如何使用PHP删除文本字段上的特殊字符和空格 [英] How to I remove special characters and spaces on a textfield using PHP

问题描述

我需要删除我正在构建的表单的文本字段上的所有特殊字符和空格.如何在PHP中完成此操作.

I need to remove all special characters and spaces on a textfield for a form I'm building. How do I accomplish this in PHP.

推荐答案

这真的取决于我是否假设您正在使用$ _POST []数据并希望清理这些输入?如果是这样，我肯定会做类似的事情:

This really depends, I assume you are working with $_POST[] data and wish to sanitize those inputs? If so I would definitely do something like:

$var = preg_replace("/[^A-Za-z0-9]/", "", $var);

这将去除除alpha/num之外的所有内容，您可以根据需要调整正则表达式以包含其他字符.可以在以下位置找到一些常用正则表达式的出色示例: RegEx库

That will strip out everything other than alpha/num, you can adjust the regex to include other characters if you wish. Some great examples of commonly used regular expressions can be found at: The RegEx Library

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