3v4l.org

run code in 300+ PHP versions simultaneously
<?php $namespaceConstant = "a\\b\\c\\d"; $b = strrpos($namespaceConstant, '\\'); $namespacePart = substr($namespaceConstant, 0, $b); $constantPart = substr($namespaceConstant, $b); var_dump($namespacePart); var_dump($constantPart);

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)
8.3.60.0110.00416.25
8.3.50.0120.00922.04
8.3.40.0140.00018.67
8.3.30.0100.00719.04
8.3.20.0080.00020.34
8.3.10.0070.00021.77
8.3.00.0000.00819.13
8.2.180.0140.00318.43
8.2.170.0070.01322.96
8.2.160.0130.00320.22
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0080.00019.54
8.2.110.0060.00320.51
8.2.100.0000.01117.78
8.2.90.0040.00419.04
8.2.80.0060.00317.97
8.2.70.0000.00817.38
8.2.60.0000.00817.91
8.2.50.0030.00618.07
8.2.40.0000.00818.22
8.2.30.0000.00718.06
8.2.20.0080.00017.59
8.2.10.0000.00718.11
8.2.00.0050.00317.71
8.1.280.0040.01125.92
8.1.270.0080.00018.86
8.1.260.0050.01026.35
8.1.250.0000.00828.09
8.1.240.0100.00023.79
8.1.230.0090.00320.96
8.1.220.0080.00017.79
8.1.210.0040.00418.77
8.1.200.0040.00417.23
8.1.190.0050.00317.23
8.1.180.0080.00018.10
8.1.170.0000.00820.43
8.1.160.0000.00721.95
8.1.150.0050.00318.73
8.1.140.0070.00017.42
8.1.130.0000.00817.75
8.1.120.0040.00417.39
8.1.110.0030.00317.43
8.1.100.0000.00717.41
8.1.90.0030.00317.35
8.1.80.0050.00217.35
8.1.70.0070.00017.35
8.1.60.0040.00417.41
8.1.50.0040.00417.35
8.1.40.0040.00417.42
8.1.30.0000.00917.59
8.1.20.0040.00417.46
8.1.10.0030.00517.29
8.1.00.0000.00717.40
8.0.300.0040.00318.77
8.0.290.0040.00416.75
8.0.280.0000.00718.33
8.0.270.0030.00317.11
8.0.260.0000.00617.18
8.0.250.0000.00716.87
8.0.240.0040.00416.84
8.0.230.0000.00816.78
8.0.220.0080.00016.84
8.0.210.0000.00716.79
8.0.200.0040.00416.75
8.0.190.0080.00016.82
8.0.180.0050.00216.84
8.0.170.0080.00016.89
8.0.160.0040.00416.85
8.0.150.0030.00316.63
8.0.140.0020.00516.71
8.0.130.0000.00513.20
8.0.120.0040.00416.82
8.0.110.0000.00716.83
8.0.100.0000.00716.77
8.0.90.0040.00416.71
8.0.80.0170.00316.73
8.0.70.0050.00316.79
8.0.60.0070.00016.70
8.0.50.0040.00416.86
8.0.30.0060.00516.79
8.0.20.0090.01117.40
8.0.10.0000.00816.91
8.0.00.0130.00516.63
7.4.330.0020.00215.03
7.4.320.0070.00016.45
7.4.300.0060.00016.55
7.4.290.0030.00316.52
7.4.280.0000.00816.57
7.4.270.0030.00316.42
7.4.260.0080.00316.41
7.4.250.0000.00816.52
7.4.240.0030.00416.38
7.4.230.0000.00716.55
7.4.220.0080.01116.49
7.4.210.0090.00616.50
7.4.200.0030.00316.41
7.4.160.0040.01216.40
7.4.150.0090.01217.40
7.4.140.0060.01217.86
7.4.130.0090.00816.48
7.4.120.0050.01316.41
7.4.110.0060.01216.49
7.4.100.0090.00916.47
7.4.90.0110.00516.31
7.4.80.0090.01219.39
7.4.70.0090.00916.21
7.4.60.0120.00416.59
7.4.50.0000.00416.50
7.4.40.0060.00916.53
7.4.30.0110.01116.51
7.4.00.0060.01114.70
7.3.330.0060.00013.07
7.3.320.0140.00313.02
7.3.310.0000.00815.98
7.3.300.0000.00716.20
7.3.290.0100.00616.16
7.3.280.0070.01016.14
7.3.270.0230.03917.40
7.3.260.0100.00716.09
7.3.250.0090.00816.24
7.3.240.0070.01016.18
7.3.230.0100.01016.39
7.3.210.0030.01316.30
7.3.200.0060.01619.39
7.3.190.0030.01716.18
7.3.180.0120.00316.11
7.3.170.0140.00316.54
7.3.160.0060.00916.13
7.3.120.0040.00814.51
7.3.110.0080.01014.91
7.3.100.0090.00614.84
7.3.90.0060.00614.67
7.3.80.0000.01214.75
7.3.70.0110.00614.75
7.3.60.0030.01014.51
7.3.50.0000.01214.41
7.3.40.0080.00414.79
7.3.30.0040.00414.61
7.3.20.0030.01016.55
7.3.10.0070.00716.32
7.3.00.0100.00316.46
7.2.330.0060.01216.32
7.2.320.0140.00916.53
7.2.310.0180.00616.38
7.2.300.0130.00316.59
7.2.290.0150.00816.47
7.2.250.0060.01214.82
7.2.240.0040.01214.88
7.2.230.0040.01115.01
7.2.220.0000.01514.68
7.2.210.0030.01014.93
7.2.200.0070.00714.84
7.2.190.0080.00314.78
7.2.180.0060.00614.94
7.2.170.0070.00414.95
7.2.00.0060.00319.02
7.1.330.0110.00415.70
7.1.320.0140.00015.91
7.1.310.0110.00415.44
7.1.300.0100.01015.70
7.1.290.0110.00015.79
7.1.280.0000.00915.80
7.1.270.0070.00415.39
7.1.260.0030.00515.68
7.1.100.0070.00417.87
7.1.70.0000.00817.14
7.1.60.0070.01819.50
7.1.50.0120.01216.93
7.1.00.0030.07722.48
7.0.200.0030.00716.79
7.0.140.0030.04722.04
7.0.60.0230.07019.86
7.0.50.0070.04017.80
7.0.40.0030.04720.30
7.0.30.0300.08320.21
7.0.20.0400.07020.09
7.0.10.0270.08320.16
7.0.00.0100.07320.01
5.6.280.0000.07720.86
5.6.210.0100.07720.55
5.6.200.0130.07718.12
5.6.190.0030.05720.56
5.6.180.0170.08320.24
5.6.170.0230.06720.48
5.6.160.0000.08320.53
5.6.150.0030.07318.10
5.6.140.0100.03318.16
5.6.130.0100.07718.15
5.6.120.0070.06021.02
5.6.110.0000.04720.95
5.6.100.0070.06720.97
5.6.90.0030.09320.93
5.6.80.0270.06020.37
5.6.70.0200.07320.36
5.5.350.0030.03720.34
5.5.340.0100.08718.02
5.5.330.0070.08020.40
5.5.320.0100.04020.57
5.5.310.0230.06320.26
5.5.300.0070.05317.95
5.5.290.0030.05717.88
5.5.280.0170.06320.67
5.5.270.0070.04320.85
5.5.260.0070.07320.83
5.5.250.0030.06720.68
5.5.240.0200.04720.14
5.4.450.0700.06019.45
5.4.440.0770.05019.13
5.4.430.0800.05719.60
5.4.420.0130.05719.60
5.4.410.0970.05019.36
5.4.400.0130.06018.51
5.4.390.0270.04718.48
5.4.380.0130.06318.79
5.4.370.0130.06018.61
5.4.360.0170.05318.46
5.4.350.0200.05318.68
5.4.340.0170.06018.52
5.4.320.0170.06318.51
5.4.310.0230.05018.68
5.4.300.0270.05318.75
5.4.290.0230.05018.57
5.4.280.0230.05318.66
5.4.270.0200.05718.67
5.4.260.0430.05718.54
5.4.250.0300.04718.55
5.4.240.0300.05318.62
5.4.230.0270.05318.76
5.4.220.0170.06318.47
5.4.210.0230.05718.50
5.4.200.0200.05316.55
5.4.190.0170.05718.54
5.4.180.0130.06018.38
5.4.170.0230.07718.70
5.4.160.0230.05018.51
5.4.150.0100.08318.42
5.4.140.0300.04316.31
5.4.130.0230.04716.17
5.4.120.0300.05016.12
5.4.110.0230.04716.09
5.4.100.0230.07316.25
5.4.90.0070.07016.16
5.4.80.0170.06316.20
5.4.70.0200.05716.21
5.4.60.0200.05016.11
5.4.50.0270.05016.13
5.4.40.0170.05316.19
5.4.30.0370.03716.09
5.4.20.0170.06716.08
5.4.10.0300.04316.13
5.4.00.0100.06015.67
5.3.290.0200.06014.64
5.3.280.0300.04314.66
5.3.270.0230.05314.61
5.3.260.0330.05714.57
5.3.250.0200.06014.60
5.3.240.0130.06014.49
5.3.230.0200.05714.56
5.3.220.0170.05714.63
5.3.210.0170.06714.51
5.3.200.0270.04314.61
5.3.190.0230.05014.58
5.3.180.0130.05714.55
5.3.170.0270.04314.60
5.3.160.0270.04314.49
5.3.150.0100.06014.53
5.3.140.0130.05714.45
5.3.130.0270.06314.47
5.3.120.0230.05314.43
5.3.110.0230.05014.44
5.3.100.0230.04713.92
5.3.90.0330.03713.91
5.3.80.0130.05314.11
5.3.70.0100.06014.03
5.3.60.0170.05313.94
5.3.50.0370.03714.02
5.3.40.0200.05013.89
5.3.30.0170.05013.86
5.3.20.0170.05013.76
5.3.10.0170.05013.61
5.3.00.0230.05713.54
5.2.170.0130.04311.16
5.2.160.0230.03311.12
5.2.150.0070.05011.18
5.2.140.0130.04311.14
5.2.130.0270.03011.13
5.2.120.0170.04011.05
5.2.110.0200.05311.03
5.2.100.0200.04011.12
5.2.90.0200.03311.02
5.2.80.0200.04311.05
5.2.70.0230.04311.23
5.2.60.0130.04310.95
5.2.50.0130.04711.05
5.2.40.0230.03711.01
5.2.30.0200.03711.13
5.2.20.0130.04010.91
5.2.10.0130.04010.89
5.2.00.0200.03310.75
5.1.60.0200.02710.11
5.1.50.0130.03710.13
5.1.40.0130.0379.93
5.1.30.0170.03310.29
5.1.20.0100.04010.32
5.1.10.0100.04010.19
5.1.00.0100.03710.19
5.0.50.0000.0378.50
5.0.40.0100.0278.42
5.0.30.0070.0478.28
5.0.20.0000.0378.39
5.0.10.0070.0308.13
5.0.00.0070.0478.27
4.4.90.0030.0235.96
4.4.80.0070.0235.86
4.4.70.0130.0175.84
4.4.60.0100.0205.91
4.4.50.0030.0275.95
4.4.40.0030.0405.91
4.4.30.0070.0235.91
4.4.20.0100.0205.98
4.4.10.0030.0305.97
4.4.00.0030.0405.91
4.3.110.0070.0205.82
4.3.100.0070.0235.84
4.3.90.0130.0135.80
4.3.80.0100.0305.81
4.3.70.0100.0205.90
4.3.60.0100.0205.82
4.3.50.0030.0235.79
4.3.40.0070.0335.78
4.3.30.0070.0204.60
4.3.20.0100.0204.53
4.3.10.0070.0204.47
4.3.00.0130.0207.11

preferences:
43.1 ms | 401 KiB | 5 Q