3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'BIT'; debug_zval_dump($a); $b = $a; //$c = &$a; debug_zval_dump($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)
8.3.60.0090.01216.37
8.3.50.0150.00321.06
8.3.40.0150.00018.71
8.3.30.0060.00918.71
8.3.20.0070.00020.20
8.3.10.0000.00821.68
8.3.00.0040.00421.94
8.2.180.0070.01116.50
8.2.170.0140.00022.96
8.2.160.0100.00320.34
8.2.150.0000.00724.18
8.2.140.0040.00424.66
8.2.130.0050.00221.04
8.2.120.0070.00026.35
8.2.110.0090.00019.18
8.2.100.0060.00617.80
8.2.90.0080.00019.21
8.2.80.0000.00917.97
8.2.70.0090.00017.63
8.2.60.0040.00417.80
8.2.50.0000.00818.09
8.2.40.0000.00722.18
8.2.30.0000.00719.35
8.2.20.0070.00017.50
8.2.10.0030.00317.94
8.2.00.0000.00717.98
8.1.280.0140.00425.92
8.1.270.0150.00422.05
8.1.260.0050.00328.09
8.1.250.0040.00428.09
8.1.240.0050.00522.38
8.1.230.0080.00317.64
8.1.220.0030.00617.74
8.1.210.0000.00818.77
8.1.200.0000.00817.23
8.1.190.0000.00817.10
8.1.180.0030.00518.10
8.1.170.0040.00418.52
8.1.160.0040.00420.65
8.1.150.0030.00620.71
8.1.140.0040.00419.43
8.1.130.0000.00717.51
8.1.120.0000.00717.36
8.1.110.0080.00017.44
8.1.100.0000.00817.27
8.1.90.0000.00717.27
8.1.80.0000.00817.38
8.1.70.0030.00317.27
8.1.60.0030.00617.54
8.1.50.0040.00417.34
8.1.40.0030.00617.33
8.1.30.0040.00417.49
8.1.20.0000.00717.54
8.1.10.0070.00017.48
8.1.00.0000.00817.27
8.0.300.0040.00418.77
8.0.290.0040.00416.75
8.0.280.0050.00218.39
8.0.270.0000.00717.19
8.0.260.0060.00017.10
8.0.250.0000.00716.80
8.0.240.0050.00316.91
8.0.230.0000.00716.92
8.0.220.0040.00416.76
8.0.210.0040.00416.78
8.0.200.0000.00716.74
8.0.190.0000.00816.88
8.0.180.0030.00516.74
8.0.170.0040.00416.75
8.0.160.0000.00716.71
8.0.150.0050.00216.64
8.0.140.0070.00016.74
8.0.130.0030.00313.27
8.0.120.0000.00816.81
8.0.110.0080.00016.86
8.0.100.0030.00516.87
8.0.90.0030.00516.66
8.0.80.0000.01516.77
8.0.70.0070.00016.76
8.0.60.0040.00416.71
8.0.50.0000.00716.88
8.0.30.0130.00417.17
8.0.20.0100.00917.40
8.0.10.0040.00416.89
8.0.00.0090.00916.65
7.4.330.0050.00016.73
7.4.320.0000.00616.40
7.4.300.0080.00016.35
7.4.290.0030.00316.57
7.4.280.0030.00516.50
7.4.270.0070.00016.45
7.4.260.0000.00716.41
7.4.250.0000.00716.35
7.4.240.0040.00416.54
7.4.230.0030.00316.43
7.4.220.0090.00916.55
7.4.210.0080.00716.55
7.4.200.0000.00716.53
7.4.160.0110.01116.38
7.4.150.0000.01817.40
7.4.140.0080.01217.86
7.4.130.0090.00916.42
7.4.120.0050.01316.57
7.4.110.0060.01016.40
7.4.100.0090.01316.55
7.4.90.0140.00416.34
7.4.80.0100.00819.39
7.4.70.0130.00316.44
7.4.60.0120.00316.44
7.4.50.0110.00716.52
7.4.40.0090.01216.50
7.4.30.0120.00616.28
7.4.00.0070.01014.96
7.3.330.0000.00613.14
7.3.320.0040.00413.00
7.3.310.0000.00716.25
7.3.300.0030.00316.22
7.3.290.0030.00316.15
7.3.280.0090.00716.17
7.3.270.0100.00717.40
7.3.260.0100.00716.39
7.3.250.0090.00916.37
7.3.240.0110.00616.39
7.3.230.0140.00316.48
7.3.210.0080.00816.50
7.3.200.0070.01019.39
7.3.190.0120.00916.29
7.3.180.0080.01216.09
7.3.170.0070.01516.46
7.3.160.0060.01116.57
7.2.330.0140.00316.38
7.2.320.0120.00616.43
7.2.310.0060.01016.08
7.2.300.0130.00316.18
7.2.290.0130.00316.55
7.2.60.0070.00716.59
7.2.00.0070.00719.47
7.1.200.0060.00615.62
7.1.100.0090.00617.75
7.1.70.0050.00217.07
7.1.60.0110.01419.40
7.1.50.0100.01016.86
7.1.00.0070.07322.46
7.0.200.0100.00616.79
7.0.60.0200.08321.73
7.0.50.0070.04017.66
7.0.40.0070.07020.23
7.0.30.0330.06020.10
7.0.20.0270.08720.13
7.0.10.0000.10020.05
7.0.00.0000.04320.01
5.6.280.0030.05320.97
5.6.210.0100.07720.54
5.6.200.0030.04318.09
5.6.190.0030.04720.43
5.6.180.0030.07320.43
5.6.170.0270.03320.33
5.6.160.0170.06320.46
5.6.150.0100.07018.13
5.6.140.0100.03718.11
5.6.130.0070.06018.21
5.6.120.0000.04720.98
5.6.110.0000.08321.10
5.6.100.0130.08021.00
5.6.90.0130.04721.02
5.6.80.0170.06720.52
5.5.350.0230.07320.48
5.5.340.0130.07317.95
5.5.330.0070.06720.42
5.5.320.0300.06020.34
5.5.310.0270.07720.17
5.5.300.0030.04018.01
5.5.290.0130.07717.90
5.5.280.0100.04720.65
5.5.270.0100.08720.96
5.5.260.0030.06020.86
5.5.250.0130.07720.48
5.5.240.0170.08020.15

preferences:
44.46 ms | 401 KiB | 5 Q