3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [1,2,3,4,5,6,7,8,9]; foreach ($a as $key => &$value) { if ($key === 4) { unset($a[$key + 1]); var_dump(key($a)); break; } } var_dump(key($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)
8.3.60.0120.00316.34
8.3.50.0110.00416.63
8.3.40.0110.00718.89
8.3.30.0140.00718.53
8.3.20.0060.00320.39
8.3.10.0070.00021.95
8.3.00.0040.00419.69
8.2.180.0110.00716.35
8.2.170.0100.00722.96
8.2.160.0070.00720.53
8.2.150.0100.00024.18
8.2.140.0000.00824.66
8.2.130.0050.00326.16
8.2.120.0080.00017.50
8.2.110.0060.00620.43
8.2.100.0060.00617.63
8.2.90.0000.00719.30
8.2.80.0040.00417.97
8.2.70.0050.00317.75
8.2.60.0060.00318.03
8.2.50.0040.00418.07
8.2.40.0030.00621.25
8.2.30.0040.00419.85
8.2.20.0040.00417.75
8.2.10.0040.00418.16
8.2.00.0040.00418.00
8.1.270.0060.01222.10
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0120.00623.92
8.1.230.0080.00317.42
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0030.00717.35
8.1.190.0040.00417.35
8.1.180.0040.00418.10
8.1.170.0050.00318.64
8.1.160.0050.00222.02
8.1.150.0040.00418.80
8.1.140.0080.00017.33
8.1.130.0080.00017.64
8.1.120.0000.00717.48
8.1.110.0060.00317.43
8.1.100.0000.00717.50
8.1.90.0040.00417.39
8.1.80.0000.00717.49
8.1.70.0000.00717.46
8.1.60.0030.00617.50
8.1.50.0040.00417.43
8.1.40.0040.00417.43
8.1.30.0040.00417.58
8.1.20.0040.00417.61
8.1.10.0040.00417.51
8.1.00.0030.00617.33
8.0.300.0000.00718.77
8.0.290.0080.00016.75
8.0.280.0030.00318.44
8.0.270.0000.00717.27
8.0.260.0000.00617.27
8.0.250.0070.00016.91
8.0.240.0040.00416.92
8.0.230.0050.00216.96
8.0.220.0000.00716.83
8.0.210.0000.00716.85
8.0.200.0030.00316.99
8.0.190.0080.00016.96
8.0.180.0040.00416.80
8.0.170.0030.00516.95
8.0.160.0030.00516.92
8.0.150.0050.00316.82
8.0.140.0030.00316.89
8.0.130.0000.00713.27
8.0.120.0050.00316.75
8.0.110.0070.00016.95
8.0.100.0040.00416.84
8.0.90.0050.00316.72
8.0.80.0030.01316.80
8.0.70.0000.00716.98
8.0.60.0000.00816.79
8.0.50.0050.00316.84
8.0.30.0080.01117.00
8.0.20.0110.00817.40
8.0.10.0070.00016.84
8.0.00.0100.00916.72
7.4.330.0000.00615.14
7.4.320.0030.00316.37
7.4.300.0020.00516.54
7.4.290.0030.00316.48
7.4.280.0040.00416.63
7.4.270.0030.00316.61
7.4.260.0040.00416.59
7.4.250.0080.00016.45
7.4.240.0030.00316.54
7.4.230.0000.00716.71
7.4.220.0060.01216.54
7.4.210.0110.00716.58
7.4.200.0070.00016.41
7.4.160.0090.00616.60
7.4.150.0060.01217.40
7.4.140.0130.00617.86
7.4.130.0060.01116.49
7.4.120.0120.00516.55
7.4.110.0070.01016.47
7.4.100.0120.00616.47
7.4.90.0080.00816.50
7.4.80.0140.01319.39
7.4.70.0110.00516.41
7.4.60.0060.01416.43
7.4.50.0050.00316.30
7.4.40.0090.01216.79
7.4.30.0180.00316.32
7.4.00.0040.01214.79
7.3.330.0000.00513.16
7.3.320.0000.00613.20
7.3.310.0040.00416.27
7.3.300.0000.00616.42
7.3.290.0000.00616.18
7.3.280.0110.00516.33
7.3.270.0150.00317.40
7.3.260.0070.01016.54
7.3.250.0090.00916.35
7.3.240.0030.01316.26
7.3.230.0100.00716.39
7.3.210.0110.00716.21
7.3.200.0110.00516.22
7.3.190.0160.00016.21
7.3.180.0120.00416.35
7.3.170.0060.01016.30
7.3.160.0060.01016.38
7.2.330.0120.00616.68
7.2.320.0130.00816.36
7.2.310.0050.01416.67
7.2.300.0090.00916.68
7.2.290.0120.00616.67
7.2.60.0090.00616.66
7.2.00.0060.00919.13
7.1.200.0100.00315.80
7.1.100.0060.00617.79
7.1.70.0000.00717.27
7.1.60.0150.01120.03
7.1.50.0040.01817.01
7.1.00.0030.07722.46
7.0.200.0330.00614.79
7.0.60.0000.04320.08
7.0.50.0100.03317.79
7.0.40.0070.08720.20
7.0.30.0500.07020.00
7.0.20.0300.03720.16
7.0.10.0100.05720.09
7.0.00.0100.07720.29
5.6.280.0000.03321.09
5.6.210.0070.07320.75
5.6.200.0030.06318.08
5.6.190.0000.09020.35
5.6.180.3230.03720.67
5.6.170.0270.04720.32
5.6.160.0130.07720.47
5.6.150.0070.04018.19
5.6.140.0100.07718.21
5.6.130.0000.07718.16
5.6.120.0070.03720.99
5.6.110.0070.08021.01
5.6.100.0170.07321.08
5.6.90.0000.04720.96
5.6.80.0000.08720.40
5.6.70.4400.04020.27
5.5.350.0330.07320.32
5.5.340.0100.07718.01
5.5.330.0200.06720.23
5.5.320.0100.05020.13
5.5.310.0270.05720.19
5.5.300.0000.05317.98
5.5.290.0000.04317.98
5.5.280.0130.04720.76
5.5.270.0130.03020.68
5.5.260.0130.03320.76
5.5.250.0100.06720.77
5.5.240.0300.07320.18
5.4.450.0570.05719.58
5.4.440.0670.05719.13
5.4.430.0500.06019.24
5.4.420.0570.05019.57
5.4.410.0600.05318.96
5.4.400.0630.04719.21
5.4.390.0570.05319.16
5.4.380.0630.05319.29
5.4.370.0430.05318.78
5.4.360.0530.05719.11
5.4.350.0570.06019.29
5.4.340.0570.05318.95
5.4.320.0570.05319.12
5.4.310.0500.05718.99
5.4.300.0470.06019.27
5.4.290.0700.05019.16
5.4.280.0670.04719.27
5.4.270.0670.04719.12
5.4.260.0530.05319.07
5.4.250.0670.04319.25
5.4.240.0530.04719.07
5.4.230.0430.05718.77
5.4.220.0330.06319.17
5.4.210.0400.05719.18
5.4.200.0570.05319.22
5.4.190.0630.04719.24
5.4.180.0600.04718.77
5.4.170.0600.04719.15
5.4.160.0630.04719.08
5.4.150.0570.05319.25
5.4.140.0630.05316.20
5.4.130.0630.05316.10
5.4.120.0500.05316.36
5.4.110.0570.05316.48
5.4.100.0600.05716.54
5.4.90.0700.05716.61
5.4.80.0500.05016.21
5.4.70.0000.06016.20
5.4.60.0200.05316.16
5.4.50.0030.04016.36
5.4.40.0170.04316.37
5.4.30.0330.06716.45
5.4.20.0230.06316.45

preferences:
133.55 ms | 400 KiB | 5 Q