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
$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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