Online PHP editor | perf for dLJSU

<?php $output = "a b\tc"; $preg_match_matches = NULL; $preg_match_all_matches = NULL; $preg_replace_callback_array_count = NULL; var_dump([ 'preg_filter' => preg_filter('/[a-z]+/', 'X', $output, NULL), 'preg_grep' => preg_grep('/^[a-z]+/', [$output, 'x'], NULL), 'preg_match' => preg_match('/^[a-z]+/', $output, $preg_match_matches, NULL, NULL), 'preg_match $matches' => $preg_match_matches, 'preg_match_all' => preg_match_all('/^[a-z]+/', $output, $preg_match_all_matches, NULL, NULL), 'preg_match_all $matches' => $preg_match_all_matches, 'preg_replace' => preg_replace('/[a-z]+/', 'X', $output, NULL), 'preg_replace_callback' => preg_replace_callback('/[a-z]+/', function($word) { return $word; }, $output, NULL), 'preg_replace_callback_array' => preg_replace_callback_array([ '~[a]+~i' => function ($match) { return 'X'; }, '~[b]+~i' => function ($match) { return 'Y'; }, ], $output, NULL, $preg_replace_callback_array_count, NULL), 'preg_split' => preg_split('/\s/', $output, NULL, PREG_SPLIT_NO_EMPTY), ]); ?>

Version	System time (s)	User time (s)	Memory (MiB)
8.5.0	0.013	0.008	22.89
8.4.15	0.008	0.005	16.99
8.4.14	0.009	0.011	17.50
8.4.13	0.009	0.012	17.85
8.4.9	0.012	0.008	18.13
8.3.28	0.008	0.004	16.31
8.3.27	0.010	0.009	16.80
8.3.26	0.009	0.010	16.91
8.3.18	0.011	0.007	17.01
8.3.5	0.016	0.004	16.84
7.4.33	0.025	0.011	16.52
7.3.0	0.015	0.008	16.38