从字符串中删除所有字符，留下数字

2022-01-17 00:00:00 numbers php

嘿，我有一个这样的字符串:

Hay, i have a string like this:

v8gn5.8gnr4nggb58gng.g95h58g.n48fn49t.t8t8t57

我想去掉所有字符，只留下数字(和 .s)

I want to strip out all the characters leaving just numbers (and .s)

任何想法如何做到这一点?有预建的功能吗?

Any ideas how to do this? Is there a function prebuilt?

谢谢

推荐答案

$str = preg_replace('/[^0-9.]+/', '', $str);

替换不包含数字或的子字符串.一无所有.

replace substrings that do not consist of digits or . with nothing.

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