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)
8.3.60.0110.00716.63
8.3.50.0070.01421.02
8.3.40.0120.00918.57
8.3.30.0120.00318.72
8.3.20.0070.00020.34
8.3.10.0000.00721.89
8.3.00.0000.00721.96
8.2.180.0090.00616.75
8.2.170.0110.00422.96
8.2.160.0070.00720.38
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00421.02
8.2.120.0000.00726.35
8.2.110.0000.00919.32
8.2.100.0060.00617.80
8.2.90.0040.00419.09
8.2.80.0040.00417.97
8.2.70.0090.00017.63
8.2.60.0000.00817.79
8.2.50.0050.00318.09
8.2.40.0090.00022.32
8.2.30.0030.00619.32
8.2.20.0040.00417.53
8.2.10.0050.00317.91
8.2.00.0000.00717.99
8.1.280.0140.00325.92
8.1.270.0080.00022.14
8.1.260.0080.00028.09
8.1.250.0030.00328.09
8.1.240.0090.00022.29
8.1.230.0060.00617.76
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0030.00717.22
8.1.190.0000.00817.13
8.1.180.0060.00318.10
8.1.170.0040.00418.51
8.1.160.0040.00420.68
8.1.150.0040.00420.45
8.1.140.0030.00619.52
8.1.130.0030.00317.68
8.1.120.0000.00717.29
8.1.110.0050.00217.30
8.1.100.0000.00717.36
8.1.90.0000.00717.45
8.1.80.0040.00417.41
8.1.70.0030.00317.42
8.1.60.0020.00517.53
8.1.50.0040.00417.50
8.1.40.0000.00817.33
8.1.30.0080.00017.66
8.1.20.0030.00517.62
8.1.10.0040.00417.43
8.1.00.0040.00417.36
8.0.300.0070.00018.77
8.0.290.0070.00016.63
8.0.280.0030.00318.27
8.0.270.0000.00717.06
8.0.260.0000.00617.11
8.0.250.0070.00016.83
8.0.240.0070.00016.99
8.0.230.0060.00016.88
8.0.220.0000.00716.82
8.0.210.0040.00416.80
8.0.200.0040.00416.94
8.0.190.0080.00016.86
8.0.180.0000.00716.79
8.0.170.0000.00716.87
8.0.160.0000.00816.83
8.0.150.0030.00316.74
8.0.140.0030.00316.82
8.0.130.0000.00613.25
8.0.120.0000.00816.67
8.0.110.0000.00816.74
8.0.100.0000.00816.82
8.0.90.0000.00716.68
8.0.80.0090.00616.73
8.0.70.0040.00416.79
8.0.60.0050.00316.68
8.0.50.0040.00316.82
8.0.30.0090.00916.89
8.0.20.0120.00517.40
8.0.10.0030.00616.89
8.0.00.0090.00816.72
7.4.330.0000.00616.84
7.4.320.0040.00416.54
7.4.300.0030.00316.43
7.4.290.0000.00716.29
7.4.280.0070.00016.52
7.4.270.0070.00016.58
7.4.260.0030.00316.33
7.4.250.0030.00316.41
7.4.240.0030.00516.36
7.4.230.0000.00616.27
7.4.220.0070.01116.49
7.4.210.0050.01116.42
7.4.200.0070.00016.34
7.4.160.0100.01016.35
7.4.150.0070.01117.40
7.4.140.0110.00717.86
7.4.130.0120.01216.45
7.4.120.0150.00416.35
7.4.110.0140.00916.27
7.4.100.0130.00916.41
7.4.90.0070.01016.37
7.4.80.0100.00719.39
7.4.70.0100.00716.36
7.4.60.0090.00916.38
7.4.50.0040.01116.44
7.4.40.0070.01116.44
7.4.30.0030.01616.38
7.4.00.0000.01715.05
7.3.330.0060.00012.85
7.3.320.0000.00612.98
7.3.310.0030.00316.18
7.3.300.0070.00016.09
7.3.290.0000.00716.23
7.3.280.0080.01116.20
7.3.270.0130.00317.40
7.3.260.0080.01216.02
7.3.240.0090.01016.32
7.3.230.0030.01416.39
7.3.210.0150.00016.13
7.3.200.0060.01619.39
7.3.190.0110.00616.05
7.3.180.0160.00016.10
7.3.170.0090.01316.52
7.3.160.0040.01516.34
7.2.330.0100.00716.54
7.2.320.0060.01216.56
7.2.310.0080.01316.56
7.2.300.0070.01016.13
7.2.290.0140.00316.21
7.2.60.0090.00316.73
7.2.00.0030.01219.13
7.1.200.0110.00415.71
7.1.100.0100.01017.75
7.1.70.0040.00417.12
7.1.60.0120.01219.40
7.1.50.0030.00916.95
7.1.00.0070.07322.32
7.0.200.0040.00416.71
7.0.60.0170.08321.71
7.0.50.0030.04017.80
7.0.40.0070.04319.96
7.0.30.0370.05720.16
7.0.20.0370.07720.21
7.0.10.0100.09020.16
7.0.00.0030.04319.96
5.6.210.0070.08320.50
5.6.200.0000.06718.18
5.6.190.0000.08720.60
5.6.180.0070.06320.43
5.6.170.0100.04720.44
5.6.160.0170.05320.50
5.6.150.0070.05718.21
5.6.140.0000.04318.18
5.6.130.0070.08318.21
5.6.120.0100.06320.98
5.6.110.0100.07720.97
5.6.100.0170.08021.00
5.6.90.0130.08720.97
5.6.80.0030.05020.47
5.5.350.0300.07320.32
5.5.340.0000.06318.00
5.5.330.0130.07020.40
5.5.320.0370.06720.41
5.5.310.0330.06720.29
5.5.300.0030.04018.02
5.5.290.0100.08317.88
5.5.280.0100.04720.97
5.5.270.0000.07320.66
5.5.260.0030.06020.86
5.5.250.0030.08320.45
5.5.240.0270.07020.14

preferences:
52.05 ms | 401 KiB | 5 Q