3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = []; $b = []; // populate $a for ($i = 0;$i < 10000; $i++) { $a[$i] = ''; } // populate $b for ($i = 10000; $i < 20000; $i++) { $b[$i] = ''; } // intersection somewhere in the middle $intersect = rand(5000, 6000); $b[$intersect] = ''; $timer = microtime(); if (!empty(array_intersect_key($a, $b))) { var_dump('Method 1: INTERSECTION FOUND! Timer: ', microtime() - $timer); } $timer = microtime(); foreach ($a as $key => $val) { if (isset($b[$key])) { var_dump('Method 2: INTERSECTION FOUND! Timer: ', microtime() - $timer); break; } }

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
7.2.00.0000.01321.38
7.1.70.0100.00719.13
7.1.60.0070.02019.47
7.1.50.0070.01718.74
7.1.00.0070.07324.45
7.0.200.0940.01316.89
7.0.100.0070.09721.07
7.0.90.0530.04021.05
7.0.80.0100.03720.98
7.0.70.0000.05321.06
7.0.60.0300.08321.06
7.0.50.0070.05021.29
7.0.40.0070.04020.18
7.0.30.0030.04319.92
7.0.20.0000.04720.07
7.0.10.0100.05020.13
7.0.00.0000.05020.14
5.6.280.0070.07723.90
5.6.250.0100.09023.45
5.6.240.0030.04723.46
5.6.230.0070.04723.46
5.6.220.0130.04023.53
5.6.210.0130.04023.39
5.6.200.0030.05023.88
5.6.190.0130.03723.77
5.6.180.0030.04723.91
5.6.170.0100.04023.91
5.6.160.0030.04723.88
5.6.150.0070.04323.78
5.6.140.0070.04323.83
5.6.130.0030.04723.96
5.6.120.0070.04323.88
5.6.110.0030.04723.85
5.6.100.0030.04723.86
5.6.90.0130.03723.91
5.6.80.0100.03023.32
5.6.70.0100.03723.32
5.6.60.0030.07323.21
5.6.50.0030.05723.09
5.6.40.0100.06023.30
5.6.30.0100.07323.24
5.6.20.0100.05323.20
5.6.10.0170.07023.22
5.6.00.0100.08023.23
5.5.380.0100.06023.20
5.5.370.0070.05323.40
5.5.360.0070.05323.18
5.5.350.0070.04323.26
5.5.340.0100.08323.75
5.5.330.0070.04323.56
5.5.320.0030.04723.75
5.5.310.0070.04323.70
5.5.300.0070.04723.58
5.5.290.0070.04323.71
5.5.280.0070.03323.58
5.5.270.0070.04023.65
5.5.260.0030.05023.73
5.5.250.0030.04323.57
5.5.240.0070.04022.95
5.5.230.0000.04723.11
5.5.220.0070.04323.04
5.5.210.0070.06023.13
5.5.200.0030.04323.11
5.5.190.0030.09023.11
5.5.180.0170.06723.05
5.5.160.0200.08323.04
5.5.150.0170.07722.95
5.5.140.0070.08023.05
5.5.130.0130.06723.04
5.5.120.0030.08723.04
5.5.110.0030.07723.09
5.5.100.0130.07022.99
5.5.90.0030.04322.92
5.5.80.0070.08322.92
5.5.70.0130.07722.89
5.5.60.0100.06722.91
5.5.50.0100.08022.88
5.5.40.0070.06722.76
5.5.30.0200.07722.85
5.5.20.0130.08722.87
5.5.10.0170.04322.86
5.5.00.0100.07322.91

preferences:
53.02 ms | 829 KiB | 5 Q