3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $b = 2; var_export(isset($a, $b)); echo "\n"; var_export(isset($b, $c)); echo "\n"; var_export(isset($c, $d));

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)
8.5.00.0060.00619.73
8.4.150.0020.00014.05
8.4.140.0130.00717.16
8.4.130.0130.00717.48
8.4.120.0070.01320.59
8.4.110.0150.00518.48
8.4.100.0070.00617.63
8.4.90.0140.00620.44
8.4.80.0030.00620.50
8.4.70.0050.00318.79
8.4.60.0110.01019.02
8.4.50.0130.00718.40
8.4.40.0110.01119.45
8.4.30.0060.00318.79
8.4.20.0100.01026.00
8.4.10.0030.00623.77
8.3.280.0130.00618.36
8.3.270.0090.01016.15
8.3.260.0130.00516.73
8.3.250.0140.00518.61
8.3.240.0120.00716.41
8.3.230.0120.00716.82
8.3.220.0090.00318.88
8.3.210.0060.00218.43
8.3.200.0090.00216.48
8.3.190.0110.00716.89
8.3.180.0080.00618.85
8.3.170.0110.00718.84
8.3.160.0180.00017.03
8.3.150.0150.00417.13
8.3.140.0150.00020.80
8.3.130.0050.00318.48
8.3.120.0060.00320.49
8.3.110.0090.00020.94
8.3.100.0070.01024.06
8.3.90.0070.00026.77
8.3.80.0030.00618.31
8.3.70.0190.00316.63
8.3.60.0150.00016.50
8.3.50.0180.00416.73
8.3.40.0100.00319.89
8.3.30.0140.00018.49
8.3.20.0080.00024.18
8.3.10.0070.00024.66
8.3.00.0000.01026.16
8.2.290.0030.00516.82
8.2.280.0130.00820.16
8.2.270.0040.00416.48
8.2.260.0070.01017.12
8.2.250.0070.00316.71
8.2.240.0040.00817.06
8.2.230.0090.00622.58
8.2.220.0000.00837.54
8.2.210.0080.00026.77
8.2.200.0030.00616.50
8.2.190.0040.01116.63
8.2.180.0040.01116.35
8.2.170.0040.01118.85
8.2.160.0070.00722.96
8.2.150.0050.00325.66
8.2.140.0000.00824.66
8.2.130.0030.00626.16
8.2.120.0050.00326.16
8.2.110.0050.00519.39
8.2.100.0080.00317.91
8.2.90.0050.00318.89
8.2.80.0060.00317.97
8.2.70.0000.00917.50
8.2.60.0000.00817.63
8.2.50.0050.00317.63
8.2.40.0080.00817.62
8.2.30.0080.00817.62
8.2.20.0110.00617.62
8.2.10.0130.00317.62
8.2.00.0160.00017.62
8.1.330.0130.00616.07
8.1.320.0110.00816.01
8.1.310.0100.00716.43
8.1.300.0070.00715.98
8.1.290.0060.00330.84
8.1.280.0030.01725.92
8.1.270.0050.00324.66
8.1.260.0000.00726.35
8.1.250.0070.00028.09
8.1.240.0090.00021.12
8.1.230.0080.00417.42
8.1.220.0000.00717.74
8.1.210.0060.00318.77
8.1.200.0030.00517.30
8.1.190.0080.00017.23
8.1.180.0040.00418.10
8.1.170.0090.00617.62
8.1.160.0100.00717.62
8.1.150.0180.00017.62
8.1.140.0190.00017.62
8.1.130.0120.00617.62
8.1.120.0160.00017.62
8.1.110.0100.00717.62
8.1.100.0180.00017.62
8.1.90.0140.00217.62
8.1.80.0080.00817.62
8.1.70.0110.00517.62
8.1.60.0180.00417.62
8.1.50.0150.00317.62
8.1.40.0140.00417.62
8.1.30.0100.01017.62
8.1.20.0100.00717.62
8.1.10.0140.00417.62
8.1.00.0130.00417.62
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0140.00317.62
8.0.270.0090.00917.62
8.0.260.0160.00017.62
8.0.250.0110.00517.62
8.0.240.0120.00417.62
8.0.230.0120.00617.62
8.0.220.0150.00317.62
8.0.210.0140.00517.62
8.0.200.0100.00717.62
8.0.190.0140.00217.62
8.0.180.0120.00617.62
8.0.170.0140.00317.62
8.0.160.0080.00817.62
8.0.150.0160.00017.62
8.0.140.0160.00017.62
8.0.130.0120.00417.62
8.0.120.0120.00417.62
8.0.110.0150.00017.62
8.0.100.0120.00417.62
8.0.90.0170.00017.62
8.0.80.0160.00017.62
8.0.70.0080.00817.62
8.0.60.0080.00817.62
8.0.50.0080.00817.62
8.0.30.0150.00217.62
8.0.20.0080.00817.62
8.0.10.0160.00017.62

preferences:
102.41 ms | 403 KiB | 5 Q