Restricting an input field to only numbers with preg_match_all() (PHP)
This is a pretty easy way to restrict a field to only numbers.
The \D in the preg match is short for [^0-9], which will match all characters, except 0-9.
I’m new to the regex, so there might be a better way to do this. But this works for me.
I like to do all the validating [...]
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