3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array( 'string key' => 'aaa', '1234567890' => 'bbb' ); var_dump(array_keys($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)
8.4.120.0110.00820.40
8.4.110.0140.00618.82
8.4.100.0130.00717.50
8.4.90.0110.01018.41
8.4.80.0040.00417.70
8.4.70.0100.00917.48
8.4.60.0140.00718.85
8.4.50.0150.00819.60
8.4.40.0150.00317.41
8.4.30.0070.01320.14
8.4.20.0090.00317.89
8.4.10.0000.00826.02
8.3.250.0130.00519.02
8.3.240.0110.00816.25
8.3.230.0120.00716.55
8.3.220.0110.00716.92
8.3.210.0120.00716.78
8.3.200.0080.00116.46
8.3.190.0090.00917.13
8.3.180.0150.00716.50
8.3.170.0080.00019.09
8.3.160.0120.00618.31
8.3.150.0070.01120.54
8.3.140.0030.00716.73
8.3.130.0040.00418.37
8.3.120.0000.00820.46
8.3.110.0060.00320.94
8.3.100.0110.00020.03
8.3.90.0030.00626.77
8.3.80.0040.00419.36
8.3.70.0090.00616.58
8.3.60.0110.00716.38
8.3.50.0120.00723.62
8.3.40.0120.00918.45
8.3.30.0110.00318.41
8.3.20.0040.00424.18
8.3.10.0040.00424.66
8.3.00.0070.00026.16
8.2.290.0090.00920.24
8.2.280.0090.00920.07
8.2.270.0050.00318.84
8.2.260.0100.00318.74
8.2.250.0130.00716.43
8.2.240.0090.00018.81
8.2.230.0080.00022.58
8.2.220.0040.00424.06
8.2.210.0070.00426.77
8.2.200.0040.00418.88
8.2.190.0060.00918.16
8.2.180.0110.00425.92
8.2.170.0110.00418.84
8.2.160.0130.00722.96
8.2.150.0060.00325.66
8.2.140.0080.00024.66
8.2.130.0050.00226.16
8.2.120.0040.00421.05
8.2.110.0070.00321.04
8.2.100.0090.00317.78
8.2.90.0000.00817.78
8.2.80.0080.00017.97
8.2.70.0030.00617.93
8.2.60.0000.00918.09
8.2.50.0080.00018.10
8.2.40.0030.00620.89
8.2.30.0050.00319.16
8.2.20.0040.00417.98
8.2.10.0040.00419.11
8.2.00.0080.00019.15
8.1.330.0070.01222.01
8.1.320.0130.00515.76
8.1.310.0040.00418.57
8.1.300.0140.00018.44
8.1.290.0090.00030.84
8.1.280.0070.01025.92
8.1.270.0000.00822.05
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0100.00018.92
8.1.230.0080.00320.98
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0060.00317.23
8.1.190.0050.00317.22
8.1.180.0060.00318.10
8.1.170.0060.00318.51
8.1.160.0000.00818.96
8.1.150.0000.00818.83
8.1.140.0050.00318.75
8.1.130.0030.00319.98
8.1.120.0040.00417.29
8.1.110.0050.00217.43
8.1.100.0050.00217.27
8.1.90.0040.00417.29
8.1.80.0000.00717.42
8.1.70.0000.00717.30
8.1.60.0060.00317.48
8.1.50.0040.00417.46
8.1.40.0040.00817.48
8.1.30.0050.00317.59
8.1.20.0050.00317.47
8.1.10.0080.00017.45
8.1.00.0040.00417.42
8.0.300.0000.01219.60
8.0.290.0000.00816.63
8.0.280.0070.00018.41
8.0.270.0070.00016.61
8.0.260.0060.00018.35
8.0.250.0040.00416.86
8.0.240.0030.00316.88
8.0.230.0030.00616.75
8.0.220.0070.00016.71
8.0.210.0070.00016.72
8.0.200.0000.00716.87
8.0.190.0040.00316.83
8.0.180.0030.00316.75
8.0.170.0050.00316.72
8.0.160.0000.00716.82
8.0.150.0000.00716.84
8.0.140.0070.00016.81
8.0.130.0030.00313.19
8.0.120.0040.00416.82
8.0.110.0070.00016.84
8.0.100.0030.00416.71
8.0.90.0050.00316.77
8.0.80.0140.00316.79
8.0.70.0000.00816.64
8.0.60.0000.00716.67
8.0.50.0000.00716.84
8.0.30.0100.00716.75
8.0.20.0090.01017.14
8.0.10.0120.00616.84
8.0.00.0090.00916.89
7.4.330.0040.00015.55
7.4.320.0000.00616.32
7.4.300.0030.00316.41
7.4.290.0000.00716.37
7.4.280.0040.00416.43
7.4.270.0060.00016.57
7.4.260.0030.00313.18
7.4.250.0040.00416.32
7.4.240.0030.00316.44
7.4.230.0040.00416.50
7.4.220.0020.00516.37
7.4.210.0090.00816.44
7.4.200.0070.00016.17
7.4.140.0030.01416.34
7.4.130.0040.01416.47
7.4.120.0060.01416.17
7.4.110.0070.01016.35
7.4.100.0130.00316.58
7.4.90.0090.00916.24
7.4.80.0100.01016.40
7.4.70.0110.01116.34
7.4.60.0130.00716.39
7.4.50.0150.00616.13
7.4.40.0090.00916.36
7.4.30.0120.00616.28
7.4.20.0140.00416.36
7.4.10.0190.00016.44
7.4.00.0090.00916.34
7.3.330.0040.00416.10
7.3.320.0000.00513.02
7.3.310.0000.00716.17
7.3.300.0030.00316.17
7.3.290.0050.01016.14
7.3.260.0140.00315.98
7.3.250.0170.00016.23
7.3.240.0160.00316.31
7.3.230.0100.00616.12
7.3.220.0100.00716.05
7.3.210.0140.00416.10
7.3.200.0070.01116.20
7.3.190.0030.01416.06
7.3.180.0090.01216.14
7.3.170.0090.00916.16
7.3.160.0000.01716.07
7.3.150.0090.00916.16
7.3.140.0080.01116.31
7.3.130.0140.00316.27
7.3.120.0170.00316.33
7.3.110.0140.00316.15
7.3.100.0130.00616.21
7.3.90.0000.01716.24
7.3.80.0120.00615.90
7.3.70.0100.00715.99
7.3.60.0130.00316.23
7.3.50.0180.00616.14
7.3.40.0070.01316.11
7.3.30.0080.01315.84
7.3.20.0130.01016.05
7.3.10.0100.01015.89
7.3.00.0090.01315.96

preferences:
29.67 ms | 403 KiB | 5 Q