Extract numbers from a string in PHP with Regex

Question

I try to get numbers only from a string by using preg_replace.

From this string:

\n
                \t\n
                        \n
                                4 290 &euro;\n
                                \n
                            \n
                        \n
                    \n

I've tried following patterns:

(.*|\n)(\d+[[:blank:]]\d+)(.+|\n)
preg_replace('/(.*|\n)(\d+[[:blank:]]\d+)(.+|\n)/', '$2', $string);
preg_replace('/(\d+ \d+)/', '$1', $string);

I want to ouput 4290. None of the code above worked for me.

thanks for tips

bobble bubble · Accepted Answer · 2017-05-14 10:43:28Z

7

Try this:

$only_digits = preg_replace('/\D+/', '', $string);

Upper \D - the opposite of \d - matches non-digits.

Demo (regex101)

edited May 14, 2017 at 10:43

bobble bubble

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answered May 13, 2017 at 23:33

Jeppsen

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