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run code in 300+ PHP versions simultaneously
<?php function function_name(){} class C{ static function m(){} } $f = function(){}; var_dump(is_callable('function_name')); var_dump(is_callable(function(){})); var_dump(is_callable(array('C','m'))); var_dump(is_callable(array(new C(),'m'))); var_dump(is_callable($f));

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)
8.3.120.0060.00318.90
8.3.110.0030.00616.62
8.3.100.0070.01316.39
8.3.90.0050.00326.77
8.3.80.0050.00516.63
8.3.70.0070.00716.58
8.3.60.0090.00618.43
8.3.50.0040.01119.83
8.3.40.0100.01021.86
8.3.30.0120.00618.42
8.3.20.0070.01124.18
8.3.10.0130.00624.66
8.3.00.0080.00026.16
8.2.240.0060.00316.84
8.2.230.0080.00020.94
8.2.220.0060.00324.06
8.2.210.0100.01026.77
8.2.200.0100.00018.16
8.2.190.0090.01218.29
8.2.180.0120.00325.92
8.2.170.0130.01019.04
8.2.160.0040.01122.96
8.2.150.0070.01025.66
8.2.140.0070.01324.66
8.2.130.0050.00326.16
8.2.120.0090.00926.16
8.2.110.0100.00019.38
8.2.100.0000.01217.91
8.2.90.0030.00517.75
8.2.80.0080.00017.97
8.2.70.0000.00817.50
8.2.60.0050.00317.50
8.2.50.0040.00417.98
8.2.40.0040.00418.16
8.2.30.0040.00418.06
8.2.20.0020.00520.34
8.2.10.0040.00418.17
8.2.00.0000.00719.21
8.1.300.0040.00416.22
8.1.290.0070.00730.84
8.1.280.0160.00725.92
8.1.270.0030.00623.99
8.1.260.0070.01026.35
8.1.250.0060.00328.09
8.1.240.0180.00322.19
8.1.230.0040.00718.88
8.1.220.0040.00417.80
8.1.210.0000.00818.77
8.1.200.0060.00317.13
8.1.190.0090.00017.35
8.1.180.0000.00818.10
8.1.170.0000.00717.62
8.1.160.0000.00818.77
8.1.150.0000.00718.52
8.1.140.0000.00817.49
8.1.130.0030.00318.93
8.1.120.0030.00317.51
8.1.110.0030.00517.36
8.1.100.0030.00417.49
8.1.90.0040.00417.50
8.1.80.0000.00817.38
8.1.70.0080.00817.26
8.1.60.0130.00517.58
8.1.50.0090.01017.49
8.1.40.0130.00717.46
8.1.30.0140.00517.53
8.1.20.0160.00317.62
8.1.10.0130.00417.60
8.1.00.0090.00717.47
8.0.300.0090.00018.77
8.0.290.0000.00816.63
8.0.280.0070.00018.49
8.0.270.0030.00316.84
8.0.260.0040.00418.32
8.0.250.0070.00016.92
8.0.240.0000.00816.84
8.0.230.0070.00016.92
8.0.220.0020.00516.91
8.0.210.0080.00416.76
8.0.200.0100.00316.71
8.0.190.0070.00716.70
8.0.180.0030.00916.74
8.0.170.0080.00516.78
8.0.160.0090.00616.74
8.0.150.0110.00416.82
8.0.140.0130.00316.84
8.0.130.0130.00216.82
8.0.120.0140.00216.85
8.0.110.0110.00416.88
8.0.100.0050.01116.80
8.0.90.0130.00316.86
8.0.80.0110.00216.80
8.0.70.0120.00016.92
8.0.60.0060.01116.91
8.0.50.0160.00016.87
8.0.30.0080.00816.73
8.0.20.0090.00216.95
8.0.10.0150.00016.97
7.4.330.0020.00215.55
7.4.320.0030.00316.50
7.4.300.0090.00316.58
7.4.290.0110.00416.35
7.4.280.0090.00916.34
7.4.270.0140.00316.60
7.4.260.0140.00316.44
7.4.250.0130.00516.49
7.4.240.0080.00516.34
7.4.230.0140.00516.43
7.4.220.0120.00316.49
7.4.210.0110.00416.55
7.4.200.0100.00516.56
7.4.190.0110.00416.58
7.4.180.0100.00316.61
7.4.160.0030.01016.43
7.4.150.0020.00716.39
7.4.140.0060.00316.26
7.4.130.0040.00716.39
7.4.120.0070.00416.04
7.4.110.0030.00716.13
7.4.100.0080.00416.46
7.4.90.0050.00516.27
7.4.80.0100.00016.21
7.4.70.0030.00716.41
7.4.60.0070.00316.37
7.4.50.0050.00516.26
7.4.40.0030.00816.24
7.4.30.0060.00616.46
7.4.20.0090.00016.42
7.4.10.0080.00416.44
7.4.00.0040.01116.43

preferences:
27.61 ms | 403 KiB | 5 Q