How can I make Preg_match() accept alphanumeric string with a space?

Asked May 27 '22 at 15:37

Active May 27 '22 at 15:39

Viewed 19 times

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I am trying to capture the full name of users from one input field. I am trying to set up my code such that the input field should only accept alphanumeric characters.

I found this regex on the internet that I thought was gonna help but it's not working.

if(preg_match('/^[a-zA-Z0-9]+$/'){}

The regex only accepts the input when I write one word. Seems there is something wrong with accepting the second word due to the space between them.

How can I make the regex to accepts spaces and return true when I type more than two words?

Any help will be highly appreciated.

edited May 27 '22 at 15:39

The fourth bird

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asked May 27 '22 at 15:37

philip nyankena

Add `\s` into the square brackets to allow spaces. – Barmar May 27 '22 at 15:40
Put spaces in the character class as well. `a-zA-Z0-9 ]`, put `\h` if you want horizontal spaces, or `\s` for any type of white space. – user3783243 May 27 '22 at 15:40
BTW, you said you only want to accept alphanumeric characters. Space isn't alphanumeric. – Barmar May 27 '22 at 15:40
@Barmar did you mean like this: if(preg_match('/^[a-zA-Z0-9\s]+$/'){} – philip nyankena May 27 '22 at 15:41
1

Why isn't this obvious? You're explicitly listing all the characters you want to allow. So add this to the list. – Barmar May 27 '22 at 15:41
Yes, that's exactly what I wrote. – Barmar May 27 '22 at 15:42
Also could do without regex, `ctype_alnum(str_replace(' ', '', $string))` – user3783243 May 27 '22 at 15:42

How can I make Preg_match() accept alphanumeric string with a space?

0 Answers0