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run code in 300+ PHP versions simultaneously
<?php $count = 0; for ( $match1 = 0; $match1 < 3; $match1++ ) for ( $match2 = 0; $match2 < 3; $match2++ ) for ( $match3 = 0; $match3 < 3; $match3++ ) for ( $match4 = 0; $match4 < 3; $match4++ ) for ( $match5 = 0; $match5 < 3; $match5++ ) for ( $match6 = 0; $match6 < 3; $match6++ ) for ( $match7 = 0; $match7 < 3; $match7++ ) for ( $match8 = 0; $match8 < 3; $match8++ ) for ( $match9 = 0; $match9 < 3; $match9++ ) for ( $match10 = 0; $match10 < 3; $match10++ ) for ( $match11 = 0; $match11 < 3; $match11++ ) for ( $match12 = 0; $match12 < 3; $match12++ ) for ( $match13 = 0; $match13 < 3; $match13++ ) for ( $match14 = 0; $match14 < 3; $match14++ ) for ( $match15 = 0; $match15 < 3; $match15++ ) { $column = join(array($match1, $match2, $match3, $match4, $match5, $match6, $match7, $match8, $match9, $match10, $match11, $match12, $match13, $match14, $match15)); preg_match_all('/[101]+/', $column, $matches); if ( count($matches[0]) > 0 ) $count++; } echo $count; ?>
Output for 4.3.0 - 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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4

Process exited with code 137.

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184.77 ms | 405 KiB | 307 Q