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 < 1000; $i++) { foreach ($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)
8.3.60.0090.00618.44
8.3.50.0090.00618.17
8.3.40.0180.00418.67
8.3.30.0080.00819.10
8.3.20.0080.00020.34
8.3.10.0000.00921.91
8.3.00.0040.00419.27
8.2.180.0120.00618.54
8.2.170.0100.00722.96
8.2.160.0140.00720.30
8.2.150.0030.00524.18
8.2.140.0030.00624.66
8.2.130.0070.00026.16
8.2.120.0040.00419.36
8.2.110.0100.00019.14
8.2.100.0030.00917.63
8.2.90.0040.00419.03
8.2.80.0040.00417.97
8.2.70.0000.01317.36
8.2.60.0060.00317.93
8.2.50.0000.00818.07
8.2.40.0040.00419.82
8.2.30.0000.00717.93
8.2.20.0000.00817.56
8.2.10.0090.00017.98
8.2.00.0030.00617.61
8.1.280.0060.01225.92
8.1.270.0060.00318.86
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0090.00023.98
8.1.230.0090.00317.64
8.1.220.0050.00317.74
8.1.210.0000.00818.77
8.1.200.0050.00517.48
8.1.190.0030.00517.12
8.1.180.0040.00418.10
8.1.170.0060.00320.39
8.1.160.0000.00721.98
8.1.150.0000.00818.95
8.1.140.0000.00817.40
8.1.130.0030.00617.85
8.1.120.0070.00017.48
8.1.110.0040.00417.35
8.1.100.0000.00817.34
8.1.90.0000.00717.35
8.1.80.0040.00417.29
8.1.70.0030.00317.34
8.1.60.0090.00017.57
8.1.50.0000.00817.52
8.1.40.0050.00317.51
8.1.30.0050.00317.55
8.1.20.0000.00817.53
8.1.10.0040.00417.36
8.1.00.0040.00417.46
8.0.300.0000.00718.77
8.0.290.0000.00916.75
8.0.280.0000.00818.48
8.0.270.0040.00417.18
8.0.260.0030.00317.18
8.0.250.0050.00216.94
8.0.240.0070.00016.88
8.0.230.0040.00416.96
8.0.220.0030.00516.79
8.0.210.0050.00216.88
8.0.200.0030.00316.91
8.0.190.0060.00316.96
8.0.180.0040.00416.88
8.0.170.0090.00016.82
8.0.160.0000.00816.88
8.0.150.0000.00816.68
8.0.140.0030.00616.85
8.0.130.0080.00013.29
8.0.120.0060.00316.75
8.0.110.0050.00316.73
8.0.100.0000.00716.93
8.0.90.0040.00417.00
8.0.80.0070.01016.92
8.0.70.0040.00416.73
8.0.60.0000.00816.82
8.0.50.0040.00416.98
8.0.30.0120.00717.19
8.0.20.0130.00717.40
8.0.10.0030.00516.86
8.0.00.0100.01116.87
7.4.330.0030.00315.09
7.4.320.0030.00316.55
7.4.300.0060.00016.44
7.4.290.0050.00316.52
7.4.280.0040.00416.47
7.4.270.0030.00516.60
7.4.260.0040.00416.43
7.4.250.0000.00816.44
7.4.240.0000.00816.50
7.4.230.0040.00416.30
7.4.220.0070.01116.66
7.4.210.0100.00716.48
7.4.200.0050.00216.46
7.4.160.0060.01016.32
7.4.150.0110.00717.40
7.4.140.0090.01217.86
7.4.130.0080.01016.52
7.4.120.0090.00816.57
7.4.110.0030.01716.59
7.4.100.0060.01216.56
7.4.90.0070.01316.36
7.4.80.0070.01619.39
7.4.70.0090.00916.37
7.4.60.0000.01716.46
7.4.50.0000.00916.45
7.4.40.0070.01016.25
7.4.30.0100.00916.38
7.4.00.0070.01114.64
7.3.330.0050.00313.16
7.3.320.0140.00013.08
7.3.310.0000.00716.29
7.3.300.0000.00816.27
7.3.290.0080.00016.30
7.3.280.0030.01516.33
7.3.270.0090.00917.40
7.3.260.0100.00716.52
7.3.250.0070.01516.50
7.3.240.0040.01316.71
7.3.230.0140.01016.39
7.3.210.0070.01016.34
7.3.200.0140.00619.39
7.3.190.0060.01216.42
7.3.180.0100.00916.62
7.3.170.0000.01716.27
7.3.160.0030.01316.41
7.3.10.0080.00816.71
7.3.00.0070.00716.71
7.2.330.0070.01116.52
7.2.320.0140.00316.57
7.2.310.0150.00316.51
7.2.300.0040.01516.77
7.2.290.0090.00916.45
7.2.130.0080.00316.77
7.2.120.0030.01316.97
7.2.110.0030.01016.65
7.2.100.0000.01216.84
7.2.90.0030.01416.93
7.2.80.0100.00716.83
7.2.70.0080.00416.99
7.2.60.0030.01017.05
7.2.50.0000.01416.80
7.2.40.0040.00716.93
7.2.30.0090.00617.05
7.2.20.0030.00716.83
7.2.10.0030.00616.73
7.2.00.0050.00618.04
7.1.250.0060.00615.97
7.1.100.0070.01117.77
7.1.70.0000.01117.28
7.1.60.0040.01119.50
7.1.50.0030.02017.08
7.1.00.0030.08022.33
7.0.200.0510.01114.89
7.0.140.0000.07321.96
7.0.60.0100.07720.05
7.0.50.0070.07317.79
7.0.40.0030.06020.23
7.0.30.0330.07320.12
7.0.20.0230.08320.21
7.0.10.0170.07720.20
7.0.00.0170.07720.02
5.6.280.0070.07020.91
5.6.210.0200.07020.54
5.6.200.0000.04718.08
5.6.190.0000.05020.42
5.6.180.0370.07320.76
5.6.170.0300.07720.44
5.6.160.0030.04720.48
5.6.150.0070.09018.09
5.6.140.0070.07318.21
5.6.130.0100.08318.09
5.6.120.0200.05720.96
5.6.110.0030.08321.07
5.6.100.0130.08021.11
5.6.90.0100.05020.97
5.6.80.0070.08320.38
5.6.70.0370.06720.39
5.5.350.0300.07320.39
5.5.340.0070.09017.99
5.5.330.0070.09020.15
5.5.320.0170.08020.29
5.5.310.0300.06320.41
5.5.300.0000.08017.98
5.5.290.0070.07317.95
5.5.280.0100.04020.76
5.5.270.0070.06020.76
5.5.260.0130.05020.72
5.5.250.0070.07720.79
5.5.240.0000.08720.25
5.4.450.0800.06319.45
5.4.440.0330.06719.55
5.4.430.0130.05319.36
5.4.420.0670.06019.51
5.4.410.0170.07318.89
5.4.400.1000.05018.51
5.4.390.0800.05318.50
5.4.380.1100.08018.64
5.4.370.1330.08018.59
5.4.360.1000.06318.50
5.4.350.1000.07318.56
5.4.340.0970.06018.60
5.4.320.0730.07018.55
5.4.310.0970.06018.51
5.4.300.1400.07718.67
5.4.290.1100.05318.68
5.4.280.1200.06318.67
5.4.270.1100.07018.58
5.4.260.0930.06018.67
5.4.250.0870.08318.52
5.4.240.1030.07018.52
5.4.230.1200.05018.48
5.4.220.1270.06718.73
5.4.210.1270.08318.71
5.4.200.1130.09016.76
5.4.190.1200.07718.68
5.4.180.1100.08318.72
5.4.170.1030.07718.68
5.4.160.1370.05018.50
5.4.150.1030.06318.65
5.4.140.1270.06716.31
5.4.130.1170.05716.26
5.4.120.0970.06016.30
5.4.110.1170.07316.22
5.4.100.1330.05316.21
5.4.90.1400.07016.26
5.4.80.0870.06316.14
5.4.70.1270.06016.23
5.4.60.1270.04016.32
5.4.50.0800.06016.21
5.4.40.0770.08716.27
5.4.30.1270.06016.32
5.4.20.1000.07716.12
5.4.10.1070.06016.13
5.4.00.1030.05315.71
5.3.290.1000.07714.64
5.3.280.1300.06314.66
5.3.270.1130.07314.70
5.3.260.1370.07714.70
5.3.250.1030.06714.70
5.3.240.1100.06314.57
5.3.230.1000.05714.65
5.3.220.1170.05314.55
5.3.210.1130.06014.64
5.3.200.1100.06314.59
5.3.190.1170.06314.57
5.3.180.1100.05714.66
5.3.170.1300.07714.49
5.3.160.1270.06714.59
5.3.150.1200.09014.55
5.3.140.1270.06714.60
5.3.130.1000.07014.46
5.3.120.1370.07714.55
5.3.110.1370.06314.46
5.3.100.0970.05314.04
5.3.90.1070.05314.00
5.3.80.0900.06013.92
5.3.70.1330.05314.11
5.3.60.1000.04714.00
5.3.50.1100.05013.84
5.3.40.0930.06013.92
5.3.30.1100.05713.89
5.3.20.1070.05013.70
5.3.10.1170.06313.69
5.3.00.1170.07713.63
5.2.170.1070.03311.15
5.2.160.0800.07011.20
5.2.150.0830.07311.14
5.2.140.1070.06311.09
5.2.130.1000.04711.07
5.2.120.0870.07311.25
5.2.110.1230.05011.15
5.2.100.0830.04311.08
5.2.90.0870.05011.26
5.2.80.0800.05011.23
5.2.70.0570.05011.13
5.2.60.0970.05311.08
5.2.50.0930.05711.17
5.2.40.0930.04310.93
5.2.30.0800.05011.02
5.2.20.0800.06010.96
5.2.10.0900.05010.95
5.2.00.0900.06010.68
5.1.60.0600.04710.11
5.1.50.0670.04710.11
5.1.40.0670.0479.99
5.1.30.0670.05010.39
5.1.20.0600.05010.40
5.1.10.0600.04010.07
5.1.00.0730.04010.10
5.0.50.0300.0478.58
5.0.40.0230.0378.46
5.0.30.0470.0438.33
5.0.20.0370.0378.30
5.0.10.0400.0478.22
5.0.00.0430.0538.27
4.4.90.0500.0205.82
4.4.80.0470.0235.89
4.4.70.0370.0335.85
4.4.60.0500.0205.87
4.4.50.0330.0275.92
4.4.40.0370.0375.87
4.4.30.0330.0305.88
4.4.20.0370.0235.97
4.4.10.0430.0335.94
4.4.00.0530.0335.93
4.3.110.0370.0275.80
4.3.100.0400.0275.82
4.3.90.0370.0205.79
4.3.80.0370.0475.81
4.3.70.0370.0205.77
4.3.60.0430.0305.91
4.3.50.0370.0305.82
4.3.40.0570.0405.76
4.3.30.0130.0235.33
4.3.20.0230.0275.33
4.3.10.0230.0205.33
4.3.00.0030.0206.91

preferences:
41.03 ms | 400 KiB | 5 Q