3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['foo','bar','baz']; // touch refcount $b = &$a; foreach($a as $v) { unset($a[1]); var_dump($a); } echo 'final:', "\n"; var_dump($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)
8.3.60.0150.00616.75
8.3.50.0150.00016.17
8.3.40.0000.01418.86
8.3.30.0070.00718.67
8.3.20.0080.00020.22
8.3.10.0040.00423.70
8.3.00.0050.00323.56
8.2.180.0110.00718.16
8.2.170.0090.00622.96
8.2.160.0130.00020.37
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0000.00819.70
8.2.120.0040.00426.35
8.2.110.0060.00320.33
8.2.100.0040.00817.91
8.2.90.0080.00019.22
8.2.80.0000.00817.97
8.2.70.0070.00317.75
8.2.60.0000.00818.15
8.2.50.0060.00318.07
8.2.40.0040.00422.27
8.2.30.0000.00719.54
8.2.20.0040.00417.66
8.2.10.0070.00317.93
8.2.00.0040.00418.09
8.1.280.0070.00725.92
8.1.270.0030.00523.96
8.1.260.0000.00828.09
8.1.250.0030.00628.09
8.1.240.0060.00322.21
8.1.230.0090.00317.42
8.1.220.0000.00817.74
8.1.210.0050.00318.77
8.1.200.0060.00317.22
8.1.190.0000.00817.22
8.1.180.0040.00418.10
8.1.170.0000.00818.55
8.1.160.0040.00420.80
8.1.150.0070.00018.89
8.1.140.0000.00719.57
8.1.130.0000.00817.73
8.1.120.0000.00717.35
8.1.110.0070.00017.34
8.1.100.0070.00017.47
8.1.90.0000.00817.47
8.1.80.0000.00717.43
8.1.70.0030.00317.43
8.1.60.0000.00817.59
8.1.50.0050.00317.39
8.1.40.0040.00417.51
8.1.30.0110.00017.60
8.1.20.0000.00817.52
8.1.10.0000.00817.41
8.1.00.0070.00017.39
8.0.300.0040.00418.77
8.0.290.0030.00616.63
8.0.280.0000.00718.37
8.0.270.0030.00317.29
8.0.260.0060.00017.24
8.0.250.0040.00417.01
8.0.240.0070.00016.82
8.0.230.0070.00016.81
8.0.220.0000.00716.91
8.0.210.0000.00716.89
8.0.200.0060.00016.93
8.0.190.0030.00316.91
8.0.180.0070.00316.77
8.0.170.0050.00316.95
8.0.160.0030.00316.92
8.0.150.0020.00516.72
8.0.140.0030.00316.77
8.0.130.0000.00513.27
8.0.120.0060.00316.85
8.0.110.0000.00716.89
8.0.100.0040.00416.86
8.0.90.0040.00416.90
8.0.80.0070.01416.95
8.0.70.0040.00416.90
8.0.60.0000.00716.71
8.0.50.0030.00516.92
8.0.30.0110.00717.01
8.0.20.0130.01417.40
8.0.10.0040.00417.02
8.0.00.0100.01016.80
7.4.330.0050.00016.79
7.4.320.0030.00316.47
7.4.300.0030.00316.44
7.4.290.0000.00616.48
7.4.280.0030.00616.58
7.4.270.0000.00616.50
7.4.260.0000.00716.57
7.4.250.0000.00716.55
7.4.240.0020.00516.61
7.4.230.0030.00316.59
7.4.220.0140.00516.68
7.4.210.0080.00916.67
7.4.200.0000.00716.24
7.4.160.0090.00616.56
7.4.150.0120.00617.40
7.4.140.0140.01017.86
7.4.130.0120.01016.58
7.4.120.0060.01516.50
7.4.110.0090.00916.63
7.4.100.0060.01216.61
7.4.90.0040.01416.65
7.4.80.0160.00319.39
7.4.70.0130.00316.38
7.4.60.0110.01116.48
7.4.50.0120.00616.41
7.4.40.0120.00416.57
7.4.30.0040.01816.54
7.4.00.0110.00414.98
7.3.330.0050.00013.16
7.3.320.0000.00613.16
7.3.310.0000.00716.19
7.3.300.0030.00316.25
7.3.290.0030.00316.30
7.3.280.0150.00316.30
7.3.270.0110.00917.40
7.3.260.0040.01216.64
7.3.250.0130.00616.39
7.3.240.0080.00816.44
7.3.230.0180.00716.46
7.3.210.0060.01216.29
7.3.200.0070.01019.39
7.3.190.0110.00716.32
7.3.180.0090.00616.41
7.3.170.0140.00316.38
7.3.160.0120.01216.36
7.2.330.0140.01116.34
7.2.320.0070.01016.57
7.2.310.0110.00716.63
7.2.300.0100.00716.74
7.2.290.0080.01216.51
7.2.60.0060.00816.80
7.2.00.0040.00919.55
7.1.200.0070.00315.67
7.1.100.0130.00718.27
7.1.70.0030.00817.27
7.1.60.0120.01219.12
7.1.50.0000.01116.93
7.1.00.0070.07022.42
7.0.200.0030.01014.72
7.0.60.0200.07321.69
7.0.50.0000.07317.75
7.0.40.0000.05020.08
7.0.30.0300.07020.20
7.0.20.0230.08719.99
7.0.10.0100.05320.21
7.0.00.0100.08319.99
5.6.280.0030.05321.04
5.6.210.0030.06320.71
5.6.200.0100.07718.17
5.6.190.0070.09020.67
5.6.180.0330.07320.45
5.6.170.0230.06320.48
5.6.160.0030.08720.49
5.6.150.0070.03718.20
5.6.140.0100.07018.21
5.6.130.0070.08018.16
5.6.120.0200.07321.05
5.6.110.0070.09021.02
5.6.100.0070.04321.01
5.6.90.0030.06320.98
5.6.80.0130.07320.53
5.5.350.0100.06020.41
5.5.340.0030.06717.95
5.5.330.0030.07020.29
5.5.320.0230.06020.17
5.5.310.0130.04720.50
5.5.300.0070.03718.02
5.5.290.0100.06017.88
5.5.280.0000.07720.80
5.5.270.0030.05720.79
5.5.260.0070.05720.87
5.5.250.0070.08720.58
5.5.240.0070.05320.35

preferences:
66.98 ms | 400 KiB | 5 Q