3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(check('a', 'a')); var_dump(check('a', 'A')); var_dump(check('A', 'a')); var_dump(check('A', 'A')); var_dump(check('a', 'b')); var_dump(check('a', 'B')); var_dump(check('A', 'b')); var_dump(check('A', 'B')); function check($a, $b) { return $a !== $b && strtolower($a) === strtolower($b); }

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)
8.3.70.0140.00318.43
8.3.60.0110.01118.36
8.3.50.0110.00418.34
8.3.40.0150.00618.76
8.3.30.0070.01418.45
8.3.20.0160.00323.45
8.3.10.0120.00423.71
8.3.00.0080.00020.80
8.2.190.0110.00416.58
8.2.180.0100.00725.92
8.2.170.0000.01518.86
8.2.160.0100.00322.96
8.2.150.0070.00025.66
8.2.140.0040.00424.66
8.2.130.0090.00026.16
8.2.120.0000.00819.54
8.2.110.0060.00321.13
8.2.100.0060.00917.78
8.2.90.0000.00817.63
8.2.80.0030.00617.97
8.2.70.0080.00017.91
8.2.60.0040.00418.03
8.2.50.0040.00418.10
8.2.40.0070.00019.17
8.2.30.0050.00219.13
8.2.20.0060.00318.00
8.2.10.0000.00819.20
8.2.00.0000.00719.14
8.1.280.0140.00025.92
8.1.270.0050.00324.66
8.1.260.0040.00426.35
8.1.250.0090.00928.09
8.1.240.0120.00017.36
8.1.230.0030.00717.52
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0030.00617.23
8.1.190.0040.00417.13
8.1.180.0110.00018.10
8.1.170.0060.00318.59
8.1.160.0040.00418.82
8.1.150.0030.00518.88
8.1.140.0070.00022.07
8.1.130.0070.00020.15
8.1.120.0000.00817.31
8.1.110.0000.00917.31
8.1.100.0040.00417.42
8.1.90.0050.00217.32
8.1.80.0000.00817.35
8.1.70.0000.00717.43
8.1.60.0030.00617.44
8.1.50.0000.01117.50
8.1.40.0040.00417.52
8.1.30.0040.00417.65
8.1.20.0040.00417.53
8.1.10.0050.00317.46
8.1.00.0070.00017.46
8.0.300.0000.00718.77
8.0.290.0080.00016.73
8.0.280.0040.00418.38
8.0.270.0050.00317.13
8.0.260.0040.00418.30
8.0.250.0000.00716.89
8.0.240.0050.00216.93
8.0.230.0030.00316.78
8.0.220.0000.00716.71
8.0.210.0000.00816.82
8.0.200.0040.00416.87
8.0.190.0040.00416.90
8.0.180.0050.00216.87
8.0.170.0060.00316.84
8.0.160.0040.00416.82
8.0.150.0030.00516.86
8.0.140.0000.00716.86
8.0.130.0040.00413.33
8.0.120.0060.00316.72
8.0.110.0020.00516.71
8.0.100.0000.00716.68
8.0.90.0050.00216.82
8.0.80.0050.01016.86
8.0.70.0000.00816.81
8.0.60.0040.00416.73
8.0.50.0080.00016.73
8.0.30.0110.00617.05
8.0.20.0120.01117.40
8.0.10.0040.00416.79
8.0.00.0090.01316.92
7.4.330.0050.00015.55
7.4.320.0030.00316.57
7.4.300.0000.00716.59
7.4.290.0040.00416.52
7.4.280.0070.00016.56
7.4.270.0000.00816.36
7.4.260.0070.00016.40
7.4.250.0040.00416.38
7.4.240.0050.00316.56
7.4.230.0040.00416.66
7.4.220.0040.00416.25
7.4.210.0080.00716.53
7.4.200.0070.00016.48
7.4.160.0090.00616.52
7.4.140.0120.00917.86
7.4.130.0080.00816.56
7.4.120.0160.00916.66
7.4.110.0090.00916.52
7.4.100.0090.01216.60
7.4.90.0090.00916.57
7.4.80.0070.01319.39
7.4.70.0090.01216.54
7.4.60.0130.00616.52
7.4.50.0070.00216.43
7.4.40.0140.00316.32
7.4.00.0000.01115.00
7.3.330.0000.00513.23
7.3.320.0000.00613.30
7.3.310.0070.00016.41
7.3.300.0030.00316.22
7.3.290.0040.00416.17
7.3.280.0080.01016.30
7.3.260.0090.00816.45
7.3.240.0120.00816.27
7.3.230.0090.00916.45
7.3.210.0090.00916.30
7.3.200.0080.00816.26
7.3.190.0040.01316.38
7.3.180.0120.00416.25
7.3.170.0040.01416.43
7.3.160.0040.01116.36
7.3.00.0560.00314.98
7.2.330.0140.00416.79
7.2.320.0070.01716.34
7.2.310.0070.01016.89
7.2.300.0100.00716.69
7.2.290.0100.01316.45
7.2.130.0980.00915.18
7.2.120.0380.00615.04
7.2.110.0420.01015.09
7.2.100.0510.01015.14
7.2.90.0400.01215.01
7.2.80.0490.00915.23
7.2.70.0470.00714.77
7.2.60.0650.00714.91
7.2.50.0640.00614.84
7.2.40.0550.00415.24
7.2.30.0430.00615.07
7.2.20.0370.00915.03
7.2.10.0500.00615.05
7.2.00.0290.00615.14
7.1.250.0360.00614.13

preferences:
55.92 ms | 401 KiB | 5 Q