fork(6) download
copy 
  1. <?php
  2.  
  3. 	$myString = 'My Terrific Game';
  4. 	$errorMessage = 'ERROR: Unallowed character';
  5.   	if (preg_match('/[^a-z0-9\s]/i', $myString)) { 
  6.   		echo $errorMessage;
  7.   	} else {
  8.   		echo 'Valid input';
  9.   	}
  10.  
  11. ?>
Success #stdin #stdout 0.02s 52472KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Valid input
https://ideone.com/r9XVcV
preg_match ALNUM http://stackoverflow.com/a/32880974/5290909
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!