3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $b = [&$a]; $c = $b; unset($a); // <-- $b[0] = 2; echo "$b[0] $c[0]"; // 2 1

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)
8.3.130.0040.00418.47
8.3.120.0040.01420.78
8.3.110.0120.00618.23
8.3.100.0040.00416.37
8.3.90.0090.00626.77
8.3.80.0070.00319.36
8.3.70.0040.01118.06
8.3.60.0110.00418.55
8.3.50.0130.00718.00
8.3.40.0120.00618.72
8.3.30.0120.00318.84
8.3.20.0000.00724.18
8.3.10.0050.00324.66
8.3.00.0030.00626.16
8.2.250.0000.00816.85
8.2.240.0030.00619.16
8.2.230.0000.01420.94
8.2.220.0070.00324.06
8.2.210.0140.00626.77
8.2.200.0050.00518.88
8.2.190.0180.00316.63
8.2.180.0070.01025.92
8.2.170.0090.00618.96
8.2.160.0130.00322.96
8.2.150.0050.00225.66
8.2.140.0050.00324.66
8.2.130.0000.00826.16
8.2.120.0040.00426.16
8.2.110.0030.01322.11
8.2.100.0080.00417.72
8.2.90.0060.00317.75
8.2.80.0050.00318.88
8.2.70.0090.00317.63
8.2.60.0040.00417.93
8.2.50.0030.00618.07
8.2.40.0110.00018.34
8.2.30.0070.00018.12
8.2.20.0040.00418.21
8.2.10.0000.00819.23
8.2.00.0040.00419.36
8.1.300.0090.00620.20
8.1.290.0050.00530.84
8.1.280.0140.00425.92
8.1.270.0080.00023.99
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0080.00320.64
8.1.230.0060.00617.77
8.1.220.0080.00017.78
8.1.210.0060.00618.77
8.1.200.0060.00317.48
8.1.190.0090.00017.24
8.1.180.0040.00418.10
8.1.170.0030.00618.64
8.1.160.0030.00618.93
8.1.150.0050.00318.88
8.1.140.0030.00319.02
8.1.130.0060.00020.30
8.1.120.0000.00717.44
8.1.110.0000.00917.48
8.1.100.0080.00017.43
8.1.90.0030.00417.50
8.1.80.0030.00617.34
8.1.70.0020.00517.37
8.1.60.0070.00017.61
8.1.50.0030.00617.46
8.1.40.0040.00417.52
8.1.30.0040.00417.66
8.1.20.0000.00817.46
8.1.10.0070.00017.55
8.1.00.0070.00017.53
8.0.300.0060.00318.77
8.0.290.0000.00716.63
8.0.280.0030.00318.42
8.0.270.0040.00417.93
8.0.260.0060.00018.56
8.0.250.0030.00316.94
8.0.240.0000.00916.91
8.0.230.0000.00717.00
8.0.220.0000.00716.90
8.0.210.0040.00416.86
8.0.200.0000.00616.81
8.0.190.0000.00816.88
8.0.180.0050.00316.84
8.0.170.0000.01116.91
8.0.160.0030.00416.88
8.0.150.0030.00416.87
8.0.140.0060.00516.89
8.0.130.0050.00013.24
8.0.120.0040.00416.83
8.0.110.0050.00316.75
8.0.100.0000.00716.75
8.0.90.0040.00416.91
8.0.80.0130.00316.77
8.0.70.0120.00316.87
8.0.60.0090.00616.79
8.0.50.0000.01516.84
8.0.30.0070.00716.86
8.0.20.0100.00616.82
8.0.10.0060.00916.91
8.0.00.0110.00317.05
7.4.330.0000.00515.55
7.4.320.0040.00416.52
7.4.300.0000.00716.51
7.4.290.0040.00416.37
7.4.280.0040.00416.63
7.4.270.0000.00716.51
7.4.260.0050.00313.25
7.4.250.0000.00716.50
7.4.240.0050.00216.47
7.4.230.0030.00316.60
7.4.220.0030.00316.69
7.4.210.0030.01016.62
7.4.200.0030.01016.53
7.4.190.0040.01116.64
7.4.180.0070.00716.71
7.4.160.0160.00016.55
7.4.150.0040.01116.62
7.4.140.0000.01416.50
7.4.130.0140.00016.45
7.4.120.0070.00716.32
7.4.110.0090.00616.63
7.4.100.0060.00916.59
7.4.90.0120.00616.49
7.4.80.0070.01116.47
7.4.70.0070.01216.40
7.4.60.0040.01116.45
7.4.50.0070.00716.43
7.4.40.0080.00616.45
7.4.30.0070.00716.52
7.4.20.0040.01116.54
7.4.10.0070.00716.54
7.4.00.0070.00716.61
7.3.330.0040.00416.38
7.3.320.0050.00013.19
7.3.310.0070.00016.39
7.3.300.0000.00716.15
7.3.290.0100.00316.36
7.3.280.0100.00316.30
7.3.270.0100.00316.34
7.3.260.0000.01316.26
7.3.250.0070.00716.34
7.3.240.0070.00616.36
7.3.230.0100.00416.32
7.3.220.0070.00716.11
7.3.210.0000.01416.14
7.3.200.0030.01016.08
7.3.190.0140.00016.14
7.3.180.0070.00716.25
7.3.170.0080.00616.14
7.3.160.0070.00716.18
7.3.150.0070.00716.17
7.3.140.0070.00716.18
7.3.130.0090.00516.14
7.3.120.0100.00316.15
7.3.110.0000.01416.17
7.3.100.0070.00716.18
7.3.90.0070.00716.50
7.3.80.0110.00316.21
7.3.70.0130.00016.43
7.3.60.0090.00616.53
7.3.50.0030.01016.48
7.3.40.0120.00616.38
7.3.30.0060.00616.34
7.3.20.0100.00316.41
7.3.10.0100.00316.29
7.3.00.0050.00916.25

preferences:
27.7 ms | 403 KiB | 5 Q