fork download
copy 
  1. <?php
  2.  
  3. $test_array = array(
  4.     '',
  5.     'overfloW',
  6.     ' oveяfloW',
  7.     'oveяfloW ',
  8.     'oveя floW',
  9.     'oveя fl_oW',
  10.     ' oveя floW',
  11. );
  12.  
  13. $pattern = '/^[\p{L}0-9](?:[\p{L}0-9 ]*[\p{L}0-9])?$/u';
  14. foreach ($test_array as $t) {
  15.     echo "'$t' " , (
  16.         preg_match($pattern, $t)
  17.         ? 'matches'
  18.         : 'doesn\'t match'
  19.     ), ' the pattern' , PHP_EOL;
  20. }
Success #stdin #stdout 0.01s 20568KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
'' doesn't match the pattern
'overfloW' matches the pattern
' oveяfloW' doesn't match the pattern
'oveяfloW ' doesn't match the pattern
'oveя floW' matches the pattern
'oveя fl_oW' doesn't match the pattern
' oveя floW' doesn't match the pattern
https://ideone.com/BRAgV3
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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!