Yii 截取字符串(UTF-8) 运用组件

Yii 截取字符串(UTF-8) 使用组件

1.将Helper.php放进protected\components文件夹下。

2.调用方法：

? Helper::truncate_utf8_string($content,20,false);?? //不显示省略号
? Helper::truncate_utf8_string($content,20);? //显示省略号?

?

<?phpclass Helper extends CController{        public static function truncate_utf8_string($string, $length, $etc = '...')        {            $result = '';            $string = html_entity_decode(trim(strip_tags($string)), ENT_QUOTES, 'UTF-8');            $strlen = strlen($string);            for ($i = 0; (($i < $strlen) && ($length > 0)); $i++)                {                if ($number = strpos(str_pad(decbin(ord(substr($string, $i, 1))), 8, '0', STR_PAD_LEFT), '0'))                        {                    if ($length < 1.0)                                {                        break;                    }                    $result .= substr($string, $i, $number);                    $length -= 1.0;                    $i += $number - 1;                }                        else                        {                    $result .= substr($string, $i, 1);                    $length -= 0.5;                }            }            $result = htmlspecialchars($result, ENT_QUOTES, 'UTF-8');            if ($i < $strlen)                {                        $result .= $etc;            }            return $result;        }}

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