澳门新葡亰平台游戏网站取字符串,php 截取中文字符串

php对中文的支持不怎么好哦,特别在我一个字符串中有中文与英语时截取就是个问题了,处理不好就会出现乱码了,下面我们这截取中文字符串函数就很好的处理了这件事情。

function ssubstr($string, $length, $dot = ‘ …’) {
 global $charset;

  if(strlen($string) <= $length) {
   return $string;
  }
  $string = str_replace(array(‘&’, ‘"’, ‘<‘, ‘>’),
array(‘&’, ‘”‘, ‘<‘, ‘>’), $string);
  $strcut = ”;
  if(strtolower($charset) == ‘utf-8’) {
   $n = $tn = $noc = 0;
   while($n < strlen($string)) {
     $t = ord($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 += 2;
     } elseif (240 <= $t && $t <= 247) {
   $tn = 4; $n += 4; $noc += 2;
     } elseif (248 <= $t && $t <= 251) {
   $tn = 5; $n += 5; $noc += 2;
     } elseif ($t == 252 || $t == 253) {
   $tn = 6; $n += 6; $noc += 2;
     } else {
   $n++;
     }
     if($noc >= $length)
     {
   break;
     }
   }
    if($noc > $length)
    {
    $n -= $tn;
    }
   $strcut = substr($string, 0, $n);
  } else {
    for($i = 0; $i < $length; $i++)
    {
     $strcut .= ord($string[$i]) > 127 ?
$string[$i].$string[++$i] : $string[$i];
    }
  }
 $strcut = str_replace(array(‘&’, ‘”‘, ‘<‘, ‘>’),
array(‘&’, ‘"’, ‘<‘, ‘>’), $strcut);
 return $strcut.$dot;
}

 
截取一定长度的字符串(该函数对gb2312使用有效)
<?
function wordscut($string, $length ,$sss=0) {

if(strlen($string) > $length) {
               if($sss){
$length=$length – 3;
$addstr=@# …@#;

}
  for($i = 0; $i < $length; $i++) {
   if(ord($string[$i]) > 127) {
$wordscut .= $string[$i].$string[$i + 1]; //
$i++;
   } else {
$wordscut .= $string[$i];
   }
  }
  return $wordscut.$addstr;
}
return $string;
}
?>

在使用的时候,得先把要生成摘要的内容strip_tags()一下,当然,你也可以把strip_tags()直接添加到函数中,我没有搞,自己添加吧。下面是函数:
复制代码 代码如下:
function cutstr($string, $length,$charset,$dot)
{//字符,截取长度,字符集,结尾符
if(strlen($string) <= $length) {
return $string;
}
$pre = chr(1);
$end = chr(1);
//保护特殊字符串
$string = str_replace(array(‘&’, ‘”‘, ”), array($pre.’&’.$end,
$pre.'”‘.$end, $pre.”.$end), $string);
$strcut = ”;
if(strtolower($charset) == ‘utf-8’) {
$n = $tn = $noc = 0;
while($n < strlen($string)) {
$t = ord($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 += 2;
} elseif(240 <= $t && $t <= 247) {
$tn = 4; $n += 4; $noc += 2;
} elseif(248 <= $t && $t <= 251) {
$tn = 5; $n += 5; $noc += 2;
} elseif($t == 252 || $t == 253) {
$tn = 6; $n += 6; $noc += 2;
} else {
$n++;
}
if($noc >= $length) {
break;
}
}
if($noc > $length) {
$n -= $tn;
}
$strcut = substr($string, 0, $n);
} else {
for($i = 0; $i < $length; $i++) {
$strcut .= ord($string[$i]) > 127 ? $string[$i].$string[++$i] :
$string[$i];
}
}
//还原特殊字符串
$strcut = str_replace(array($pre.’&’.$end, $pre.'”‘.$end,
$pre.”.$end), array(‘&’, ‘”‘, ”), $strcut);
//修复出现特殊字符串截段的问题
$pos = strrpos($s, chr(1));
if($pos !== false) {
$strcut = substr($s,0,$pos);
}
return $strcut.$dot;
}

function MooCutstr($string, $length, $dot = ‘ …’) {global $charset;

if(strlen($string) = $length) {return $string;}$string =
str_replace(array(‘amp;’, ‘quot;’, ‘lt;’, ‘gt;’), array(”, ”, ”,
”), $string);$strcut = ”;if(strtolower($charset) == ‘utf-8’) {$n = $tn
= $noc = 0;while($n strlen($string)) {$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 += 2;} elseif (240 = $t $t = 247) {$tn = 4; $n
+= 4; $noc += 2;} elseif (248 = $t $t = 251) {$tn = 5; $n += 5; $noc +=
2;} elseif ($t == 252 || $t == 253) {$tn = 6; $n += 6; $noc += 2;} else
{$n++;}if($noc = $length) {break;}}if($noc $length) {$n -= $tn;}$strcut
= substr($string, 0, $n);} else {for($i = 0; $i $length; $i++) {$strcut
.= ord($string[$i]) 127 ? $string[$i].$string[++$i] :
$string[$i];}}$strcut = str_replace(array(”, ”, ”, ”),
array(‘amp;’, ‘quot;’, ‘lt;’, ‘gt;’), $strcut);

return $strcut.$dot;}

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