3v4l.org

run code in 500+ PHP versions simultaneously
<?php declare(strict_types=1); $a = [null => 'c']; var_dump($a); print_r ($a[null]); print_r ($a['']);

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)
8.5.90.0090.00916.87
8.5.80.0110.00716.88
8.5.70.0100.00516.83
8.5.60.0050.00516.82
8.5.50.0110.00418.27
8.5.30.0070.01019.40
8.5.20.0100.00819.46
8.5.10.0110.00920.38
8.5.00.0140.00722.04
8.4.240.0120.00919.38
8.4.230.0060.00319.54
8.4.220.0060.00919.49
8.4.210.0060.00321.41
8.4.180.0130.00921.95
8.4.170.0130.00823.88
8.4.160.0080.01523.84
8.4.150.0090.00416.80
8.4.140.0140.00919.18
8.4.130.0110.00517.65
8.4.120.0090.00820.43
8.4.110.0100.01122.50
8.4.100.0120.00617.64
8.4.90.0130.00818.33
8.4.80.0080.00617.48
8.4.70.0060.00917.43
8.4.60.0110.00917.71
8.4.50.0110.00919.47
8.4.40.0150.00419.49
8.4.30.0130.00718.63
8.4.20.0090.00922.52
8.4.10.0080.00825.86
8.3.330.0130.00718.35
8.3.320.0130.00718.38
8.3.310.0090.01120.25
8.3.300.0140.00620.85
8.3.290.0080.01122.50
8.3.280.0100.01020.14
8.3.270.0150.00816.66
8.3.260.0120.00816.65
8.3.250.0050.00318.70
8.3.240.0090.00816.41
8.3.230.0080.01116.50
8.3.220.0120.00616.91
8.3.210.0140.00516.75
8.3.200.0090.00916.62
8.3.190.0120.00718.82
8.3.180.0110.00916.55
8.3.170.0120.00618.82
8.3.160.0070.01116.95
8.3.150.0110.00716.90
8.3.140.0080.00016.66
8.3.130.0040.00416.59
8.3.120.0100.00020.86
8.3.110.0060.00320.94
8.3.100.0050.00516.26
8.3.90.0050.00326.77
8.3.80.0030.00617.97
8.3.70.0210.00016.50
8.3.60.0060.00918.18
8.3.50.0090.00918.30
8.3.40.0160.00420.22
8.3.30.0090.00618.55
8.3.20.0050.00224.18
8.3.10.0040.00424.66
8.3.00.0060.00326.16
8.2.320.0120.00717.94
8.2.310.0110.00817.94
8.2.300.0120.00722.26
8.2.290.0110.00620.35
8.2.280.0110.01016.41
8.2.270.0050.00316.69
8.2.260.0070.01118.70
8.2.250.0000.00918.40
8.2.240.0000.00818.95
8.2.230.0080.00022.58
8.2.220.0000.00924.06
8.2.210.0060.00326.77
8.2.200.0100.00016.38
8.2.190.0070.01416.58
8.2.180.0090.00916.63
8.2.170.0040.01118.83
8.2.160.0070.01022.96
8.2.150.0040.00425.66
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0000.00826.16
8.2.110.0040.00422.29
8.2.100.0090.00018.77
8.2.10.0100.00417.56
8.1.340.0140.00617.48
8.1.330.0110.00722.00
8.1.320.0060.00418.09
8.1.310.0100.00016.90
8.1.300.0060.00316.28
8.1.290.0060.00330.84
8.1.280.0140.00425.92
8.1.270.0000.00824.66
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0070.00318.50
8.1.230.0030.00618.62

preferences:
96.85 ms | 894 KiB | 5 Q