,
$content
);
if
(
$rank
[2] !=
''
)
return
$rank
[2];
else
return
FALSE;
break
;
default
:
return
FALSE;
break
;
}
}
// Alexa Page Rank:
echo
'Alexa Rank: '
.page_rank(
'techug.com'
);
echo
'
';
// Google Page Rank
echo
'Google Rank: '
.page_rank(
'techug.com'
,
'google'
);
|
51、强制下载文件
|
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17
18
19
20
21
22
23
|
$filename
=
$_GET
[
'file'
];
//Get the fileid from the URL
// Query the file ID
$query
= sprintf(
"SELECT * FROM tableName WHERE id = '%s'"
,mysql_real_escape_string(
$filename
));
$sql
= mysql_query(
$query
);
if
(mysql_num_rows(
$sql
) > 0){
$row
= mysql_fetch_array(
$sql
);
// Set some headers
header(
"Pragma: public"
);
header(
"Expires: 0"
);
header(
"Cache-Control: must-revalidate, post-check=0, pre-check=0"
);
header(
"Content-Type: application/force-download"
);
header(
"Content-Type: application/octet-stream"
);
header(
"Content-Type: application/download"
);
header(
"Content-Disposition: attachment; filename="
.
basename
(
$row
[
'FileName'
]).
";"
);
header(
"Content-Transfer-Encoding: binary"
);
header(
"Content-Length: "
.
filesize
(
$row
[
'FileName'
]));
@readfile(
$row
[
'FileName'
]);
exit
(0);
}
else
{
header(
"Location: /"
);
exit
;
}
|
52、通过Email显示用户的Gravatar头像
|
1
2
|
$gravatar_link
=
'http://www.gravatar.com/avatar/'
. md5(
$comment_author_email
) .
'?s=32'
;
echo
'<lt;img src="'
.
$gravatar_link
.
'" />'
;
|
53、通过cURL获取RSS订阅数
|
1
2
3
4
5
6
7
|
$ch
= curl_init();
curl_setopt(
$ch
,CURLOPT_URL,
'https://feedburner.google.com/api/awareness/1.0/GetFeedData?id=7qkrmib4r9rscbplq5qgadiiq4'
);
curl_setopt(
$ch
,CURLOPT_RETURNTRANSFER,1);
curl_setopt(
$ch
,CURLOPT_CONNECTTIMEOUT,2);
$content
= curl_exec(
$ch
);
$subscribers
= get_match(
'/circulation="(.*)"/isU'
,
$content
);
curl_close(
$ch
);
|
54、时间差异计算函数
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
|
function
ago(
$time
)
{
$periods
=
array
(
"second"
,
"minute"
,
"hour"
,
"day"
,
"week"
,
"month"
,
"year"
,
"decade"
);
$lengths
=
array
(
"60"
,
"60"
,
"24"
,
"7"
,
"4.35"
,
"12"
,
"10"
);
$now
= time();
$difference
=
$now
-
$time
;
$tense
=
"ago"
;
for
(
$j
= 0;
$difference
>=
$lengths
[
$j
] &&
$j
<
count
(
$lengths
)-1;
$j
++) {
$difference
/=
$lengths
[
$j
];
}
$difference
=
round
(
$difference
);
if
(
$difference
!= 1) {
$periods
[
$j
].=
"s"
;
}
return
"$difference $periods[$j] 'ago' "
;
}
|
55、裁剪图片
|
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2
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5
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7
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9
10
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17
18
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20
|
$filename
=
"test.jpg"
;
list(
$w
,
$h
,
$type
,
$attr
) =
getimagesize
(
$filename
);
$src_im
= imagecreatefromjpeg(
$filename
);
$src_x
=
'0'
;
// begin x
$src_y
=
'0'
;
// begin y
$src_w
=
'100'
;
// width
$src_h
=
'100'
;
// height
$dst_x
=
'0'
;
// destination x
$dst_y
=
'0'
;
// destination y
$dst_im
= imagecreatetruecolor(
$src_w
,
$src_h
);
$white
= imagecolorallocate(
$dst_im
, 255, 255, 255);
imagefill(
$dst_im
, 0, 0,
$white
);
imagecopy(
$dst_im
,
$src_im
,
$dst_x
,
$dst_y
,
$src_x
,
$src_y
,
$src_w
,
$src_h
);
header(
"Content-type: image/png"
);
imagepng(
$dst_im
);
imagedestroy(
$dst_im
);
|
56、检查网站是否宕机
|
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2
3
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5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
function
Visit(
$url
){
$agent
=
"Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)"
;
$ch
=curl_init();
curl_setopt (
$ch
, CURLOPT_URL,
$url
);
curl_setopt(
$ch
, CURLOPT_USERAGENT,
$agent
);
curl_setopt (
$ch
, CURLOPT_RETURNTRANSFER, 1);
curl_setopt (
$ch
,CURLOPT_VERBOSE,false);
curl_setopt(
$ch
, CURLOPT_TIMEOUT, 5);
curl_setopt(
$ch
,CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt(
$ch
,CURLOPT_SSLVERSION,3);
curl_setopt(
$ch
,CURLOPT_SSL_VERIFYHOST, FALSE);
$page
=curl_exec(
$ch
);
//echo curl_error($ch);
$httpcode
= curl_getinfo(
$ch
, CURLINFO_HTTP_CODE);
curl_close(
$ch
);
if
(
$httpcode
>=200 &&
$httpcode
<300)
return
true;
else
return
false;
}
if
(Visit(
"http://www.google.com"
))
echo
"Website OK"
.
"n"
;
else
echo
"Website DOWN"
;
|