Online PHP editor | perf for EllKE

<?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', $output, 0), 'preg_grep' => preg_grep('/^[a-z]+/', [$output, 'x'], 0), 'preg_match' => preg_match('/^[a-z]+/', $output, $preg_match_matches, 0, 0), 'preg_match $matches' => $preg_match_matches, 'preg_match_all' => preg_match_all('/^[a-z]+/', $output, $preg_match_all_matches, 0, 0), 'preg_match_all $matches' => $preg_match_all_matches, 'preg_replace' => preg_replace('/[a-z]+/', 'X', $output, 0), 'preg_replace_callback' => preg_replace_callback('/[a-z]+/', function($word) { return $word; }, $output, 0), 'preg_replace_callback_array' => preg_replace_callback_array([ '~[a]+~i' => function ($match) { return 'X'; }, '~[b]+~i' => function ($match) { return 'Y'; } ], $output, 0, $preg_replace_callback_array_count, 0), 'preg_split' => preg_split('/\s/', $output, 0, PREG_SPLIT_NO_EMPTY), ]); ?>

Version	System time (s)	User time (s)	Memory (MiB)
8.5.2	0.010	0.009	20.38
8.5.1	0.011	0.008	16.71
8.5.0	0.004	0.005	18.65
8.4.17	0.014	0.008	23.96
8.4.16	0.014	0.009	23.27
8.4.15	0.011	0.011	21.74
8.4.14	0.047	0.006	17.45
8.4.9	0.013	0.007	17.84
8.3.30	0.013	0.010	19.18
8.3.29	0.013	0.008	20.87
8.3.28	0.013	0.009	18.56
8.3.27	0.010	0.009	16.86
8.3.18	0.012	0.010	18.70
8.3.5	0.013	0.005	18.61
8.2.30	0.010	0.011	18.26
8.1.34	0.013	0.007	17.82
8.1.0	0.023	0.009	17.35
8.0.0	0.026	0.011	17.08