php smarty truncate UTF8亂碼問(wèn)題解決辦法

2020-03-24 16:08:14

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估計(jì)不少玩smarty模板的小朋友都遇到過(guò)裁切亂碼問(wèn)題。特別是UTF8編碼的。以下代碼保存為modifier.truncate2.php 存到smarty libs下的plugin目錄下然后裁剪的時(shí)候用$v- content|truncate2:100就搞定了。如果不好用可能是緩存導(dǎo)致，請(qǐng)速度刪除templates_c下的緩存文件（小編搞的時(shí)候遇到緩存問(wèn)題。）
復(fù)制代碼代碼如下:
?php
/**
* Smarty plugin
* @package Smarty
* @subpackage plugins
*/

/**
* Smarty truncate modifier plugin
*
* Type: modifier br
* Name: truncate br
* Purpose: Truncate a string to a certain length if necessary,
* optionally splitting in the middle of a word, and
* appending the $etc string or inserting $etc into the middle.
* @link http://smarty.php.net/manual/en/language.modifier.truncate.php
* truncate (Smarty online manual)
* @author Monte Ohrt monte at ohrt dot com
* @param string
* @param integer
* @param string
* @param boolean
* @param boolean
* @return string
*/
function smarty_modifier_truncate2( $string,$length = 80,$etc='...',$count_words = true ) {
return $returnstr =substr_utf8($string, 0, $length).$etc;

}

function substr_utf8($str, $start=0, $length=-1, $return_ary=false) {
$len = strlen($str);if ($length == -1) $length = $len;
$r = array();
$n = 0;
$m = 0;

for($i = 0; $i $len; $i++) {
$x = substr($str, $i, 1);
$a = base_convert(ord($x), 10, 2);
$a = substr('00000000'.$a, -8);
if ($n $start) {
if (substr($a, 0, 1) == 0) {
}elseif (substr($a, 0, 3) == 110) {
$i += 1;
}elseif (substr($a, 0, 4) == 1110) {
$i += 2;
}
$n++;
}else {
if (substr($a, 0, 1) == 0) {
$r[] = substr($str, $i, 1);
}elseif (substr($a, 0, 3) == 110) {
$r[] = substr($str, $i, 2);
$i += 1;
}elseif (substr($a, 0, 4) == 1110) {
$r[] = substr($str, $i, 3);
$i += 2;
}else {
$r[] = '';
}
if (++$m = $length) {
break;
}
}
}

return $return_ary ? $r : implode("",$r);
}
/* vim: set expandtab: */
?
samrty的插件體系還是比較智能而且容易修改的。PHP教程

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