3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=['ref'=>&$a]; $a['val']=$a; var_dump($a); //normal, as expected var_dump(unserialize(serialize($a))); //half-arsed

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)
8.4.120.0070.00224.19
8.4.110.0110.00918.99
8.4.100.0100.00922.46
8.4.90.0150.00618.62
8.4.80.0120.00817.74
8.4.70.0040.00517.99
8.4.60.0130.00618.86
8.4.50.0130.00719.25
8.4.40.0100.01019.51
8.4.30.0110.00818.45
8.4.20.0190.00018.75
8.4.10.0030.00617.49
8.3.250.0110.00818.75
8.3.240.0050.00417.28
8.3.230.0100.00816.57
8.3.220.0030.00717.01
8.3.210.0100.01016.60
8.3.200.0050.00416.72
8.3.190.0120.00616.91
8.3.180.0120.00716.52
8.3.170.0110.00719.01
8.3.160.0120.00616.60
8.3.150.0070.01120.82
8.3.140.0110.00416.65
8.3.130.0070.01018.41
8.3.120.0050.00518.91
8.3.110.0080.00020.94
8.3.100.0090.00024.06
8.3.90.0040.00426.77
8.3.80.0030.00618.56
8.3.70.0110.00316.50
8.3.60.0160.00616.63
8.3.50.0080.00616.48
8.3.40.0090.01119.98
8.3.30.0150.00618.93
8.3.20.0050.01022.94
8.3.10.0090.00523.31
8.3.00.0070.00922.52
8.2.290.0050.00320.36
8.2.280.0120.00718.48
8.2.270.0070.01117.14
8.2.260.0090.00618.46
8.2.250.0060.01117.38
8.2.240.0040.00416.93
8.2.230.0050.00522.58
8.2.220.0040.00437.54
8.2.210.0110.00426.77
8.2.200.0100.00216.63
8.2.190.0090.00616.58
8.2.180.0070.01125.92
8.2.170.0090.01218.87
8.2.160.0130.00621.51
8.2.150.0050.00822.40
8.2.140.0080.00522.53
8.2.130.0110.00223.34
8.2.120.0080.00522.79
8.2.110.0070.00819.85
8.2.100.0100.00718.37
8.2.90.0080.00719.31
8.2.80.0090.00519.88
8.2.70.0040.01018.34
8.2.60.0090.00518.52
8.2.50.0050.01018.66
8.2.40.0100.00518.34
8.2.30.0080.01018.36
8.2.20.0120.00418.33
8.2.10.0070.00618.87
8.2.00.0070.00518.97
8.1.330.0120.00722.04
8.1.320.0120.00716.27
8.1.310.0040.01116.64
8.1.300.0040.00416.05
8.1.290.0000.00918.88
8.1.280.0040.01125.92
8.1.270.0070.00422.93
8.1.260.0070.00524.13
8.1.250.0050.00825.10
8.1.240.0050.00721.18
8.1.230.0100.00319.75
8.1.220.0060.00718.32
8.1.210.0060.00818.60
8.1.200.0100.00517.96
8.1.190.0030.00917.94
8.1.180.0090.00418.19
8.1.170.0060.00518.53
8.1.160.0050.00718.77
8.1.150.0090.00419.73
8.1.140.0040.00818.79
8.1.130.0060.00619.34
8.1.120.0060.00617.81
8.1.110.0060.00717.91
8.1.100.0110.00118.53
8.1.90.0040.00717.92
8.1.80.0100.00318.42
8.1.70.0040.00718.07
8.1.60.0050.00817.98
8.1.50.0050.00717.92
8.1.40.0050.00918.11
8.1.30.0040.00818.12
8.1.20.0060.00618.68
8.1.10.0050.00718.04
8.1.00.0090.00417.95
8.0.300.0030.01019.06
8.0.290.0100.00617.19
8.0.280.0150.00519.04
8.0.270.0100.00517.94
8.0.260.0070.00718.14
8.0.250.0100.00517.40
8.0.240.0100.00217.45
8.0.230.0050.00717.44
8.0.220.0080.00317.36
8.0.210.0090.00217.33
8.0.200.0050.00517.49
8.0.190.0090.00317.44
8.0.180.0060.00517.37
8.0.170.0070.00417.41
8.0.160.0050.00617.35
8.0.150.0070.00517.36
8.0.140.0070.00517.30
8.0.130.0070.00515.66
8.0.120.0080.00417.28
8.0.110.0060.00717.27
8.0.100.0070.00417.38
8.0.90.0040.00717.21
8.0.80.0100.00817.17
8.0.70.0050.00517.37
8.0.60.0060.00517.42
8.0.50.0070.00417.32
8.0.30.0070.00717.37
8.0.20.0100.01017.37
8.0.10.0110.00818.50
8.0.00.0110.00718.26
7.4.330.0080.00416.52
7.4.320.0120.00416.92
7.4.300.0160.00716.94
7.4.290.0140.00416.88
7.4.280.0200.00916.96
7.4.270.0190.00816.86
7.4.260.0150.00615.31
7.4.250.0140.00816.92
7.4.240.0090.00616.83
7.4.230.0170.00416.88
7.4.220.0090.00716.92
7.4.210.0120.00816.80
7.4.200.0160.00416.85
7.4.190.0300.00317.43
7.4.180.0130.01317.88
7.4.160.0220.00316.94
7.4.150.0120.00916.87
7.4.140.0120.00917.04
7.4.130.0170.00516.88
7.4.120.0200.00216.96
7.4.110.0170.00816.98
7.4.100.0150.00717.01
7.4.90.0120.01016.91
7.4.80.0170.00716.80
7.4.70.0240.00216.92
7.4.60.0190.00916.88
7.4.50.0150.01216.77
7.4.40.0210.00416.76
7.4.30.0140.00716.97
7.4.20.0220.00016.82
7.4.10.0140.00816.93
7.4.00.0210.00516.86
7.3.330.0130.00516.77
7.3.320.0140.00915.11
7.3.310.0140.00816.67
7.3.300.0110.00516.99
7.3.290.0080.01216.47
7.3.280.0130.01016.78
7.3.270.0210.00616.78
7.3.260.0160.00916.54
7.3.250.0160.00616.72
7.3.240.0210.00716.76
7.3.230.0180.00816.71
7.3.220.0190.00316.54
7.3.210.0200.00416.64
7.3.200.0210.00116.73
7.3.190.0170.00616.54
7.3.180.0190.00816.60
7.3.170.0180.01016.83
7.3.160.0240.00316.56
7.3.150.0210.00816.61
7.3.140.0180.00416.63
7.3.130.0170.00516.57
7.3.120.0120.00916.72
7.3.110.0180.00716.83
7.3.100.0150.01016.44
7.3.90.0170.01116.82
7.3.80.0200.00716.48
7.3.70.0130.00917.25
7.3.60.0200.00916.97
7.3.50.0200.00816.71
7.3.40.0160.00916.73
7.3.30.0160.01116.81
7.3.20.0170.01117.63
7.3.10.0190.00817.60
7.3.00.0270.00517.46

preferences:
32.06 ms | 403 KiB | 5 Q