3v4l.org

run code in 500+ PHP versions simultaneously
<?php class a {} $a = new a; $b = '\\a'; var_dump($a instanceof $b); var_dump($a instanceof \a); // C is not a constant, but a class name (see use) const object = '\\a'; var_dump($a instanceof object); use a as c; var_dump($a instanceof c); // compile error : unexpected T_CLASS // var_dump($a instanceof a::class); // compile error : unexpected T_CONSTANT_ENCAPS_STRING // var_dump($a instanceof '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)
8.5.70.0080.00718.59
8.5.60.0110.00716.61
8.5.50.0100.00716.53
8.5.30.0080.01117.96
8.5.20.0080.01220.04
8.5.10.0130.00516.82
8.5.00.0120.00920.02
8.4.220.0080.00719.50
8.4.210.0120.00919.49
8.4.180.0150.00621.92
8.4.170.0140.00723.95
8.4.160.0100.01122.17
8.4.150.0070.00316.80
8.4.140.0160.00717.61
8.4.130.0110.00921.97
8.4.120.0150.00520.37
8.4.110.0100.01118.84
8.4.100.0110.01017.56
8.4.90.0120.00817.96
8.4.80.0190.00818.40
8.4.70.0200.00718.55
8.4.60.0350.00717.74
8.4.50.0310.00717.61
8.4.40.0330.00617.57
8.4.30.0370.00617.32
8.4.20.0300.00717.56
8.4.10.0320.01017.31
8.3.310.0050.00718.48
8.3.300.0140.01020.79
8.3.290.0190.00420.81
8.3.280.0120.01018.35
8.3.270.0110.00916.67
8.3.260.0080.00616.42
8.3.250.0140.00518.84
8.3.240.0110.01016.44
8.3.230.0030.00516.74
8.3.220.0160.01016.97
8.3.210.0170.01016.97
8.3.200.0310.00516.97
8.3.190.0300.00316.97
8.3.180.0290.00816.97
8.3.170.0400.00616.97
8.3.160.0250.00516.97
8.3.150.0360.00416.97
8.3.140.0270.00516.97
8.3.130.0170.00416.97
8.3.120.0220.00616.97
8.3.110.0260.00616.97
8.3.100.0500.00716.97
8.3.90.0440.00716.97
8.3.80.0350.00816.97
8.3.70.0390.00916.97
8.3.60.0260.00416.97
8.3.50.0280.00916.97
8.3.40.0280.00717.48
8.3.30.0210.00517.36
8.3.20.0280.00617.20
8.3.10.0330.00717.38
8.3.00.0220.00617.41
8.2.310.0100.01018.10
8.2.300.0090.01220.32
8.2.290.0070.01120.24
8.2.280.0340.00616.97
8.2.270.0350.00716.97
8.2.260.0350.00716.97
8.2.250.0300.00816.97
8.2.240.0230.00416.97
8.2.230.0310.00716.97
8.2.220.0360.00716.97
8.2.210.0330.00616.97
8.2.200.0230.00716.97
8.2.190.0240.00616.97
8.2.180.0240.00616.97
8.2.170.0320.00817.53
8.2.160.0270.00717.55
8.2.150.0150.00517.66
8.2.140.0200.00317.30
8.2.130.0150.00517.62
8.2.120.0320.00617.41
8.2.110.0270.00517.44
8.2.100.0260.00517.45
8.2.90.0370.00617.50
8.2.80.0370.00617.39
8.2.70.0370.00717.32
8.2.60.0220.00417.63
8.2.50.0220.00417.36
8.2.40.0280.00517.44
8.2.30.0210.00517.53
8.2.20.0180.00617.49
8.2.10.0330.00617.50
8.2.00.0290.00817.40
8.1.340.0140.00820.07

preferences:
58.32 ms | 863 KiB | 5 Q