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HomeBackend DevelopmentPHP ProblemDetailed explanation of trim() function in PHP

   Detailed explanation of trim() function in PHP

     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,&#39;s&#39;);
var_dump($str1);
?>
输出:string(14) "PHP.cn is good"

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