3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = ['a' => 1, 'b' => 2]; foreach($array as $a) { var_dump(key($array)); }

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)
8.3.60.0080.00818.30
8.3.50.0090.00918.18
8.3.40.0150.00718.55
8.3.30.0090.00618.37
8.3.20.0080.00019.03
8.3.10.0070.00021.96
8.3.00.0040.00420.80
8.2.180.0150.00018.04
8.2.170.0120.00322.96
8.2.160.0030.01022.17
8.2.150.0090.00024.18
8.2.140.0030.00624.66
8.2.130.0030.00618.09
8.2.120.0040.00426.35
8.2.110.0100.01319.39
8.2.100.0040.00717.78
8.2.90.0040.00417.63
8.2.80.0080.00018.66
8.2.70.0050.00317.50
8.2.60.0050.00518.03
8.2.50.0000.00818.10
8.2.40.0050.00322.15
8.2.30.0040.00419.17
8.2.20.0000.00818.11
8.2.10.0000.00718.04
8.2.00.0030.00518.12
8.1.270.0030.00522.06
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0030.00721.02
8.1.230.0060.00617.70
8.1.220.0040.00417.79
8.1.210.0080.00018.77
8.1.200.0040.00417.23
8.1.190.0030.00717.23
8.1.180.0030.00618.10
8.1.170.0030.00518.45
8.1.160.0050.00318.89
8.1.150.0030.00518.91
8.1.140.0070.00022.04
8.1.130.0040.00417.44
8.1.120.0030.00617.52
8.1.110.0000.00817.46
8.1.100.0000.00817.48
8.1.90.0040.00417.34
8.1.80.0030.00517.29
8.1.70.0070.00017.36
8.1.60.0030.00617.60
8.1.50.0070.00317.43
8.1.40.0000.00817.55
8.1.30.0000.00917.54
8.1.20.0040.00417.54
8.1.10.0040.00417.46
8.1.00.0050.00317.38
8.0.300.0050.00318.78
8.0.290.0080.00016.63
8.0.280.0000.00718.50
8.0.270.0000.00716.80
8.0.260.0030.00316.71
8.0.250.0000.00716.92
8.0.240.0040.00416.83
8.0.230.0070.00016.98
8.0.220.0030.00316.77
8.0.210.0000.00716.79
8.0.200.0000.00616.81
8.0.190.0030.00516.80
8.0.180.0000.00816.83
8.0.170.0040.00416.91
8.0.160.0040.00416.89
8.0.150.0040.00416.78
8.0.140.0000.00716.88
8.0.130.0000.00613.32
8.0.120.0040.00416.81
8.0.110.0070.00016.87
8.0.100.0040.00416.75
8.0.90.0030.00316.93
8.0.80.0080.00816.85
8.0.70.0020.00516.89
8.0.60.0000.00716.71
8.0.50.0050.00316.76
8.0.30.0050.01917.05
8.0.20.0070.01117.40
8.0.10.0000.00716.89
8.0.00.0130.01116.80
7.4.330.0020.00215.55
7.4.320.0000.00616.49
7.4.300.0000.00716.39
7.4.290.0030.00316.40
7.4.280.0000.01016.54
7.4.270.0000.00816.51
7.4.260.0000.00716.50
7.4.250.0040.00416.48
7.4.240.0050.00216.54
7.4.230.0030.00316.56
7.4.220.0050.00216.40
7.4.210.0070.00716.52
7.4.200.0040.00416.42
7.4.160.0090.00916.44
7.4.140.0120.00717.86
7.4.130.0060.01216.58
7.4.120.0110.00916.50
7.4.110.0210.00316.48
7.4.100.0070.01516.49
7.4.90.0070.01016.46
7.4.80.0060.01619.39
7.4.70.0110.00616.43
7.4.60.0100.00616.53
7.4.50.0070.01116.51
7.4.40.0100.01016.41
7.4.00.0040.01214.68
7.3.330.0050.00013.09
7.3.320.0030.00313.18
7.3.310.0040.00416.33
7.3.300.0030.00316.29
7.3.290.0000.00716.17
7.3.280.0070.01316.31
7.3.260.0120.00816.42
7.3.240.0130.00416.44
7.3.230.0120.00916.29
7.3.210.0000.01616.32
7.3.200.0100.00716.59
7.3.190.0110.00616.53
7.3.180.0130.00816.20
7.3.170.0130.00916.49
7.3.160.0100.01216.38
7.3.10.0050.00916.58
7.3.00.0070.00716.41
7.2.330.0130.00316.48
7.2.320.0060.00916.56
7.2.310.0050.01116.42
7.2.300.0100.00716.66
7.2.290.0030.01316.58
7.2.130.0040.00416.93
7.2.120.0240.00916.09
7.2.110.0230.00715.98
7.2.100.0170.00915.99
7.2.90.0210.00716.10
7.2.80.0220.00815.98
7.2.70.0410.00516.17
7.2.60.0290.00616.21
7.2.50.0260.00716.20
7.2.40.0420.00716.06
7.2.30.0420.00616.01
7.2.20.0300.00816.10
7.2.10.0240.00716.07
7.2.00.0210.01216.14
7.1.250.0050.00615.61
7.1.240.0370.00713.99
7.1.230.0620.01014.05
7.1.220.0540.00313.92
7.1.210.0510.00313.88
7.1.200.0490.00313.95
7.1.190.1480.01014.04
7.1.180.0960.00413.74
7.1.170.0900.01013.94
7.1.160.1230.00313.92
7.1.150.0860.01313.71
7.1.140.0610.00613.84
7.1.130.0580.00713.77
7.1.120.0600.00413.74
7.1.110.0760.01313.65
7.1.100.0560.00313.97
7.1.90.0700.00614.03
7.1.80.0530.00713.77
7.1.70.0630.00613.46
7.1.60.0630.00613.81
7.1.50.1090.00613.95
7.1.40.0620.01213.79
7.1.30.1290.01313.77
7.1.20.1130.01613.94
7.1.10.0740.00613.74
7.1.00.0810.01313.92
5.6.380.0000.01614.28

preferences:
56.9 ms | 400 KiB | 5 Q