3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a(&$a){$a = null;} $a = 1; var_dump($a += a($a)); var_dump($a); $b = 1; var_dump($b = $b + a($b)); var_dump($b);

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)
8.3.60.0180.00418.43
8.3.50.0120.00316.49
8.3.40.0080.00818.68
8.3.30.0070.00718.67
8.3.20.0040.00418.68
8.3.10.0040.00421.73
8.3.00.0000.00820.84
8.2.180.0150.00018.19
8.2.170.0140.00322.96
8.2.160.0070.01119.21
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0040.00421.00
8.2.120.0000.00726.35
8.2.110.0030.00620.90
8.2.100.0070.00418.04
8.2.90.0040.00419.07
8.2.80.0080.00017.97
8.2.70.0060.00317.50
8.2.60.0110.00017.93
8.2.50.0000.00818.10
8.2.40.0000.00820.59
8.2.30.0050.00220.61
8.2.20.0030.00717.75
8.2.10.0000.00718.01
8.2.00.0000.00717.93
8.1.280.0140.00725.92
8.1.270.0040.00423.92
8.1.260.0040.00428.09
8.1.250.0070.00028.09
8.1.240.0000.00922.18
8.1.230.0060.00617.42
8.1.220.0050.00317.74
8.1.210.0050.00318.77
8.1.200.0060.00317.23
8.1.190.0060.00317.23
8.1.180.0040.00418.10
8.1.170.0060.00318.46
8.1.160.0000.00718.93
8.1.150.0020.00518.86
8.1.140.0040.00419.57
8.1.130.0000.00817.57
8.1.120.0000.00717.28
8.1.110.0000.00817.32
8.1.100.0070.00017.39
8.1.90.0040.00417.28
8.1.80.0040.00417.43
8.1.70.0070.00017.25
8.1.60.0030.00517.56
8.1.50.0080.00017.56
8.1.40.0040.00417.43
8.1.30.0040.00417.63
8.1.20.0060.00317.63
8.1.10.0000.00817.30
8.1.00.0000.00817.43
8.0.300.0030.00618.77
8.0.290.0040.00416.63
8.0.280.0000.00718.39
8.0.270.0040.00417.11
8.0.260.0040.00417.12
8.0.250.0030.00316.96
8.0.240.0040.00416.95
8.0.230.0070.00016.96
8.0.220.0060.00316.89
8.0.210.0030.00316.90
8.0.200.0040.00416.91
8.0.190.0000.00716.90
8.0.180.0070.00016.80
8.0.170.0040.00416.80
8.0.160.0030.00516.86
8.0.150.0030.00616.71
8.0.140.0080.00016.86
8.0.130.0030.00313.38
8.0.120.0040.00416.94
8.0.110.0000.01116.74
8.0.100.0000.00816.79
8.0.90.0040.00416.91
8.0.80.0160.00016.86
8.0.70.0070.00016.92
8.0.60.0050.00316.80
8.0.50.0000.00716.89
8.0.30.0030.01317.16
8.0.20.0110.01017.40
8.0.10.0000.00716.90
8.0.00.0120.00816.67
7.4.330.0030.00315.08
7.4.320.0030.00316.45
7.4.300.0000.00616.46
7.4.290.0030.00516.57
7.4.280.0040.00416.58
7.4.270.0030.00316.61
7.4.260.0000.00716.58
7.4.250.0040.00416.37
7.4.240.0030.00316.42
7.4.230.0030.00316.38
7.4.220.0030.01616.63
7.4.210.0070.01316.46
7.4.200.0070.00016.41
7.4.160.0060.01216.37
7.4.150.0090.00917.40
7.4.140.0080.01017.86
7.4.130.0090.00816.50
7.4.120.0060.01016.41
7.4.110.0090.00916.43
7.4.100.0100.00716.61
7.4.90.0090.00916.64
7.4.80.0060.01219.39
7.4.70.0170.00016.46
7.4.60.0110.00516.34
7.4.50.0040.01116.44
7.4.40.0140.00316.51
7.4.30.0100.01316.44
7.4.00.0080.00815.09
7.3.330.0070.00013.30
7.3.320.0050.00013.12
7.3.310.0050.00216.46
7.3.300.0000.00616.25
7.3.290.0090.00716.29
7.3.280.0100.00916.29
7.3.270.0100.00717.40
7.3.260.0040.01316.50
7.3.250.0140.00616.30
7.3.240.0120.00516.32
7.3.230.0120.00416.39
7.3.210.0070.01016.53
7.3.200.0140.00416.47
7.3.190.0090.00416.67
7.3.180.0070.01016.46
7.3.170.0030.01316.51
7.3.160.0060.01016.25
7.2.330.0100.00716.63
7.2.320.0090.00916.38
7.2.310.0100.00716.56
7.2.300.0140.00316.50
7.2.290.0030.01316.28
7.2.80.0070.00716.61
7.2.60.0130.00016.57
7.2.00.0110.00819.47
7.1.200.0070.00315.93
7.1.100.0070.00418.09
7.1.70.0060.00317.24
7.1.60.0070.01319.27
7.1.00.0100.06322.32
7.0.200.0370.00914.88
7.0.60.0270.06720.06
7.0.50.0200.05720.27
7.0.40.0430.06720.34
7.0.30.0200.07720.41
7.0.20.0200.08020.32
7.0.10.0200.05720.42
7.0.00.0300.07020.32
5.6.280.0030.07321.04
5.6.210.0170.07020.73
5.6.200.0200.05321.10
5.6.190.0270.07721.05
5.6.180.0170.08021.12
5.6.170.0230.06721.14
5.6.160.0230.06721.10
5.6.150.0370.05021.13
5.6.140.0270.06721.00
5.6.130.0370.07021.01
5.6.120.0200.07320.91
5.6.110.0100.07021.14
5.6.100.0430.05021.18
5.6.90.0270.07021.14
5.6.80.0370.06020.55
5.6.70.0670.05320.40
5.6.60.0430.08020.49
5.6.50.0400.06020.45
5.6.40.0370.05320.52
5.6.30.0400.05320.29
5.6.20.0270.06320.39
5.6.10.0530.06320.48
5.6.00.0470.07020.47
5.5.350.0270.07320.44
5.5.340.0130.05720.70
5.5.330.0400.05020.69
5.5.320.0200.06720.85
5.5.310.0230.07020.88
5.5.300.0200.08320.97
5.5.290.0270.05720.83
5.5.280.0130.06320.88
5.5.270.0130.06020.87
5.5.260.0400.07020.92
5.5.250.0230.06020.65
5.5.240.0330.05720.37
5.5.230.0470.06720.23
5.5.220.0330.07020.26
5.5.210.0530.06320.17
5.5.200.0500.06020.36
5.5.190.0330.05720.35
5.5.180.0330.05720.16
5.5.160.0400.06320.14
5.5.150.0500.06720.13
5.5.140.0470.07320.20
5.5.130.0370.06020.20
5.5.120.0570.05720.18
5.5.110.0270.07320.36
5.5.100.0170.07320.09
5.5.90.0270.06020.14
5.5.80.0470.05720.12
5.5.70.0530.04020.18
5.5.60.0330.05020.02
5.5.50.0400.05020.06
5.5.40.0600.06019.97
5.5.30.0370.05320.12
5.5.20.0300.06020.13
5.5.10.0370.05720.08
5.5.00.0230.07020.05

preferences:
58.78 ms | 400 KiB | 5 Q