3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public $x; } $a = new A(); var_dump(isset($a->x)); var_dump(property_exists($a, 'x'));

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)
8.5.10.0090.01116.67
8.5.00.0140.00921.83
8.4.160.0120.00922.03
8.4.150.0030.00014.05
8.4.140.0120.00817.52
8.4.130.0090.00817.84
8.4.120.0020.00620.62
8.4.110.0090.01218.96
8.4.100.0100.01117.84
8.4.90.0130.00819.41
8.4.80.0060.00319.58
8.4.70.0050.00317.90
8.4.60.0130.00817.69
8.4.50.0110.00618.68
8.4.40.0120.00817.59
8.4.30.0130.00720.20
8.4.20.0130.00721.19
8.4.10.0030.00619.38
8.3.290.0120.00920.84
8.3.280.0020.00014.05
8.3.270.0090.01016.68
8.3.260.0150.00416.45
8.3.250.0130.00518.96
8.3.240.0120.00716.26
8.3.230.0050.00416.75
8.3.220.0070.00616.39
8.3.210.0110.00716.41
8.3.200.0070.00916.36
8.3.190.0100.00817.21
8.3.180.0110.00718.74
8.3.170.0140.00416.98
8.3.160.0030.01618.02
8.3.150.0090.00917.11
8.3.140.0110.00416.61
8.3.130.0400.00316.31
8.3.120.0290.01116.38
8.3.110.0300.00316.47
8.3.100.0220.00016.21
8.3.90.0300.00616.30
8.3.80.0330.01316.33
8.3.70.0310.01416.18
8.3.60.0320.01016.21
8.3.50.0400.00616.32
8.3.40.0240.01217.25
8.3.30.0140.00217.40
8.3.20.0140.00317.20
8.3.10.0130.00417.16
8.3.00.0060.01217.41
8.2.300.0100.01118.10
8.2.290.0100.00818.77
8.2.280.0100.00916.71
8.2.270.0070.01316.66
8.2.260.0080.00017.04
8.2.250.0180.00716.52
8.2.240.0210.00516.43
8.2.230.0230.00616.20
8.2.220.0220.01116.56
8.2.210.0280.00916.20
8.2.200.0330.00416.27
8.2.190.0200.01216.64
8.2.180.0210.00916.43
8.2.170.0370.00317.46
8.2.160.0300.01017.34
8.2.150.0350.00717.64
8.2.140.0360.00417.51
8.2.130.0350.00617.46
8.2.120.0370.00917.47
8.2.110.0380.00317.51
8.2.100.0460.00317.39
8.2.90.0390.00017.43
8.2.80.0370.00617.50
8.2.70.0120.00617.36
8.2.60.0230.00617.23
8.2.50.0230.01617.49
8.2.40.0260.01117.42
8.2.30.0250.00617.19
8.2.20.0300.01017.31
8.2.10.0300.01117.38
8.2.00.0270.01017.02
8.1.340.0120.00917.59
8.1.330.0110.00816.18
8.1.320.0100.00915.93
8.1.310.0070.00716.60
8.1.300.0260.00716.18
8.1.290.0260.00516.28
8.1.280.0280.00716.18
8.1.270.0280.00916.96
8.1.260.0270.00717.68
8.1.250.0330.00717.22
8.1.240.0280.00717.23
8.1.230.0320.00317.22
8.1.220.0250.01017.27
8.1.210.0250.00417.09
8.1.200.0140.00317.25
8.1.190.0130.00317.01
8.1.180.0250.01116.95
8.1.170.0250.00916.66
8.1.160.0270.00817.24
8.1.150.0270.00917.07
8.1.140.0590.00016.97
8.1.130.0350.00317.13
8.1.120.0290.00617.24
8.1.110.0250.00917.18
8.1.100.0340.00417.20
8.1.90.0320.00417.27
8.1.80.0240.01017.16
8.1.70.0250.00917.09
8.1.60.0310.00717.28
8.1.50.0240.01417.23
8.1.40.0340.00417.21
8.1.30.0290.00617.34
8.1.20.0320.01117.11
8.1.10.0240.01517.43
8.1.00.0230.00817.11

preferences:
35.27 ms | 403 KiB | 5 Q