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Homephp教程php手册字符串截取函数开始

字符串截取函数开始

Jun 13, 2016 am 11:16 AM
functionstartstrfunctionstringstartintercept

字符串截取函数开始        function csubStr($str,$start,$len)
        {
                $strlen=strlen($str);
                $clen=0;
                for($i=0;$i                {
                        if ($clen>=$start+$len)
                        break;

                        if(ord(substr($str,$i,1))>0xa0)
                        {
                                if ($clen>=$start)
                                $tmpstr.=substr($str,$i,2);
                                $i++;
                        }
                        else
                        {
                                if ($clen>=$start)
                                $tmpstr.=substr($str,$i,1);
                        }
        }
       
        return $tmpstr;
        }
       
    //------------------------------字符串截取函数结束-------------------------------------------

/*使用方法:
$str=csubStr("ipod光环太耀眼 苹果的电脑本业该怎么办?",0,20);
echo $str;
?>       


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