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 < 2000; $i++) { foreach ($classes as $class) { foreach ($psr4 as $prefix => $length) { if (0 === strpos($class, $prefix)) { //echo "$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)
8.3.40.0110.00418.71
8.3.30.0040.01118.89
8.3.20.0000.00920.20
8.3.10.0060.00321.82
8.3.00.0080.00019.13
8.2.170.0120.00922.96
8.2.160.0060.01220.35
8.2.150.0040.00424.18
8.2.140.0090.00024.66
8.2.130.0040.00426.16
8.2.120.0080.00019.36
8.2.110.0030.00720.94
8.2.100.0080.00417.72
8.2.90.0040.00419.22
8.2.80.0040.00417.97
8.2.70.0090.00017.50
8.2.60.0040.00418.03
8.2.50.0030.00618.07
8.2.40.0030.00619.94
8.2.30.0040.00417.94
8.2.20.0040.00417.63
8.2.10.0030.00618.12
8.2.00.0040.00417.61
8.1.270.0000.00818.83
8.1.260.0000.00726.35
8.1.250.0000.00828.09
8.1.240.0090.00022.10
8.1.230.0060.00620.63
8.1.220.0000.00817.74
8.1.210.0060.00318.77
8.1.200.0030.00717.35
8.1.190.0000.01017.22
8.1.180.0030.00518.10
8.1.170.0080.00020.49
8.1.160.0060.00322.00
8.1.150.0060.00318.80
8.1.140.0060.00317.38
8.1.130.0040.00417.72
8.1.120.0050.00217.46
8.1.110.0040.00417.46
8.1.100.0040.00417.46
8.1.90.0000.00817.45
8.1.80.0030.00517.49
8.1.70.0000.00817.33
8.1.60.0030.00617.57
8.1.50.0030.00617.38
8.1.40.0000.00817.41
8.1.30.0030.00617.66
8.1.20.0050.00517.62
8.1.10.0040.00417.54
8.1.00.0050.00317.34
8.0.300.0000.00818.77
8.0.290.0040.00416.75
8.0.280.0040.00418.44
8.0.270.0000.00817.13
8.0.260.0000.00717.30
8.0.250.0040.00416.96
8.0.240.0000.00816.98
8.0.230.0020.00516.98
8.0.220.0000.00716.88
8.0.210.0040.00416.85
8.0.200.0000.00716.90
8.0.190.0030.00616.94
8.0.180.0040.00416.94
8.0.170.0040.00416.78
8.0.160.0080.00016.97
8.0.150.0030.00516.68
8.0.140.0040.00416.79
8.0.130.0050.00213.26
8.0.120.0000.00816.78
8.0.110.0030.00516.78
8.0.100.0050.00316.95
8.0.90.0000.00816.98
8.0.80.0000.01716.94
8.0.70.0090.00016.71
8.0.60.0000.00816.88
8.0.50.0040.00416.94
8.0.30.0180.00617.19
8.0.20.0110.00817.40
8.0.10.0040.00416.86
8.0.00.0130.00616.78
7.4.330.0060.00315.03
7.4.320.0040.00416.61
7.4.300.0050.00316.50
7.4.290.0000.00816.63
7.4.280.0060.00316.51
7.4.270.0000.00916.45
7.4.260.0040.00416.58
7.4.250.0030.00616.56
7.4.240.0050.00316.58
7.4.230.0040.00416.35
7.4.220.0090.00916.56
7.4.210.0070.01116.63
7.4.200.0040.00416.70
7.4.160.0160.00616.66
7.4.150.0120.00917.40
7.4.140.0110.01117.86
7.4.130.0080.01016.30
7.4.120.0090.01016.38
7.4.110.0110.01416.55
7.4.100.0120.00916.46
7.4.90.0150.00316.40
7.4.80.0270.03419.39
7.4.70.0080.00916.43
7.4.60.0070.01016.42
7.4.50.0000.01016.43
7.4.40.0070.01016.46
7.4.30.0110.01116.50
7.4.00.0060.01214.92
7.3.330.0000.00513.07
7.3.320.0140.00013.07
7.3.310.0000.00916.29
7.3.300.0040.00416.18
7.3.290.0040.00416.36
7.3.280.0080.00916.33
7.3.270.0140.01117.40
7.3.260.0090.00916.49
7.3.250.0090.01116.47
7.3.240.0140.00516.50
7.3.230.0120.01216.51
7.3.210.0140.00316.27
7.3.200.0070.01719.39
7.3.190.0070.01016.54
7.3.180.0070.01016.53
7.3.170.0120.00616.33
7.3.160.0070.01016.61
7.3.10.0180.01116.04
7.3.00.0140.01416.35
7.2.330.0110.00716.41
7.2.320.0140.00316.44
7.2.310.0090.01216.79
7.2.300.0030.01516.54
7.2.290.0150.00616.52
7.2.130.0160.01116.98
7.2.120.0240.00416.58
7.2.110.0150.00816.59
7.2.100.0150.00716.29
7.2.90.0170.01016.49
7.2.80.0130.00916.66
7.2.70.0160.00616.49
7.2.60.0100.01016.83
7.2.50.0190.00816.20
7.2.40.0130.00616.71
7.2.30.0150.00716.61
7.2.20.0130.01016.61
7.2.10.0140.00416.59
7.2.00.0120.00517.92
7.1.250.0140.01115.58
7.1.100.0070.00717.93
7.1.70.0060.01217.34
7.1.60.0030.01319.50
7.1.50.0110.01116.91
7.1.00.0030.08022.57
7.0.200.0060.00615.06
7.0.140.0000.07321.98
7.0.60.0170.07319.94
7.0.50.0070.05017.70
7.0.40.0100.08320.06
7.0.30.0200.04020.02
7.0.20.0400.07720.19
7.0.10.0300.03320.20
7.0.00.0100.03720.01
5.6.280.0000.08021.04
5.6.210.0030.04020.62
5.6.200.0030.08718.19
5.6.190.0030.09320.41
5.6.180.0270.07720.77
5.6.170.0400.04320.42
5.6.160.0030.09020.44
5.6.150.0100.07018.18
5.6.140.0030.07318.12
5.6.130.0030.05718.10
5.6.120.0130.08020.99
5.6.110.0000.09720.95
5.6.100.0130.03321.13
5.6.90.0030.04321.07
5.6.80.0030.04020.37
5.6.70.3730.03720.39
5.5.350.0130.07720.30
5.5.340.0100.07717.90
5.5.330.0100.08320.40
5.5.320.0300.08020.13
5.5.310.0330.07320.17
5.5.300.0070.09017.88
5.5.290.0130.08317.95
5.5.280.0070.08020.86
5.5.270.0070.05320.86
5.5.260.0030.09320.73
5.5.250.0000.08020.78
5.5.240.0070.05320.23
5.4.450.0230.06019.11
5.4.440.1000.05319.51
5.4.430.0930.06019.46
5.4.420.0030.06319.44
5.4.410.0100.06018.89
5.4.400.1100.05718.64
5.4.390.0970.06318.52
5.4.380.2700.05318.52
5.4.370.1230.05318.70
5.4.360.1300.05718.52
5.4.350.2370.06718.64
5.4.340.2300.05718.52
5.4.320.2830.07018.72
5.4.310.1430.08718.61
5.4.300.1270.06318.71
5.4.290.2130.06318.67
5.4.280.1230.06018.70
5.4.270.1270.06718.73
5.4.260.1130.05718.59
5.4.250.2170.07318.66
5.4.240.1130.06018.59
5.4.230.3000.07318.63
5.4.220.1170.06318.77
5.4.210.1170.06718.57
5.4.200.2200.05316.48
5.4.190.0970.07018.55
5.4.180.1130.06018.48
5.4.170.2130.05718.76
5.4.160.1230.05318.47
5.4.150.1530.07718.54
5.4.140.2300.05316.18
5.4.130.1230.05716.06
5.4.120.1070.06016.15
5.4.110.2430.05716.18
5.4.100.1170.06316.21
5.4.90.1100.06316.34
5.4.80.3230.05716.23
5.4.70.1100.06016.10
5.4.60.2330.05716.14
5.4.50.1230.05316.23
5.4.40.2530.06316.10
5.4.30.0070.05316.14
5.4.20.0030.06316.03
5.4.10.0200.05716.19
5.4.00.0630.06015.61
5.3.290.1200.06014.56
5.3.280.1100.06314.64
5.3.270.1100.05314.54
5.3.260.1270.06314.59
5.3.250.1030.07314.70
5.3.240.1230.04714.68
5.3.230.1200.05714.59
5.3.220.1170.06014.57
5.3.210.1230.06314.46
5.3.200.1130.05314.49
5.3.190.1300.06014.48
5.3.180.1230.05314.60
5.3.170.1270.06014.64
5.3.160.1230.06014.53
5.3.150.3000.06014.59
5.3.140.1200.06314.52
5.3.130.1370.08314.46
5.3.120.1500.06714.57
5.3.110.1170.06014.46
5.3.100.1200.06014.04
5.3.90.1230.05714.09
5.3.80.1170.06014.01
5.3.70.1170.06013.97
5.3.60.2700.05313.99
5.3.50.1400.06713.92
5.3.40.3200.06013.92
5.3.30.1270.05313.90
5.3.20.1170.06713.68
5.3.10.2570.05713.62
5.3.00.1300.05713.63
5.2.170.1070.05311.09
5.2.160.1070.04711.20
5.2.150.0970.04711.28
5.2.140.2370.05011.13
5.2.130.0930.04711.06
5.2.120.2270.04311.05
5.2.110.1070.05311.08
5.2.100.1000.04711.16
5.2.90.2630.05711.25
5.2.80.0900.05311.00
5.2.70.0870.06011.08
5.2.60.3470.05710.96
5.2.50.1130.06011.05
5.2.40.0930.04011.05
5.2.30.0830.04010.91
5.2.20.0730.04310.99
5.2.10.2200.05010.83
5.2.00.0800.05010.85
5.1.60.0800.04310.15
5.1.50.2270.0379.97
5.1.40.0770.04710.09
5.1.30.0930.04010.38
5.1.20.0800.03310.33
5.1.10.2700.05010.10
5.1.00.0870.03010.20
5.0.50.0400.0408.58
5.0.40.0430.0378.45
5.0.30.0370.0608.33
5.0.20.1830.0378.24
5.0.10.0330.0408.20
5.0.00.0400.0738.29
4.4.90.0430.0305.92
4.4.80.0470.0235.89
4.4.70.0400.0205.93
4.4.60.0370.0275.94
4.4.50.0370.0235.88
4.4.40.0330.0405.86
4.4.30.1800.0235.92
4.4.20.0500.0275.93
4.4.10.0430.0275.94
4.4.00.0370.0375.90
4.3.110.0300.0275.86
4.3.100.0300.0235.80
4.3.90.0470.0205.79
4.3.80.0430.0405.87
4.3.70.0500.0235.77
4.3.60.0470.0235.84
4.3.50.0370.0305.87
4.3.40.0330.0435.75
4.3.30.0230.0234.56
4.3.20.0200.0204.54
4.3.10.0170.0234.57
4.3.00.0130.0206.91

preferences:
50.25 ms | 400 KiB | 5 Q