怎么在cakephp中截取中文字符串

truncate
truncate(string $text, int $length=100, array $options)
Cuts a string to the $length and adds a suffix with ‘ending’ if the text is longer than $length. If ‘exact’ is passed as false, the truncation will occur after the next word ending. If ‘html’ is passed as true, html tags will be respected and will not be cut off.

Text->truncate方法有3个参数:

• $text：需要截取的字符串
• $length：需要截取的长度，默认是截取100个字符
• $options：数组参数。ending表示在截取后的字符串结尾加上ending字符串；exact如果是false的话则不会截断word；html如果是true的话则不会截断html tag

下面的代码演示了如何使用tuncate方法：

echo $this->Text->truncate(
    'The killer crept forward and tripped on the rug.',
    22,
    array(
        'ending' => '...',
        'exact' => false
    )
);

上面的代码将输出The killer crept…
注意：如果是截取中文字符串的话exact最好置为true，否则汉语字符将无法被截断