在对表单中的文本框中获取的字符串中,可能含有空格字符或者其他字符串,那么如何将这些我们所不需要的字符串进行去除,我们可以使用trim()
函数来解决这个问题,本文就带大家一起来看一看。首先我们来看一看trim()
函数的语法:
trim ( string $str , string $character_mask = " \t\n\r\0\x0B" )
$str:待处理的字符串
$character_mask:需要删除的字符串,可选,默认值为" \t\n\r\0\x0B"
返回值:返回一个删除处理后的字符串。
代码实例:
1.只有待处理的字符串
<?php $str=" \tphp.cn better \n"; $str1=trim($str); echo $str1."<br>"; var_dump($str1); ?>
输出:php.cn better string(13) "php.cn better"
2.指定待处理字符串
<?php $str="PHP.cn is goods"; $str1=trim($str,'s'); var_dump($str1); ?>
输出:string(14) "PHP.cn is good"
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