3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [ "-1" => "item 1", "1" => "item 2", "\0-1" => "item 3", ]; print_r($arr); var_dump($arr); foreach ($arr as $k => $v) { print bin2hex($k) ."\n"; }

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)
8.3.110.0090.00320.94
8.3.100.0100.00024.06
8.3.90.0040.00426.77
8.3.80.0030.00616.75
8.3.70.0070.00716.58
8.3.60.0110.00718.43
8.3.50.0120.00620.13
8.3.40.0040.01118.93
8.3.30.0120.00618.90
8.3.20.0070.00024.18
8.3.10.0060.00324.66
8.3.00.0080.00026.16
8.2.230.0080.00022.58
8.2.220.0030.00737.54
8.2.210.0080.00426.77
8.2.200.0060.00316.25
8.2.190.0130.00316.58
8.2.180.0110.00425.92
8.2.170.0110.00718.97
8.2.160.0140.00022.96
8.2.150.0070.00025.66
8.2.140.0000.00724.66
8.2.130.0040.00426.16
8.2.120.0090.00026.16
8.2.110.0060.00322.19
8.2.100.0110.00417.54
8.2.90.0000.00817.75
8.2.80.0000.00818.66
8.2.70.0040.00417.63
8.2.60.0000.00817.63
8.2.50.0040.00417.98
8.2.40.0040.00418.06
8.2.30.0070.00017.95
8.2.20.0040.00422.09
8.2.10.0040.00417.63
8.2.00.0030.00519.22
8.1.290.0090.00018.88
8.1.280.0140.00425.92
8.1.270.0040.00423.99
8.1.260.0020.00526.35
8.1.250.0040.00428.09
8.1.240.0040.00423.90
8.1.230.0120.00022.71
8.1.220.0030.00618.54
8.1.210.0050.00318.77
8.1.200.0040.00417.23
8.1.190.0000.00917.25
8.1.180.0090.00018.10
8.1.170.0000.00817.62
8.1.160.0030.00618.95
8.1.150.0000.01018.64
8.1.140.0070.00017.36
8.1.130.0000.00718.90
8.1.120.0030.00517.43
8.1.110.0000.00817.44
8.1.100.0030.00717.41
8.1.90.0070.00017.43
8.1.80.0080.00017.51
8.1.70.0040.00417.34
8.1.60.0050.00217.57
8.1.50.0030.00617.42
8.1.40.0020.00417.39
8.1.30.0080.00317.66
8.1.20.0140.00617.46
8.1.10.0170.00817.34
8.1.00.0240.00317.30
8.0.300.0000.00718.77
8.0.290.0040.00416.75
8.0.280.0030.00318.44
8.0.270.0040.00416.74
8.0.260.0030.00318.49
8.0.250.0040.00416.91
8.0.240.0040.00716.96
8.0.230.0060.00016.89
8.0.220.0070.00016.95
8.0.210.0040.00416.91
8.0.200.0000.00716.95
8.0.190.0040.00416.88
8.0.180.0000.00716.80
8.0.170.0000.00916.79
8.0.160.0130.01016.84
8.0.150.0220.00016.65
8.0.140.0280.00016.81
8.0.130.0170.00316.78
8.0.120.0150.00416.85
8.0.110.0120.00616.77
8.0.100.0180.00016.88
8.0.90.0150.00516.84
8.0.80.0160.00616.71
8.0.70.0170.00316.86
8.0.60.0150.00516.87
8.0.50.0150.00416.92
8.0.30.0160.00316.82
8.0.20.0140.00716.98
8.0.10.0100.01016.99
7.4.330.0050.00015.55
7.4.320.0000.00716.50
7.4.300.0060.00316.50
7.4.290.0000.00816.43
7.4.280.0090.00616.51
7.4.270.0140.00716.57
7.4.260.0210.00016.59
7.4.250.0120.00316.50
7.4.240.0140.00616.52
7.4.230.0210.00316.51
7.4.220.0120.00816.56
7.4.210.0130.00416.59
7.4.200.0150.00316.48
7.4.190.0090.00916.51
7.4.180.0110.00816.56
7.4.160.0140.00316.29
7.4.150.0130.00416.34
7.4.140.0120.00616.49
7.4.130.0040.00916.47
7.4.120.0140.00616.35
7.4.110.0060.00916.24
7.4.100.0150.00316.54
7.4.90.0140.00216.41
7.4.80.0150.00316.43
7.4.70.0180.00016.39
7.4.60.0060.00616.41
7.4.50.0130.00516.32
7.4.40.0150.00416.12
7.4.30.0080.00816.38
7.4.20.0150.00016.17
7.4.10.0130.00316.24
7.4.00.0080.00816.28

preferences:
36.46 ms | 403 KiB | 5 Q