stripping out all characters from a string, leaving numbers

user_164230 0
Viewed 35876

Hay, i have a string like this:

v8gn5.8gnr4nggb58gng.g95h58g.n48fn49t.t8t8t57

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

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

thanks

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

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

user_83620 
preg_replace('/[^0-9.]/', '', $string);
Ionut_G_Stan_588080 
$input = 'some str1ng 234';
$newString = preg_replace("/[^0-9.]/", '', $input);
user_1795420

To satisfy my curiosity I asked about the speed of the proposed answers and as shown in preg_replace speed optimisation/ it is (much) faster to use str_replace() than preg_replace().

So you might want to use str_replace() instead.

user_2462630
Related