php中如何截取中文字符串?
众所周知php原生函数substr是不支持截取中文字符串的。下面的代码提供了多种截取php中文字符串的方法。
1. 截取GB2312中文字符串
< ?php/** * @package BugFree * @version $Id: FunctionsMain.inc.php,v 1.32 2005/09/24 11:38:37 wwccss Exp $ * * * Return part of a string(Enhance the function substr()) * * @author Chunsheng Wang <wwccss@263.net> * @param string $String the string to cut. * @param int $Length the length of returned string. * @param booble $Append whether append "...": false|true * @return string the cutted string. */function sysSubStr($String,$Length,$Append = false){ if (strlen($String) < = $Length ) { return $String; } else { $I = 0; while ($I < $Length) { $StringTMP = substr($String,$I,1); if ( ord($StringTMP) >=224 ) { $StringTMP = substr($String,$I,3); $I = $I + 3; } elseif( ord($StringTMP) >=192 ) { $StringTMP = substr($String,$I,2); $I = $I + 2; } else { $I = $I + 1; } $StringLast[] = $StringTMP; } $StringLast = implode("",$StringLast); if($Append) { $StringLast .= "..."; } return $StringLast; }}$String = "17test.info 走在中国自动化测试的前沿";$Length = "18";$Append = false;echo sysSubStr($String,$Length,$Append);?>