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php簡單截取字符串代碼示例
本文實例講述了php簡單截取字符串的方法。分享給大家供大家參考，具體如下：
//截取摘要
public static function mbsubstr($str){
$strleng = mb_strlen($str,"utf8");
$mbstr = mb_substr($str,0,140,'utf8');
$strdstr = mb_substr($str,140,$strleng,'utf8');
$strlengs = mb_strlen($strdstr,'utf8');
$strc = "";
for($i=0;$i<$strlengs;$i++){
$strn = mb_substr($strdstr,$i,1,'utf8');
if($strn == "。" || $strn == "？" || $strn == "！"){
break;
}
$strc .= $strn;
}
$strd = $mbstr.$strc;
//echo $strleng."@".mb_strlen($strd,'utf8')."@".$strd."<br>";
return $strd;
}