PHP str_replace 任何数字模式 [英] PHP str_replace any number pattern

问题描述

我有一个看起来很简单的查询.我在 PHP 中有以下代码:

I have what seems like quite a simple query. I have the following code in PHP:

$newThumb = str_replace('style="width:170px;"','',$nolinkThumb);

我遇到的问题是数字170"可以是任何数字，因此我希望我的 str_replace 能够反映这一点.我试过使用:

The problem that I have is that the number '170' can be any number therefore I would like my str_replace to reflect this. I have tried using:

$newThumb = str_replace('style="width:[0-9]px;"','',$nolinkThumb);

但这行不通.任何帮助将不胜感激.

But this doesn't work. Any help would be greatly appreciated.

谢谢

推荐答案

需要使用正则表达式，但是[0-9]在正则表达式中的意思是数字0到9重复一次".

You need to use regex, but [0-9] in regex means "the digits 0 to 9 repeated once".

您实际搜索的是 [0-9]+ ，意思是数字 0 到 9 重复一次或多次":

What you're actually searching for is [0-9]+ which means "the digits 0 to 9 repeated one or more times":

$string = preg_replace('/style="width:[0-9]+px;"/', '', $string);

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