3v4l.org

run code in 300+ PHP versions simultaneously
<?php $buf = ' @abc{ ';preg_match('/(?P<token>[^\s]+)\s*/', $buf, $match, PREG_OFFSET_CAPTURE);print_r($match);
Output for 4.3.3 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [0] => Array ( [0] => @abc{ [1] => 5 ) [token] => Array ( [0] => @abc{ [1] => 5 ) [1] => Array ( [0] => @abc{ [1] => 5 ) )
Output for 4.3.0 - 4.3.2
Array ( [0] => Array ( [0] => @abc{ [1] => 5 ) [1] => Array ( [0] => @abc{ [1] => 5 ) )
preferences:
337.67 ms | 401 KiB | 459 Q