本文实例讲述了smarty中改进truncate使其支持中文的方法。分享给大家供大家参考,具体如下:
smarty的truncate不支持中文的截取。将smarty目录下plugins中的modifier.truncate.php改成下面这个样子就可以了
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<?php
/*
* Smarty plugin
* -------------------------------------------------------------
* Type: modifier
* Name: truncate
* Purpose: Truncate a string to a certain length if necessary,
* optionally splitting in the middle of a word, and
* appending the $etc string.
* Update: change substr to msubstr and add fun msubstr.so it
* can bu used in chinese charset.
* -------------------------------------------------------------
*/
function smarty_modifier_truncate( $string , $length = 80, $etc = '...' , $break_words = false)
{
if ( $length == 0)
return '' ;
if ( strlen ( $string ) > $length ) {
$length -= strlen ( $etc );
if (! $break_words )
$string = preg_replace( '//s+?(/S+)?$/' , '' , SubstrGB( $string , 0, $length +1));
return SubstrGB( $string , 0, $length ). $etc ;
} else
return $string ;
}
function SubstrGB( $str , $start , $len ){
for ( $i =0; $i < $start + $len ; $i ++){
$tmpstr =(ord( $str [ $i ])>=161 && ord( $str [ $i ])<=254&& ord( $str [ $i +1])>=161 && ord( $str [ $i +1])<=254)? $str [ $i ]. $str [++ $i ]: $tmpstr = $str [ $i ];
if ( $i >= $start && $i <( $start + $len )) $tmp .= $tmpstr ;
}
return $tmp ;
}
/* vim: set expandtab: */
?>
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希望本文所述对大家基于smarty模板的PHP程序设计有所帮助。