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[$key]); // var_dump(key($a)); // break; } var_dump(current($a)); } // var_dump(key($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)
8.3.60.0140.00016.73
8.3.50.0070.00716.15
8.3.40.0140.00018.57
8.3.30.0000.01518.71
8.3.20.0120.00320.04
8.3.10.0070.00021.72
8.3.00.0050.00319.56
8.2.180.0100.01016.38
8.2.170.0110.00722.96
8.2.160.0030.01020.35
8.2.150.0000.00924.18
8.2.140.0040.00424.66
8.2.130.0110.00426.16
8.2.120.0040.00417.75
8.2.110.0090.00020.35
8.2.100.0000.01217.63
8.2.90.0040.00419.36
8.2.80.0030.00617.97
8.2.70.0050.00317.63
8.2.60.0040.00418.05
8.2.50.0030.00618.07
8.2.40.0060.00321.09
8.2.30.0040.00419.78
8.2.20.0040.00417.65
8.2.10.0000.00818.05
8.2.00.0040.00418.10
8.1.280.0150.00625.92
8.1.270.0140.00020.23
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0040.00423.87
8.1.230.0060.00617.47
8.1.220.0040.00417.76
8.1.210.0040.00418.77
8.1.200.0000.01017.35
8.1.190.0090.00017.36
8.1.180.0030.00518.10
8.1.170.0000.00818.66
8.1.160.0000.00921.88
8.1.150.0040.00418.76
8.1.140.0060.00317.46
8.1.130.0000.00717.70
8.1.120.0000.00717.42
8.1.110.0040.00417.30
8.1.100.0050.00217.51
8.1.90.0030.00517.48
8.1.80.0000.00717.48
8.1.70.0030.00317.51
8.1.60.0000.00817.53
8.1.50.0060.00317.55
8.1.40.0000.00817.40
8.1.30.0060.00317.61
8.1.20.0030.00617.65
8.1.10.0000.00817.53
8.1.00.0050.00317.50
8.0.300.0060.00318.77
8.0.290.0000.00716.63
8.0.280.0000.00718.43
8.0.270.0030.00317.29
8.0.260.0030.00317.16
8.0.250.0000.00716.96
8.0.240.0000.00716.96
8.0.230.0000.00716.93
8.0.220.0060.00316.88
8.0.210.0050.00316.85
8.0.200.0040.00416.82
8.0.190.0000.00816.95
8.0.180.0040.00416.89
8.0.170.0080.00016.93
8.0.160.0000.00716.87
8.0.150.0040.00416.90
8.0.140.0040.00416.75
8.0.130.0020.00613.30
8.0.120.0080.00016.82
8.0.110.0030.00516.74
8.0.100.0030.00516.89
8.0.90.0040.00416.87
8.0.80.0070.01016.93
8.0.70.0040.00416.72
8.0.60.0070.00016.91
8.0.50.0000.00816.95
8.0.30.0070.01117.03
8.0.20.0100.00717.40
8.0.10.0040.00417.12
8.0.00.0040.01316.90
7.4.330.0000.00515.13
7.4.320.0030.00316.49
7.4.300.0030.00316.41
7.4.290.0040.00416.51
7.4.280.0000.00716.38
7.4.270.0000.00816.61
7.4.260.0030.00316.47
7.4.250.0070.00016.53
7.4.240.0000.00716.44
7.4.230.0030.00316.37
7.4.220.0030.01416.53
7.4.210.0090.00816.59
7.4.200.0030.00516.59
7.4.160.0080.00816.41
7.4.150.0100.00717.40
7.4.140.0100.01017.86
7.4.130.0070.01016.62
7.4.120.0120.00716.48
7.4.110.0090.00816.49
7.4.100.0160.00616.42
7.4.90.0140.00416.51
7.4.80.0100.00719.39
7.4.70.0090.00616.42
7.4.60.0090.01116.59
7.4.50.0040.00416.29
7.4.40.0090.00916.45
7.4.30.0060.01216.41
7.4.00.0030.01014.73
7.3.330.0000.00613.05
7.3.320.0050.00013.26
7.3.310.0060.00016.16
7.3.300.0030.00316.27
7.3.290.0030.00316.26
7.3.280.0090.01016.30
7.3.270.0030.01417.40
7.3.260.0080.00816.27
7.3.250.0100.00816.34
7.3.240.0070.01016.29
7.3.230.0140.00616.39
7.3.210.0110.00616.39
7.3.200.0090.01316.44
7.3.190.0070.01016.62
7.3.180.0000.01516.38
7.3.170.0120.00916.54
7.3.160.0070.01516.20
7.2.330.0130.00316.37
7.2.320.0030.01716.73
7.2.310.0110.00616.40
7.2.300.0120.00316.79
7.2.290.0090.00916.63
7.2.60.0120.00016.83
7.2.00.0060.00619.18
7.1.200.0030.00615.80
7.1.100.0000.01218.25
7.1.70.0000.00717.16
7.1.60.0070.01820.03
7.1.50.0040.01917.01
7.1.00.0000.08022.48
7.0.200.0220.01014.98
7.0.60.0100.07719.90
7.0.50.0100.06317.71
7.0.40.0130.04320.40
7.0.30.0200.04720.20
7.0.20.0370.07320.20
7.0.10.0170.04720.17
7.0.00.0170.06720.04
5.6.280.0000.07321.04
5.6.210.0100.07720.76
5.6.200.0070.08718.20
5.6.190.0030.04720.43
5.6.180.0000.08320.67
5.6.170.0330.07720.38
5.6.160.0200.07020.61
5.6.150.0100.07018.13
5.6.140.0070.07318.09
5.6.130.0030.04318.21
5.6.120.0100.04321.01
5.6.110.0030.04321.13
5.6.100.0000.04721.11
5.6.90.0070.04320.95
5.6.80.0100.07320.35
5.6.70.3970.03020.50
5.5.350.0000.08720.52
5.5.340.0100.06718.02
5.5.330.0070.08320.16
5.5.320.0230.04320.30
5.5.310.0300.06720.13
5.5.300.0100.07018.01
5.5.290.0070.03717.98
5.5.280.0070.08320.68
5.5.270.0230.06720.75
5.5.260.0070.04020.79
5.5.250.0130.06720.49
5.5.240.0130.06320.12
5.4.450.0230.05019.12
5.4.440.0170.06019.10
5.4.430.0330.05019.46
5.4.420.0170.05019.13
5.4.410.0330.06718.96
5.4.400.0200.05319.17
5.4.390.0530.05718.95
5.4.380.0130.05719.16
5.4.370.0070.06019.19
5.4.360.0170.05019.28
5.4.350.0100.05719.26
5.4.340.0030.06019.15
5.4.320.0270.05019.16
5.4.310.0130.05019.15
5.4.300.0100.06018.79
5.4.290.0470.06019.27
5.4.280.0600.05719.08
5.4.270.0500.05318.93
5.4.260.0570.04319.08
5.4.250.0100.05319.30
5.4.240.0270.06018.91
5.4.230.0370.04719.08
5.4.220.0200.06019.17
5.4.210.0470.05719.14
5.4.200.0130.05018.93
5.4.190.0100.05019.17
5.4.180.0100.05319.14
5.4.170.0530.06019.29
5.4.160.0500.04718.79
5.4.150.0530.06019.24
5.4.140.0470.04716.20
5.4.130.0600.05016.28
5.4.120.0500.04716.49
5.4.110.0370.05716.46
5.4.100.0470.04716.21
5.4.90.0530.05016.45
5.4.80.0570.04316.47
5.4.70.0000.07316.50
5.4.60.0000.05016.13
5.4.50.0070.06716.16
5.4.40.0000.07716.31
5.4.30.0230.03316.20
5.4.20.0300.03316.20
5.4.10.0000.05016.46

preferences:
50.31 ms | 400 KiB | 5 Q