3v4l.org

run code in 300+ PHP versions simultaneously
<?php $match = 'today'; $n = 2; for ($pos = strlen($match) - $n; $pos >= 0; --$pos) { $nGrams[] = substr($match, $pos, $n); } var_export($nGrams);

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)
8.4.130.0100.00417.58
8.4.120.0090.00120.35
8.4.110.0090.01022.27
8.4.100.0050.00417.68
8.4.90.0130.00719.31
8.4.80.0120.00817.56
8.4.70.0100.00417.79
8.4.60.0100.01017.66
8.4.50.0080.01320.35
8.4.40.0080.01120.19
8.4.30.0100.01020.59
8.4.20.0060.00619.81
8.4.10.0030.00617.61
8.3.260.0140.00616.52
8.3.250.0040.00618.85
8.3.240.0050.00316.49
8.3.230.0110.00316.27
8.3.220.0100.00817.04
8.3.210.0110.00816.60
8.3.200.0170.00316.63
8.3.190.0100.00816.64
8.3.180.0110.00816.47
8.3.170.0120.00417.17
8.3.160.0110.00420.26
8.3.150.0110.00717.36
8.3.140.0110.00716.56
8.3.130.0040.00418.38
8.3.120.0050.00818.87
8.3.110.0040.00418.18
8.3.100.0060.00324.06
8.3.90.0060.00326.77
8.3.80.0090.00019.36
8.3.70.0060.01216.50
8.3.60.0090.00918.27
8.3.50.0060.01123.55
8.3.40.0040.01518.55
8.3.30.0040.01118.58
8.3.20.0040.00421.78
8.3.10.0140.00320.22
8.3.00.0080.00021.77
8.2.290.0100.01020.59
8.2.280.0060.00218.23
8.2.270.0090.00617.34
8.2.260.0090.00016.47
8.2.250.0000.00816.33
8.2.240.0000.00917.05
8.2.230.0060.00320.94
8.2.220.0000.00937.54
8.2.210.0000.01426.77
8.2.200.0030.00618.88
8.2.190.0060.00916.58
8.2.180.0070.00718.09
8.2.170.0100.01022.96
8.2.160.0140.00722.96
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0000.00826.16
8.2.120.0040.00426.16
8.2.110.0030.00619.30
8.2.100.0070.00617.78
8.2.90.0000.00818.22
8.2.80.0000.00720.41
8.2.70.0030.00517.63
8.2.60.0030.00617.90
8.2.50.0000.00818.07
8.2.40.0040.00419.95
8.2.30.0050.00317.98
8.2.20.0050.00317.98
8.2.10.0040.00419.25
8.2.00.0040.00419.15
8.1.330.0110.01016.91
8.1.320.0120.00619.83
8.1.310.0040.00420.12
8.1.300.0080.00017.61
8.1.290.0060.00330.84
8.1.280.0110.00425.92
8.1.270.0100.00620.82
8.1.260.0090.00026.35
8.1.250.0030.00628.09
8.1.240.0180.00423.78
8.1.230.0060.00620.88
8.1.220.0070.00017.75
8.1.210.0000.00719.04
8.1.200.0040.00717.10
8.1.190.0060.00317.10
8.1.180.0080.00018.10
8.1.170.0040.00418.53
8.1.160.0050.00318.77
8.1.150.0000.00718.71
8.1.140.0040.00422.05
8.1.130.0080.00020.12
8.1.120.0000.01017.45
8.1.110.0050.00217.30
8.1.100.0040.00417.41
8.1.90.0080.00017.42
8.1.80.0000.00717.30
8.1.70.0000.00817.39
8.1.60.0000.00917.50
8.1.50.0050.00317.34
8.1.40.0070.00317.48
8.1.30.0030.00617.46
8.1.20.0050.00317.60
8.1.10.0000.00817.43
8.1.00.0050.00317.38
8.0.300.0080.00019.91
8.0.290.0050.00316.63
8.0.280.0030.00318.30
8.0.270.0030.00318.00
8.0.260.0040.00419.91
8.0.250.0060.00016.94
8.0.240.0050.00316.78
8.0.230.0060.00316.90
8.0.220.0030.00316.74
8.0.210.0040.00216.70
8.0.200.0060.00016.86
8.0.190.0050.00316.85
8.0.180.0000.00816.92
8.0.170.0000.00816.82
8.0.160.0030.00516.91
8.0.150.0040.00416.75
8.0.140.0050.00316.85
8.0.130.0030.00313.35
8.0.120.0070.00016.70
8.0.110.0080.00016.86
8.0.100.0000.00716.87
8.0.90.0030.00616.88
8.0.80.0090.01016.86
8.0.70.0070.00016.81
8.0.60.0000.00716.86
8.0.50.0040.00416.71
8.0.30.0100.00716.96
8.0.20.0090.00917.27
8.0.10.0080.00016.85
8.0.00.0080.01116.61
7.4.330.0020.00216.79
7.4.320.0030.00316.49
7.4.300.0030.00316.55
7.4.290.0060.00316.36
7.4.280.0040.00716.47
7.4.270.0000.00716.46
7.4.260.0000.00513.20
7.4.250.0030.00316.31
7.4.240.0020.00616.49
7.4.230.0000.00716.58
7.4.220.0020.00516.37
7.4.210.0070.00716.46
7.4.200.0030.00416.64
7.4.130.0120.00616.38
7.4.120.0160.00716.53
7.4.110.0120.00616.34
7.4.100.0110.00816.61
7.4.90.0080.00816.65
7.4.80.0070.01019.39
7.4.70.0000.01616.38
7.4.60.0080.00816.53
7.4.50.0120.00316.48
7.4.40.0120.00416.50
7.4.00.0080.00614.72
7.3.330.0070.00016.32
7.3.320.0000.00613.25
7.3.310.0030.00316.47
7.3.300.0000.00716.34
7.3.290.0090.00916.37
7.3.280.0120.00316.34
7.3.260.0140.00616.38
7.3.240.0080.00916.42
7.3.230.0070.01116.37
7.3.210.0070.01116.43
7.3.200.0030.01416.71
7.3.190.0110.00716.58
7.3.180.0000.01516.43
7.3.170.0100.00716.58
7.3.160.0120.00916.41
7.3.120.0070.00714.61
7.3.110.0070.01014.89
7.3.100.0100.00714.84
7.3.90.0120.00314.66
7.3.80.0000.01514.75
7.3.70.0090.01115.02
7.3.60.0250.01714.83
7.3.50.0070.00814.91
7.3.40.0090.00914.93
7.3.30.0070.01214.82
7.3.20.0160.00414.91
7.3.10.0110.00514.84
7.3.00.0120.00814.81
7.2.330.0070.01116.38
7.2.320.0130.00916.61
7.2.310.0100.01016.65
7.2.300.0090.00916.75
7.2.290.0140.00316.49
7.2.250.0060.01215.23
7.2.240.0080.00814.97
7.2.230.0030.01315.20
7.2.220.0100.00715.10
7.2.210.0090.00615.17
7.2.200.0050.01515.13
7.2.190.0030.01214.89
7.2.180.0070.00714.82
7.2.170.0030.01114.88
7.2.160.0060.01314.86
7.2.150.0080.00914.95
7.2.140.0080.00815.10
7.2.130.0000.02014.98
7.2.120.0100.01015.07
7.2.110.0070.01315.02
7.2.100.0110.00614.91
7.2.90.0110.00415.09
7.2.80.0090.00615.09
7.2.70.0090.00615.15
7.2.60.0040.01115.20
7.2.50.0070.00715.00
7.2.40.0110.00814.95
7.2.30.0070.01415.17
7.2.20.0100.01015.01
7.2.10.0080.01215.06
7.2.00.0050.01014.92

preferences:
30.46 ms | 403 KiB | 5 Q