3v4l.org

run code in 300+ PHP versions simultaneously
<?php $psr4 = array( 'my\\first\\ns\\prefix\\' => 0, 'my\\second\\ns\\prefix\\' => 0, 'my\\third\\ns\prefix' => 0, ); foreach ($psr4 as $prefix => &$v) { $v = strlen($prefix); } $classes = array( 'my\\third\\ns\\prefix\\subns\\class', 'another\\ns\\prefix\\subns\\class', ); for ($i = 0; $i < 10000; $i++) { foreach ($classes as $class) { foreach ($psr4 as $prefix => $length) { if (!strncmp($class, $prefix, $length)) { //echo "$class -> $prefix\n"; break; } } } }

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)
8.3.70.0160.00318.55
8.3.60.0100.00718.43
8.3.50.0140.00822.05
8.3.40.0070.01018.59
8.3.30.0040.01419.00
8.3.20.0100.00019.90
8.3.10.0030.00621.95
8.3.00.0030.00719.38
8.2.190.0150.00316.58
8.2.180.0130.01316.75
8.2.170.0040.01422.96
8.2.160.0100.01020.38
8.2.150.0050.00524.18
8.2.140.0100.00024.66
8.2.130.0030.00626.16
8.2.120.0060.00319.36
8.2.110.0030.01321.08
8.2.100.0040.01117.78
8.2.90.0040.00719.17
8.2.80.0040.00717.97
8.2.70.0000.01117.50
8.2.60.0040.00817.80
8.2.50.0070.00418.07
8.2.40.0000.01019.85
8.2.30.0030.00718.03
8.2.20.0000.01117.59
8.2.10.0030.00717.99
8.2.00.0030.00717.69
8.1.280.0090.01225.92
8.1.270.0070.00418.87
8.1.260.0050.00526.35
8.1.250.0000.00928.09
8.1.240.0060.00622.24
8.1.230.0070.00720.73
8.1.220.0000.01017.76
8.1.210.0070.00718.77
8.1.200.0100.00317.35
8.1.190.0040.00817.23
8.1.180.0060.00618.10
8.1.170.0000.01120.49
8.1.160.0030.00722.07
8.1.150.0030.00718.79
8.1.140.0030.00717.36
8.1.130.0060.00317.89
8.1.120.0000.01017.45
8.1.110.0030.00717.47
8.1.100.0070.00317.50
8.1.90.0030.00717.40
8.1.80.0070.00317.36
8.1.70.0070.00417.50
8.1.60.0060.00617.61
8.1.50.0030.01017.49
8.1.40.0000.01117.53
8.1.30.0030.01017.51
8.1.20.0030.00917.56
8.1.10.0000.01117.48
8.1.00.0030.00917.33
8.0.300.0030.00718.77
8.0.290.0080.00316.75
8.0.280.0030.00618.36
8.0.270.0090.00317.25
8.0.260.0030.00717.23
8.0.250.0070.00316.96
8.0.240.0030.00716.84
8.0.230.0000.01016.94
8.0.220.0030.00616.84
8.0.210.0030.00616.92
8.0.200.0030.00616.91
8.0.190.0030.00916.95
8.0.180.0060.00616.84
8.0.170.0090.00616.88
8.0.160.0080.00316.88
8.0.150.0000.01116.71
8.0.140.0040.00716.80
8.0.130.0060.00613.28
8.0.120.0090.00316.80
8.0.110.0030.00916.81
8.0.100.0040.00816.86
8.0.90.0000.01216.95
8.0.80.0000.02216.93
8.0.70.0040.00716.88
8.0.60.0060.00616.95
8.0.50.0030.00816.75
8.0.30.0090.02116.94
8.0.20.0110.01417.40
8.0.10.0030.00916.84
8.0.00.0050.01916.65
7.4.330.0080.00315.03
7.4.320.0030.00616.63
7.4.300.0060.00316.59
7.4.290.0000.01116.42
7.4.280.0040.00816.49
7.4.270.0000.01116.48
7.4.260.0040.00816.55
7.4.250.0060.00616.51
7.4.240.0050.00616.48
7.4.230.0000.01116.70
7.4.220.0090.01516.57
7.4.210.0110.01116.52
7.4.200.0040.00716.59
7.4.160.0100.01016.45
7.4.150.0130.01317.40
7.4.140.0250.01917.86
7.4.130.0120.01416.51
7.4.120.0100.01216.51
7.4.110.0130.01316.50
7.4.100.0070.02316.39
7.4.90.0030.02016.47
7.4.80.0060.01819.39
7.4.70.0030.01916.52
7.4.60.0090.01416.45
7.4.50.0000.00916.53
7.4.40.0130.00816.50
7.4.30.0100.01316.32
7.4.00.0030.02014.82
7.3.330.0030.00613.23
7.3.320.0120.00613.22
7.3.310.0040.00816.31
7.3.300.0080.00316.32
7.3.290.0030.00816.17
7.3.280.0080.01916.38
7.3.270.0160.01017.40
7.3.260.0100.01316.36
7.3.250.0150.01616.45
7.3.240.0090.01916.32
7.3.230.0120.01916.54
7.3.210.0110.01116.67
7.3.200.0040.02119.39
7.3.190.0090.01316.24
7.3.180.0070.01416.48
7.3.170.0060.02216.42
7.3.160.0030.02116.30
7.3.10.0080.01216.77
7.3.00.0000.02016.75
7.2.330.0100.01316.55
7.2.320.0100.02016.74
7.2.310.0060.01616.68
7.2.300.0110.01116.64
7.2.290.0100.01316.52
7.2.130.0030.01516.86
7.2.120.0130.01016.64
7.2.110.0060.01616.76
7.2.100.0060.01016.96
7.2.90.0070.01116.75
7.2.80.0030.01317.01
7.2.70.0000.01916.64
7.2.60.0030.01716.93
7.2.50.0040.01416.96
7.2.40.0030.01716.73
7.2.30.0040.01916.84
7.2.20.0060.01016.75
7.2.10.0060.01316.69
7.2.00.0070.01518.10
7.1.250.0100.01915.82
7.1.100.0000.01618.08
7.1.70.0030.02417.23
7.1.60.0070.01419.50
7.1.50.0100.02916.76
7.1.00.0070.08722.40
7.0.200.0070.01414.82
7.0.140.0000.08022.09
7.0.100.0070.08020.00
7.0.90.0300.08319.88
7.0.80.0230.09019.96
7.0.70.0070.08020.00
7.0.60.0230.09019.92
7.0.50.0200.06320.31
7.0.40.0030.05020.04
7.0.30.0000.06320.11
7.0.20.0130.08020.13
7.0.10.0100.08020.14
7.0.00.0130.04720.07
5.6.280.0030.09720.80
5.6.250.0070.07320.63
5.6.240.0070.09020.51
5.6.230.0030.08720.54
5.6.220.0030.05320.54
5.6.210.0070.05720.75
5.6.200.0100.05321.14
5.6.190.0100.08720.94
5.6.180.0200.07721.03
5.6.170.0030.09321.05
5.6.160.0030.10721.10
5.6.150.0030.09721.08
5.6.140.0070.05321.13
5.6.130.0030.05321.10
5.6.120.0000.07720.95
5.6.110.0100.09720.96
5.6.100.0130.08321.04
5.6.90.0100.09321.10
5.6.80.0030.10020.39
5.6.70.0170.09020.43
5.6.60.0030.07720.45
5.6.50.0030.09320.52
5.6.40.0070.10020.43
5.6.30.0070.09020.30
5.6.20.0100.08720.31
5.6.10.0030.05320.43
5.6.00.0100.10020.45
5.5.380.0070.11020.50
5.5.370.0100.05320.40
5.5.360.0070.07320.39
5.5.350.0070.05320.39
5.5.340.0100.09020.73
5.5.330.0170.08320.73
5.5.320.0030.06020.73
5.5.310.0030.11020.73
5.5.300.0170.07020.88
5.5.290.0100.09020.89
5.5.280.0100.10720.80
5.5.270.0070.07320.88
5.5.260.0000.11720.75
5.5.250.0030.09720.61
5.5.240.0030.09320.02
5.5.230.0070.10320.25
5.5.220.0130.10320.20
5.5.210.0070.10020.21
5.5.200.0130.09320.17
5.5.190.0170.09320.24
5.5.180.0100.09720.25
5.5.160.0130.08720.15
5.5.150.0100.08720.27
5.5.140.0100.09320.21
5.5.130.0130.09719.98
5.5.120.0100.10020.12
5.5.110.0070.10020.10
5.5.100.0030.09719.94
5.5.90.0070.10020.17
5.5.80.0030.07020.00
5.5.70.0070.09720.09
5.5.60.0070.08720.05
5.5.50.0170.09320.12
5.5.40.0200.08020.13
5.5.30.0170.09020.03
5.5.20.0100.06720.08
5.5.10.0000.06020.02
5.5.00.0000.06020.02
5.4.450.0100.10019.45
5.4.440.0030.06719.39
5.4.430.0070.05319.24
5.4.420.0200.07319.31
5.4.410.0100.05018.98
5.4.400.0100.09719.11
5.4.390.0070.11019.23
5.4.380.0100.09719.06
5.4.370.0070.10319.00
5.4.360.0000.10718.97
5.4.350.0070.10019.04
5.4.340.0030.10018.96
5.4.320.0070.08319.09
5.4.310.0100.06318.90
5.4.300.0100.06319.14
5.4.290.0000.06318.79
5.4.280.0170.09319.10
5.4.270.0230.06318.90
5.4.260.0070.10718.81
5.4.250.0070.09719.16
5.4.240.0070.09318.96
5.4.230.0030.10018.81
5.4.220.0030.10719.22
5.4.210.0130.08319.11
5.4.200.0070.08319.13
5.4.190.0070.09019.09
5.4.180.0030.06319.11
5.4.170.0070.05018.80
5.4.160.0000.04719.11
5.4.150.0000.06719.13
5.4.140.0100.04716.31
5.4.130.0100.04316.27
5.4.120.0070.05316.30
5.4.110.0000.05316.43
5.4.100.0030.05316.22
5.4.90.0130.06316.39
5.4.80.0070.04716.20
5.4.70.0000.05716.38
5.4.60.0070.04316.33
5.4.50.0130.06716.18
5.4.40.0070.04716.24
5.4.30.0070.06016.23
5.4.20.0100.04316.20
5.4.10.0030.06016.36
5.4.00.0070.05015.65
5.3.290.0070.09014.52
5.3.280.0100.09714.58
5.3.270.0030.05714.43
5.3.260.0000.06014.46
5.3.250.0070.04714.58
5.3.240.0070.05014.62
5.3.230.0030.05314.57
5.3.220.0070.05014.55
5.3.210.0030.06014.39
5.3.200.0030.05314.59
5.3.190.0070.05314.53
5.3.180.0030.06014.56
5.3.170.0030.05714.55
5.3.160.0070.09714.41
5.3.150.0030.05314.55
5.3.140.0100.04714.50
5.3.130.0070.05014.55
5.3.120.0070.05014.54
5.3.110.0000.06014.53
5.3.100.0000.05714.02
5.3.90.0030.05314.01
5.3.80.0000.05713.93
5.3.70.0030.05313.95
5.3.60.0030.05013.99
5.3.50.0030.05313.85
5.3.40.0000.05713.93
5.3.30.0000.06713.69
5.3.20.0000.05713.66
5.3.10.0070.05713.61
5.3.00.0030.05313.57
5.2.170.0030.04711.14
5.2.160.0000.07011.18
5.2.150.0000.05010.99
5.2.140.0000.05711.13
5.2.130.0000.05011.16
5.2.120.0000.05011.14
5.2.110.0070.04311.15
5.2.100.0070.08710.94
5.2.90.0100.05011.02
5.2.80.0100.08711.05
5.2.70.0070.09710.94
5.2.60.0030.08010.99
5.2.50.0070.07311.03
5.2.40.0100.08011.00
5.2.30.0030.09010.99
5.2.20.0130.08011.01
5.2.10.0100.07010.91
5.2.00.0070.05710.64
5.1.60.0070.08010.03
5.1.50.0030.0579.98
5.1.40.0070.06710.04
5.1.30.0130.08010.25
5.1.20.0030.08010.36
5.1.10.0070.08710.13
5.1.00.0030.0909.95
5.0.50.0030.0678.55
5.0.40.0030.1178.55
5.0.30.0030.1008.55
5.0.20.0070.0978.55
5.0.10.0030.0978.55
5.0.00.0030.1008.55
4.4.90.0000.0408.55
4.4.80.0000.0378.55
4.4.70.0000.0238.55
4.4.60.0000.0338.55
4.4.50.0000.0378.55
4.4.40.0030.0508.55
4.4.30.0030.0238.55
4.4.20.0000.0378.55
4.4.10.0100.0238.55
4.4.00.0000.0538.55
4.3.110.0000.0378.55
4.3.100.0000.0338.55
4.3.90.0030.0338.55
4.3.80.0070.0438.55
4.3.70.0030.0338.55
4.3.60.0030.0338.55
4.3.50.0030.0338.55
4.3.40.0030.0508.55
4.3.30.0000.0378.55
4.3.20.0000.0338.55
4.3.10.0030.0338.55
4.3.00.0070.0308.55

preferences:
60.18 ms | 401 KiB | 5 Q