兩款php 截取字串函數

代碼如下

複製代碼

<?php header ( "content-type:text/html; charset=utf-8" );     function strcut($string, $length, $dot = '...',$charset='utf-8')         {       $strlen = strlen($string);       if($strlen <= $length) return $string;       $strcut = '';       if(strtolower($charset) == 'utf-8')       {       $n = $tn = $noc = 0;       while($n < $strlen)       {       $t = ord($string[$n]);       if($t == 9 || $t == 10 || (32 <= $t && $t <= 126)) {       $tn = 1; $n++; $noc++;       } elseif(194 <= $t && $t <= 223) {       $tn = 2; $n += 2; $noc += 2;       } elseif(224 <= $t && $t <= 239) {       $tn = 3; $n += 3; $noc += 3;       } elseif(240 <= $t && $t <= 247) {       $tn = 4; $n += 4; $noc += 4;       } elseif(248 <= $t && $t <= 251) {       $tn = 5; $n += 5; $noc += 5;       } elseif($t == 252 || $t == 253)       {         $tn = 6; $n += 6; $noc += 6;       }       else       {       $n++;       }       if($noc >= $length) break;       }       if($noc > $length) $n -= $tn;       $strcut = substr($string, 0, $n);       }       else       {         $dotlen = strlen($dot);         $maxi = $length - $dotlen - 1;         for($i = 0; $i < $maxi; $i++)         {           $strcut .= ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i];         }       }       var_dump($strcut);       return $strcut;         }         echo "jjjkkklll";         echo strcut("向kk向向向kk向向向kk向向kkklllllllllllmmmmmmmmmmmmmmm向東陽",12)

字元截取函數二

代碼如下

複製代碼

function splitstr($str,$len){     if($len<=0){   return false;     }     else{   $slen=strlen($str);   if($len>=$slen)       return $str;   else{       for($i=0;$i<($len-1);$i++){     if(ord(substr($str,$i,1))>0xa0)   $i++;       }       if($i>=$len)     return substr($str,0,$len); elseif(ord(substr($str,$i,1))>0xa0)     return substr($str,0,$len-1);       else     return substr($str,0,$len);   }     } }