3v4l.org

run code in 300+ PHP versions simultaneously
<?php function z($a) { debug_zval_dump($a); return $a; } $a = [ 'a', 'b', 'c' ]; debug_zval_dump($a); foreach(z($a) as &$x) { $x .= 'q'; } print_r($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)
8.3.60.0120.00318.22
8.3.50.0120.00522.11
8.3.40.0040.01118.70
8.3.30.0120.00318.93
8.3.20.0070.00720.13
8.3.10.0000.00823.61
8.3.00.0040.00419.08
8.2.180.0140.00725.92
8.2.170.0110.00418.96
8.2.160.0070.00722.96
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0070.00026.16
8.2.120.0040.00419.40
8.2.110.0000.00920.35
8.2.100.0060.00619.38
8.2.90.0080.00019.17
8.2.80.0080.00017.97
8.2.70.0030.00617.63
8.2.60.0040.00418.04
8.2.50.0030.00618.07
8.2.40.0040.00419.94
8.2.30.0030.00618.30
8.2.20.0050.00317.79
8.2.10.0040.00418.09
8.2.00.0030.00519.52
8.1.280.0110.00725.92
8.1.270.0040.00422.04
8.1.260.0000.00826.35
8.1.250.0110.00428.09
8.1.240.0030.00623.76
8.1.230.0060.00619.09
8.1.220.0060.00617.74
8.1.210.0040.00418.77
8.1.200.0070.00317.35
8.1.190.0040.00417.35
8.1.180.0040.00418.10
8.1.170.0040.00418.66
8.1.160.0000.00721.88
8.1.150.0000.00718.52
8.1.140.0040.00417.43
8.1.130.0030.00317.86
8.1.120.0070.00417.35
8.1.110.0090.00017.44
8.1.100.0030.00417.44
8.1.90.0040.00417.37
8.1.80.0040.00417.43
8.1.70.0030.00317.40
8.1.60.0080.00017.56
8.1.50.0050.00317.47
8.1.40.0000.00717.50
8.1.30.0050.00317.48
8.1.20.0040.00417.70
8.1.10.0000.00817.51
8.1.00.0030.00617.45
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0070.00018.38
8.0.270.0030.00317.25
8.0.260.0060.00017.24
8.0.250.0030.00316.95
8.0.240.0000.00716.91
8.0.230.0070.00016.93
8.0.220.0030.00316.85
8.0.210.0000.00816.89
8.0.200.0000.00816.82
8.0.190.0030.00516.98
8.0.180.0000.00916.84
8.0.170.0030.00616.88
8.0.160.0000.00716.82
8.0.150.0000.00716.88
8.0.140.0030.00316.82
8.0.130.0080.00013.27
8.0.120.0000.00716.74
8.0.110.0070.00016.86
8.0.100.0040.00416.76
8.0.90.0000.00816.79
8.0.80.0070.01416.87
8.0.70.0020.00516.75
8.0.60.0030.00516.99
8.0.50.0000.00716.82
8.0.30.0110.01116.97
8.0.20.0100.01317.40
8.0.10.0040.00416.79
8.0.00.0120.00616.80
7.4.330.0000.00515.06
7.4.320.0030.00316.52
7.4.300.0030.00316.36
7.4.290.0000.00716.61
7.4.280.0070.00016.59
7.4.270.0030.00316.51
7.4.260.0030.00316.57
7.4.250.0040.00416.45
7.4.240.0030.00416.55
7.4.230.0040.00416.65
7.4.220.0070.01716.45
7.4.210.0080.00716.50
7.4.200.0040.00416.59
7.4.160.0110.00716.64
7.4.150.0090.01217.40
7.4.140.0120.00517.86
7.4.130.0090.00816.48
7.4.120.0050.01316.56
7.4.110.0090.00916.41
7.4.100.0100.00716.44
7.4.90.0110.00716.28
7.4.80.0070.01119.39
7.4.70.0130.00416.32
7.4.60.0070.01316.45
7.4.50.0080.00016.56
7.4.40.0080.00816.54
7.4.30.0120.00316.59
7.4.00.0100.00315.09
7.3.330.0050.00013.15
7.3.320.0030.00313.23
7.3.310.0040.00416.13
7.3.300.0000.00716.29
7.3.290.0000.01516.18
7.3.280.0110.00716.26
7.3.270.0130.01017.40
7.3.260.0090.01516.24
7.3.250.0130.00816.48
7.3.240.0080.00816.42
7.3.230.0090.00916.46
7.3.210.0060.01216.42
7.3.200.0060.01116.25
7.3.190.0130.00316.36
7.3.180.0100.00716.20
7.3.170.0060.00916.33
7.3.160.0030.01216.55
7.3.120.0090.00314.54
7.2.330.0120.00616.75
7.2.320.0060.01216.73
7.2.310.0190.00616.73
7.2.300.0060.01616.73
7.2.290.0130.00316.56
7.2.60.0040.01216.91
7.2.00.0030.00919.51
7.1.200.0170.00315.66
7.1.100.0000.00818.14
7.1.70.0040.00417.26
7.1.60.0110.01119.70
7.1.50.0070.01116.91
7.1.00.0030.07322.44
7.0.200.0060.00616.55
7.0.140.0070.07322.01
7.0.60.0230.06320.02
7.0.50.0100.06317.87
7.0.40.0130.08320.07
7.0.30.0170.04320.25
7.0.20.0300.08020.09
7.0.10.0070.04320.24
7.0.00.0130.07320.16
5.6.280.0070.07021.04
5.6.210.0030.08320.70
5.6.200.0030.08718.22
5.6.190.0030.08320.46
5.6.180.0370.05720.53
5.6.170.0330.06020.50
5.6.160.0100.08020.50
5.6.150.0100.07718.28
5.6.140.0130.08018.19
5.6.130.0130.07018.27
5.6.120.0030.08020.99
5.6.110.0130.07721.02
5.6.100.0070.08321.04
5.6.90.0070.07720.99
5.6.80.0030.09020.29
5.5.350.4300.04020.53
5.5.340.0170.07318.04
5.5.330.0070.05720.37
5.5.320.0500.07720.29
5.5.310.0130.04720.32
5.5.300.0030.05717.95
5.5.290.0000.04718.08
5.5.280.0100.08020.68
5.5.270.0000.09320.96
5.5.260.0170.07020.79
5.5.250.0030.04020.69
5.5.240.0270.08020.16
5.4.450.0400.03719.45
5.4.440.0430.07019.63
5.4.430.0400.03719.47
5.4.420.0330.03719.18
5.4.410.0270.04019.06
5.4.400.0270.04319.26
5.4.390.0330.03319.23
5.4.380.0400.03019.23
5.4.370.0270.04019.30
5.4.360.0300.03719.21
5.4.350.0270.04019.07
5.4.340.0370.03019.08
5.4.320.0230.04018.93
5.4.310.0430.03719.05
5.4.300.0300.03718.97
5.4.290.0230.04319.21
5.4.280.0470.04018.96
5.4.270.0430.07019.20
5.4.260.0500.06019.14
5.4.250.0430.06319.03
5.4.240.0430.05318.92
5.4.230.0370.04719.11
5.4.220.0570.05719.20
5.4.210.0430.04718.96
5.4.200.0430.04319.18
5.4.190.0500.05319.12
5.4.180.0500.04019.13
5.4.170.0530.04018.93
5.4.160.0400.06719.15
5.4.150.0400.05319.28
5.4.140.0500.06316.28
5.4.130.0300.04716.40
5.4.120.0370.03716.66
5.4.110.0470.05716.18
5.4.100.0430.06016.50
5.4.90.0430.03316.34
5.4.80.0470.06316.51
5.4.70.0400.04316.24
5.4.60.0400.03716.42
5.4.50.0330.04716.52
5.4.40.0400.05716.52
5.4.30.0430.05716.31
5.4.20.0500.05716.51
5.4.10.0430.07016.41
5.4.00.0400.08015.93
5.3.290.0400.04314.89
5.3.280.0300.04314.57
5.3.270.0400.05714.60
5.3.260.0500.06314.83
5.3.250.0500.06314.77
5.3.240.0500.04314.69
5.3.230.0570.05314.60
5.3.220.0400.04714.60
5.3.210.0470.06714.59
5.3.200.0430.03314.64
5.3.190.0400.03314.57
5.3.180.0430.05014.46
5.3.170.0400.05314.63
5.3.160.0400.05314.57
5.3.150.0330.04014.46
5.3.140.0400.03314.56
5.3.130.0530.06714.76
5.3.120.0370.04314.54
5.3.110.0470.07314.46
5.3.100.0470.05014.20
5.3.90.0530.05713.99
5.3.80.0430.07013.92
5.3.70.0430.06714.06
5.3.60.0430.05014.22
5.3.50.0400.06313.86
5.3.40.0400.07013.96
5.3.30.0500.06014.13
5.3.20.0430.05713.69
5.3.10.0430.06013.58
5.3.00.0430.06713.72
5.2.170.0470.04711.05
5.2.160.0430.03311.06
5.2.150.0400.05011.04
5.2.140.0400.05011.05
5.2.130.0400.05711.11
5.2.120.0430.05011.03
5.2.110.0400.05311.18
5.2.100.0430.05311.26
5.2.90.0330.04311.01
5.2.80.0430.04711.17
5.2.70.0400.06011.33
5.2.60.0370.06010.94
5.2.50.0330.05310.97
5.2.40.0400.04010.90
5.2.30.0330.03310.88
5.2.20.0270.03710.89
5.2.10.0330.03710.82
5.2.00.0330.04310.82
5.1.60.0270.04010.82
5.1.50.0370.04310.82
5.1.40.0300.04310.82
5.1.30.0300.05010.82
5.1.20.0300.05010.82
5.1.10.0300.04710.82
5.1.00.0370.03710.82
5.0.50.0070.03010.82
5.0.40.0230.03710.82
5.0.30.0130.03310.82
5.0.20.0170.04310.82
5.0.10.0170.04010.82
5.0.00.0130.06010.82
4.4.90.0170.01310.82
4.4.80.0130.03010.82
4.4.70.0200.03310.82
4.4.60.0170.03310.82
4.4.50.0200.03010.82
4.4.40.0170.05010.82
4.4.30.0130.02010.82
4.4.20.0230.02710.82
4.4.10.0130.02010.82
4.4.00.0170.05310.82
4.3.110.0130.03010.82
4.3.100.0100.01710.82
4.3.90.0170.03010.82
4.3.80.0130.03310.82
4.3.70.0170.02310.82
4.3.60.0200.01710.82
4.3.50.0130.03010.82
4.3.40.0170.05710.82
4.3.30.0030.02710.82
4.3.20.0100.03310.82
4.3.10.0070.03310.82
4.3.00.0100.03310.82

preferences:
42.25 ms | 401 KiB | 5 Q