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run code in 150+ php & hhvm versions
Bugs & Features
<?php $data = "Code: 2345 7543 126 DATA"; var_export(preg_match_all('/([\d]*)/', $data, $matches)); echo PHP_EOL; var_dump($matches);
Output for 4.3.10 - 4.4.9, 5.0.2 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
17 array(2) { [0]=> array(17) { [0]=> string(0) "" [1]=> string(0) "" [2]=> string(0) "" [3]=> string(0) "" [4]=> string(0) "" [5]=> string(0) "" [6]=> string(4) "2345" [7]=> string(0) "" [8]=> string(4) "7543" [9]=> string(0) "" [10]=> string(3) "126" [11]=> string(0) "" [12]=> string(0) "" [13]=> string(0) "" [14]=> string(0) "" [15]=> string(0) "" [16]=> string(0) "" } [1]=> array(17) { [0]=> string(0) "" [1]=> string(0) "" [2]=> string(0) "" [3]=> string(0) "" [4]=> string(0) "" [5]=> string(0) "" [6]=> string(4) "2345" [7]=> string(0) "" [8]=> string(4) "7543" [9]=> string(0) "" [10]=> string(3) "126" [11]=> string(0) "" [12]=> string(0) "" [13]=> string(0) "" [14]=> string(0) "" [15]=> string(0) "" [16]=> string(0) "" } }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
17 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/hWZPp on line 7 PHP_EOLarray(2) { [0]=> array(17) { [0]=> string(0) "" [1]=> string(0) "" [2]=> string(0) "" [3]=> string(0) "" [4]=> string(0) "" [5]=> string(0) "" [6]=> string(4) "2345" [7]=> string(0) "" [8]=> string(4) "7543" [9]=> string(0) "" [10]=> string(3) "126" [11]=> string(0) "" [12]=> string(0) "" [13]=> string(0) "" [14]=> string(0) "" [15]=> string(0) "" [16]=> string(0) "" } [1]=> array(17) { [0]=> string(0) "" [1]=> string(0) "" [2]=> string(0) "" [3]=> string(0) "" [4]=> string(0) "" [5]=> string(0) "" [6]=> string(4) "2345" [7]=> string(0) "" [8]=> string(4) "7543" [9]=> string(0) "" [10]=> string(3) "126" [11]=> string(0) "" [12]=> string(0) "" [13]=> string(0) "" [14]=> string(0) "" [15]=> string(0) "" [16]=> string(0) "" } }