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<?php echo preg_match( '@(\d+)@', '1-ะน', $m ).PHP_EOL; var_dump( $m );
Output for 4.3.10 - 4.4.9, 5.0.2 - 7.1.0
1 array(2) { [0]=> string(1) "1" [1]=> string(1) "1" }
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/8fP5C on line 3 1PHP_EOLarray(2) { [0]=> string(1) "1" [1]=> string(1) "1" }