CodeIgniter的Text Helper有一个ellipsize()方法,用来过滤HTML标签并且截断文字十分好用。但是它对中文支持的特别不好,在中文中使用就有乱码出现。
下面有网友将function ellipsize()进行了修改,使得它支持中文:
在CI 2.1.3版本中,修改ci_2.1.3\system\helpers\text_helper.php 文件
$str, $max_length, $position = 1, $ellipsis = '…')
{
// Strip tags
$str = trim(strip_tags($str));
// Is the string long enough to ellipsize?
if (mb_strlen($str, $codepage) {
return $str;
}
$beg = mb_substr($str, 0, floor($max_length * $position), $codepage);
$position = ($position > 1) ? 1 : $position;
if ($position === 1)
{
$end = mb_substr($str, 0,
-($max_length - mb_strlen($beg, $codepage)), $codepage);
}
else
{
$end = mb_substr($str,
-($max_length - mb_strlen($beg, $codepage)), $max_length, $codepage);
}
return $beg.$ellipsis.$end;
}
这段代码主要将substr和strlen替换成了mb_substr和mb_strlen,这样就能很好的支持中文截断了。

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