thinkphp character related operations

【Foreword】

   This article summarizes the operations related to characters in tp

 

【main body】

(1) Limit the length of the output display and intercept the first few characters of the display

        Here it shows 0 to 10 characters, ### means itself

{$vol.content|msubstr=###,0,10}

   For example: when the characters in the database are too long, the output will be limited to 10. behind is...

(2) Remove the first few characters

        How can php strip the first three characters without knowing how long the string is?

$string='string';
$subject=substr_replace(string,'',0,3);

 

 

 

 

 

 

【Summarize】

Finally, the functions for modifying the encapsulated string to intercept and remove spaces are attached.

 

Put it under Common/Common/function.php

<?php
/**
 * @desc thinkphp custom function library...
 *
 */
// 1. msubstr string interception;
// 2. Send a get request through curl ---- these two requests support the HTTP protocol and also support the https protocol
// 3. Send post request via curl---
// 4. Remove spaces

/**  
 *String interception function
 * Enable mbstring extension
 */
function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true){
    if(mb_strlen($str,$charset)>$length)
    {
        if(function_exists("mb_substr")){
            if($suffix)
                return mb_substr($str, $start, $length, $charset)."...";
            else
                return mb_substr($str, $start, $length, $charset);
        }elseif(function_exists('iconv_substr')) {
            if($suffix)
                return iconv_substr($str,$start,$length,$charset)."...";
            else
                return iconv_substr($str,$start,$length,$charset);
        }
        $re['utf-8'] = "/[x01-x7f]|[xc2-xdf][x80-xbf]|[xe0-xef][x80-xbf]{2}|[xf0-xff][x80-xbf]{3}/";
        $re['gb2312'] = "/[x01-x7f]|[xb0-xf7][xa0-xfe]/";
        $re['gbk'] = "/[x01-x7f]|[x81-xfe][x40-xfe]/";
        $re['big5'] = "/[x01-x7f]|[x81-xfe]([x40-x7e]|xa1-xfe])/";
        preg_match_all($re[$charset], $str, $match);
        $slice = join("",array_slice($match[0], $start, $length));
        if($suffix) return $slice."…";
        return $slice;
    }
    else
    {
        return $str;
    }
}

/**
 * GET request
 * requires curl extension support
 */
function http_get($url){
    $oCurl = curl_init();
    if(stripos($url,"https://")!==FALSE){
        curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($oCurl, CURLOPT_SSLVERSION, 1);
    }
    curl_setopt($oCurl, CURLOPT_URL, $url);
    curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1 );
    $sContent = curl_exec($oCurl);
    $aStatus = curl_getinfo($oCurl);
    curl_close($oCurl);
    if(intval($aStatus["http_code"])==200){
        return $sContent;
    }else{
        return false;
    }
}

/**
 * POST request
 * requires curl extension support
 */
function http_post($url,$param,$post_file=false){
    $oCurl = curl_init();
    if(stripos($url,"https://") !== FALSE){
        curl_setopt($oCurl,CURLOPT_SSL_VERIFYPEER,FALSE);
        curl_setopt($oCurl,CURLOPT_SSL_VERIFYHOST,false);
        curl_setopt($oCurl,CURLOPT_SSLVERSION,1);
    }
    if (is_string($param) || $post_file){
        $strPOST = $param;
    } else {
        $aPOST = array();
        foreach($param as $key => $val){
            $aPOST[] = $key."=" . urlencode($val);
        }
        $strPOST = join("&",$aPOST);
    }
    curl_setopt($oCurl,CURLOPT_URL,$url);
    curl_setopt($oCurl,CURLOPT_RETURNTRANSFER,1);
    curl_setopt($oCurl,CURLOPT_POST,true);
    curl_setopt($oCurl,CURLOPT_POSTFIELDS,$strPOST);
    $sContent = curl_exec($oCurl);
    $aStatus = curl_getinfo($oCurl);
    curl_close($oCurl);
    if(intval($aStatus["http_code"]) == 200){
        return $sContent;
    }else{
        return false;
    }
}

/**
 * whitespace newline filter
 */
function trimAll($parma){
    if(is_array($parma)){
        return array_map('trimAll',$parma);
    }
    $before = array(" ","   ","\t","\r","\n");
    $after = array('','','','','');
    return str_replace($before,$after,$parma);
}

// Comments show replacement emoji tags
function reFace ($ str) {
    for($i=1;$i<76;$i++){
        $str = str_replace("[em_$i]","<img src='/Public/Face/$i.gif'/>",$str);
    }
    return $str;
}

 

 

 

 

 

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