æç»ä½ 个PHPæªåä¸æå符串çæ¹æ³æ»ç»ï¼æåçï¼ææºç ï¼ç¨åºä¸ï¼PHPæªåä¸æå符串æ¹æ³ç±äºç½ç«é¦é¡µä»¥åvTigerCRMéç»å¸¸å¨æªåä¸æå符串æ¶åºç°ä¹±ç (使ç¨substr)ï¼ä»å¤©æ¾å°ä¸ä¸ªæ¯è¾å¥½çæªåä¸æå符串æ¹æ³ï¼å¨æ¤ä¸å¤§å®¶å
±äº«ãfunction msubstr($str, $start, $len) {
$tmpstr = "";
$strlen = $start + $len;
for($i = 0; $i < $strlen; $i++) {
if(ord(substr($str, $i, 1)) > 0xa0) {
$tmpstr .= substr($str, $i, 2);
$i++;
} else
$tmpstr .= substr($str, $i, 1);
}
return $tmpstr;
}ç¨åºäºï¼PHPæªåUTF-8å符串ï¼è§£å³åå符é®é¢/******************************************************************
* PHPæªåUTF-8å符串ï¼è§£å³åå符é®é¢ã
* è±æãæ°åï¼åè§ï¼ä¸º1åèï¼8ä½ï¼ï¼ä¸æï¼å
¨è§ï¼ä¸º3åè
* @return ååºçå符串, å½$lenå°äºçäº0æ¶, ä¼è¿åæ´ä¸ªå符串
* @param $str æºå符串
* $len 左边çå串çé¿åº¦
****************************************************************/
function utf_substr($str,$len)
{
for($i=0;$i<$len;$i++)
{
$temp_str=substr($str,0,1);
if(ord($temp_str) > 127)
{
$i++;
if($i<$len)
{
$new_str[]=substr($str,0,3);
$str=substr($str,3);
}
}
else
{
$new_str[]=substr($str,0,1);
$str=substr($str,1);
}
}
return join($new_str);
}
?>php utf-8 å符串æªå<?
function cutstr($string, $length) {
preg_match_all("/[x01-x7f]|[xc2-xdf][x80-xbf]|xe0[xa0-xbf][x80-xbf]|[xe1-xef][x80-xbf][x80-xbf]|xf0[x90-xbf][x80-xbf][x80-xbf]|[xf1-xf7][x80-xbf][x80-xbf][x80-xbf]/", $string, $info);
for($i=0; $i<count($info[0]); $i++) {
$wordscut .= $info[0][$i];
$j = ord($info[0][$i]) > 127 ? $j + 2 : $j + 1;
if ($j > $length - 3) {
return $wordscut." ...";
}
}
return join('', $info[0]);
}
$string="242432å对ææ¯456ç¯å¾ä¸å¹¿æ³å¤§ä½¿é¦å°æ¹7890";
for($i=0;$i<strlen($string);$i++)
{
echo cutstr($string,$i)."<br>";
}
?>
æªåutf-8å符串å½æ°ä¸ºäºæ¯æå¤è¯è¨ï¼æ°æ®åºéçå符串å¯è½ä¿å为UTF-8ç¼ç ï¼å¨ç½ç«å¼åä¸å¯è½éè¦ç¨phpæªåå符串çä¸é¨åã为äºé¿å
åºç°ä¹±ç ç°è±¡ï¼ç¼åå¦ä¸çUTF-8å符串æªåå½æ°å
³äºutf-8çåç请ç UTF-8 FAQUTF-8ç¼ç çå符å¯è½ç±1~3个åèç»æï¼ å
·ä½æ°ç®å¯ä»¥ç±ç¬¬ä¸ä¸ªåèå¤æåºæ¥ã(ç论ä¸å¯è½æ´é¿ï¼ä½è¿éå设ä¸è¶
è¿3个åè)
第ä¸ä¸ªåè大äº224çï¼å®ä¸å®ä¹åç2个åèä¸èµ·ç»æä¸ä¸ªUTF-8å符
第ä¸ä¸ªåè大äº192å°äº224çï¼å®ä¸å®ä¹åç1个åèç»æä¸ä¸ªUTF-8å符
å¦å第ä¸ä¸ªåèæ¬èº«å°±æ¯ä¸ä¸ªè±æå符ï¼å
æ¬æ°ååä¸å°é¨åæ ç¹ç¬¦å·ï¼ã以å为æç½ç«è®¾è®¡ç代ç (ä¹æ¯ç°å¨ç¨å¨é¦é¡µçé¿åº¦æªåçå½æ°)
Code:
<?php // Cut_Str;
//$sourcestr æ¯è¦å¤ççå符串
//$cutlength 为æªåçé¿åº¦(å³åæ°)
function cut_str($sourcestr,$cutlength)
{
$returnstr='';
$i=0;
$n=0;
$str_length=strlen($sourcestr);//å符串çåèæ°
while (($n<$cutlength) and ($i<=$str_length))
{
$temp_str=substr($sourcestr,$i,1);
$ascnum=Ord($temp_str);//å¾å°å符串ä¸ç¬¬$iä½å符çasciiç
if ($ascnum>=224) //å¦æASCIIä½é«ä¸224ï¼
{
$returnstr=$returnstr.substr($sourcestr,$i,3); //æ ¹æ®UTF-8ç¼ç è§èï¼å°3个è¿ç»çå符计为å个å符
$i=$i+3; //å®é
Byte计为3
$n++; //å串é¿åº¦è®¡1
}
elseif ($ascnum>=192) //å¦æASCIIä½é«ä¸192ï¼
{
$returnstr=$returnstr.substr($sourcestr,$i,2); //æ ¹æ®UTF-8ç¼ç è§èï¼å°2个è¿ç»çå符计为å个å符
$i=$i+2; //å®é
Byte计为2
$n++; //å串é¿åº¦è®¡1
}
elseif ($ascnum>=65 && $ascnum<=90) //å¦ææ¯å¤§ååæ¯ï¼
{
$returnstr=$returnstr.substr($sourcestr,$i,1);
$i=$i+1; //å®é
çByteæ°ä»è®¡1个
$n++; //ä½èèæ´ä½ç¾è§ï¼å¤§ååæ¯è®¡æä¸ä¸ªé«ä½å符
}
else //å
¶ä»æ
åµä¸ï¼å
æ¬å°ååæ¯ååè§æ ç¹ç¬¦å·ï¼
{
$returnstr=$returnstr.substr($sourcestr,$i,1);
$i=$i+1; //å®é
çByteæ°è®¡1个
$n=$n+0.5; //å°ååæ¯ååè§æ ç¹çä¸å个é«ä½å符宽...
}
}
if ($str_length>$cutlength){
$returnstr = $returnstr . "...";//è¶
è¿é¿åº¦æ¶å¨å°¾å¤å ä¸çç¥å·
}
return $returnstr;}æªåutf-8å符串å½æ°function FSubstr($title,$start,$len="",$magic=true)
{
/**
* powered by Smartpig
* mailto:
[email protected]*/if($len == "") $len=strlen($title);
if($start != 0)
{
$startv = ord(substr($title,$start,1));
if($startv >= 128)
{
if($startv < 192)
{
for($i=$start-1;$i>0;$i--)
{
$tempv = ord(substr($title,$i,1));
if($tempv >= 192) break;
}
$start = $i;
}
}
}
if(strlen($title)<=$len) return substr($title,$start,$len);
$alen = 0;
$blen = 0;
$realnum = 0;
for($i=$start;$i<strlen($title);$i++)
{
$ctype = 0;
$cstep = 0;
$cur = substr($title,$i,1);
if($cur == "&")
{
if(substr($title,$i,4) == "<")
{
$cstep = 4;
$length += 4;
$i += 3;
$realnum ++;
if($magic)
{
$alen ++;
}
}
else if(substr($title,$i,4) == ">")
{
$cstep = 4;
$length += 4;
$i += 3;
$realnum ++;
if($magic)
{
$alen ++;
}
}
else if(substr($title,$i,5) == "&")
{
$cstep = 5;
$length += 5;
$i += 4;
$realnum ++;
if($magic)
{
$alen ++;
}
}
else if(substr($title,$i,6) == """)
{
$cstep = 6;
$length += 6;
$i += 5;
$realnum ++;
if($magic)
{
$alen ++;
}
}
else if(preg_match("/(d+);?/i",substr($title,$i,8),$match))
{
$cstep = strlen($match[0]);
$length += strlen($match[0]);
$i += strlen($match[0])-1;
$realnum ++;
if($magic)
{
$blen ++;
$ctype = 1;
}
}
}else{
if(ord($cur)>=252)
{
$cstep = 6;
$length += 6;
$i += 5;
$realnum ++;
if($magic)
{
$blen ++;
$ctype = 1;
}
}elseif(ord($cur)>=248){
$cstep = 5;
$length += 5;
$i += 4;
$realnum ++;
if($magic)
{
$ctype = 1;
$blen ++;
}
}elseif(ord($cur)>=240){
$cstep = 4;
$length += 4;
$i += 3;
$realnum ++;
if($magic)
{
$blen ++;
$ctype = 1;
}
}elseif(ord($cur)>=224){
$cstep = 3;
$length += 3;
$i += 2;
$realnum ++;
if($magic)
{
$ctype = 1;
$blen ++;
}
}elseif(ord($cur)>=192){
$cstep = 2;
$length += 2;
$i += 1;
$realnum ++;
if($magic)
{
$blen ++;
$ctype = 1;
}
}elseif(ord($cur)>=128){
$length += 1;
}else{
$cstep = 1;
$length +=1;
$realnum ++;
if($magic)
{
if(ord($cur) >= 65 && ord($cur) <= 90)
{
$blen++;
}else{
$alen++;
}
}
}
}
if($magic)
{
if(($blen*2+$alen) == ($len*2)) break;
if(($blen*2+$alen) == ($len*2+1))
{
if($ctype == 1)
{
$length -= $cstep;
break;
}else{
break;
}
}
}else{
if($realnum == $len) break;
}
}
unset($cur);
unset($alen);
unset($blen);
unset($realnum);
unset($ctype);
unset($cstep);
return substr($title,$start,$length);
}