3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [ 'foo' => null ]; var_dump(isset($a['foo'])); $b = new stdClass; $b->foo = null; var_dump(isset($b->foo));

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)
8.3.60.0100.01016.63
8.3.50.0130.00921.99
8.3.40.0140.00318.92
8.3.30.0120.00618.61
8.3.20.0040.00420.34
8.3.10.0030.00523.56
8.3.00.0080.00019.50
8.2.180.0140.00716.38
8.2.170.0180.00022.96
8.2.160.0060.01020.38
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0030.00617.50
8.2.120.0030.00526.35
8.2.110.0040.00420.42
8.2.100.0120.00017.93
8.2.90.0000.00819.02
8.2.80.0040.00417.97
8.2.70.0000.00817.50
8.2.60.0040.00418.00
8.2.50.0030.00518.07
8.2.40.0040.00419.34
8.2.30.0030.00320.60
8.2.20.0080.00017.55
8.2.10.0000.00718.06
8.2.00.0040.00418.06
8.1.280.0100.01025.92
8.1.270.0000.00822.05
8.1.260.0000.00728.09
8.1.250.0060.00628.09
8.1.240.0060.00323.97
8.1.230.0120.00017.66
8.1.220.0000.00917.76
8.1.210.0040.00818.77
8.1.200.0030.00617.23
8.1.190.0000.00817.23
8.1.180.0050.00318.10
8.1.170.0080.00018.63
8.1.160.0070.00021.94
8.1.150.0040.00418.81
8.1.140.0030.00519.41
8.1.130.0040.00417.55
8.1.120.0040.00417.45
8.1.110.0040.00417.33
8.1.100.0040.00717.29
8.1.90.0000.00817.39
8.1.80.0040.00417.42
8.1.70.0040.00417.33
8.1.60.0060.00317.52
8.1.50.0090.00017.33
8.1.40.0040.00417.42
8.1.30.0100.00017.43
8.1.20.0070.00017.54
8.1.10.0000.00717.47
8.1.00.0040.00417.52
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0080.00018.39
8.0.270.0030.00317.16
8.0.260.0000.00617.11
8.0.250.0030.00316.91
8.0.240.0000.00716.76
8.0.230.0000.00716.93
8.0.220.0030.00316.69
8.0.210.0030.00316.88
8.0.200.0000.00716.85
8.0.190.0060.00316.85
8.0.180.0050.00316.87
8.0.170.0000.00716.74
8.0.160.0080.00016.76
8.0.150.0040.00416.78
8.0.140.0040.00416.59
8.0.130.0000.00513.21
8.0.120.0030.00516.85
8.0.110.0020.00516.72
8.0.100.0040.00416.73
8.0.90.0030.00316.71
8.0.80.0110.00416.87
8.0.70.0030.00516.77
8.0.60.0070.00016.94
8.0.50.0070.00016.84
8.0.30.0120.00717.14
8.0.20.0100.00917.40
8.0.10.0030.00316.78
8.0.00.0080.00916.77
7.4.330.0000.00516.71
7.4.320.0070.00016.52
7.4.300.0030.00316.57
7.4.290.0000.00616.42
7.4.280.0040.00416.32
7.4.270.0050.00316.37
7.4.260.0040.00416.40
7.4.250.0000.00816.47
7.4.240.0040.00416.44
7.4.230.0040.00416.56
7.4.220.0110.00516.56
7.4.210.0060.01016.47
7.4.200.0030.00316.28
7.4.160.0060.00916.35
7.4.150.0030.01317.40
7.4.140.0080.01117.86
7.4.130.0120.00516.51
7.4.120.0070.01316.46
7.4.110.0100.00916.43
7.4.100.0090.00916.45
7.4.90.0100.00716.35
7.4.80.0060.01219.39
7.4.70.0110.00716.41
7.4.60.0130.00616.59
7.4.50.0060.00616.38
7.4.40.0080.01116.36
7.4.30.0140.00816.32
7.4.00.0070.00714.75
7.3.330.0000.00613.09
7.3.320.0000.00513.16
7.3.310.0000.00716.39
7.3.300.0000.00716.18
7.3.290.0000.00716.09
7.3.280.0090.00716.31
7.3.270.0130.00317.40
7.3.260.0100.00716.33
7.3.250.0130.00416.34
7.3.240.0110.00616.38
7.3.230.0120.00616.39
7.3.210.0090.00916.27
7.3.200.0060.00916.50
7.3.190.0070.00716.43
7.3.180.0030.01216.52
7.3.170.0100.00616.27
7.3.160.0040.01116.57
7.2.330.0110.00616.77
7.2.320.0100.00716.46
7.2.310.0030.02016.77
7.2.300.0140.00716.55
7.2.290.0030.01416.35
7.2.60.0040.01116.59
7.2.50.0080.00416.79
7.1.200.0030.00715.69
7.1.70.0000.01117.04
7.1.60.0050.00517.28
7.1.50.0000.01116.79
7.1.00.0030.07722.34
7.0.200.0080.00816.46
7.0.60.0130.04020.00
7.0.50.0030.04317.83
7.0.40.0070.04020.27
7.0.30.0300.03320.20
7.0.20.0330.07720.30
7.0.10.0030.09019.99
7.0.00.0030.04320.09
5.6.280.0030.04321.10
5.6.210.0030.07020.71
5.6.200.0100.08018.19
5.6.190.0070.09020.61
5.6.180.0330.05320.65
5.6.170.0170.08320.52
5.6.160.0030.05020.49
5.6.150.0030.08318.19
5.6.140.0170.07318.21
5.6.130.0000.08718.18
5.6.120.0130.07321.14
5.6.110.0000.04321.02
5.6.100.0030.08721.00
5.6.90.0030.08320.97
5.6.80.0070.06020.28
5.5.350.0230.06720.46
5.5.340.0030.07317.96
5.5.330.0000.06720.07
5.5.320.0000.04720.13
5.5.310.0230.04020.24
5.5.300.0030.05717.91
5.5.290.0130.04718.02
5.5.280.0000.04320.68
5.5.270.0070.08020.64
5.5.260.0030.04020.97
5.5.250.0100.08320.77
5.5.240.3870.04020.27

preferences:
40.52 ms | 401 KiB | 5 Q