- <?php
- /**
- * 检测输入中是否含有错误字符
- * @author ruxing.li
- * @param char $string 要检查的字符串名称
- * @return boolean
- */
- function is_badword($string) {
- $badwords = array("\\",'&',' ',"'",'"','/','*',',','<','>',"\r","\t","\n","#");
- foreach($badwords as $value){
- if(strpos($string, $value) !== false) {
- return true;
- }
- }
- return false;
- }
- /**
- * 检查用户名是否符合规定
- * @author ruxing.li
- * @param string $username 要检查的用户名
- * @return boolean
- */
- function is_username($username) {
- $strlen = strlen($username);
- if(is_badword($username) || !preg_match("/^[a-zA-Z0-9_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]+$/", $username)){
- return false;
- } elseif ( 20 < $strlen || $strlen < 2 ) {
- return false;
- }
- return true;
- }
- var_dump(is_username('ruxing.li')); //boolean false
- var_dump(is_username('ruxingli')); //boolean true
检查输入的用户名是否符合规定
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转载自blog.csdn.net/sunsineq/article/details/41923047
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