3v4l.org

run code in 300+ PHP versions simultaneously
<?php function sub_string($pattern, $subject) { $n = strlen($subject); $m = strlen($pattern); for ($i = 0; $i < $n-$m; $i++) { $j = 0; while ($j < $m && $subject[$i+$j] == $pattern[$j]) { $j++; } if ($j == $m){ return 1; }else{ return 0; } } } echo sub_string("hell", "hello");

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)
8.3.60.0100.00716.50
8.3.50.0090.00618.32
8.3.40.0150.00318.63
8.3.30.0080.00818.84
8.3.20.0020.00519.34
8.3.10.0080.00021.73
8.3.00.0000.00820.64
8.2.180.0180.00418.18
8.2.170.0120.00322.96
8.2.160.0110.00322.14
8.2.150.0070.00025.66
8.2.140.0040.00424.66
8.2.130.0050.00319.77
8.2.120.0040.00426.35
8.2.110.0060.00320.53
8.2.100.0080.00417.91
8.2.90.0040.00417.50
8.2.80.0030.00617.97
8.2.70.0000.00818.04
8.2.60.0000.00818.22
8.2.50.0000.00818.10
8.2.40.0000.00819.30
8.2.30.0050.00319.31
8.2.20.0030.00618.17
8.2.10.0070.00018.09
8.2.00.0030.00517.72
8.1.280.0070.01325.92
8.1.270.0040.00419.00
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0030.00623.88
8.1.230.0040.00720.89
8.1.220.0000.00717.74
8.1.210.0040.00418.77
8.1.200.0030.00717.22
8.1.190.0040.00417.22
8.1.180.0050.00318.10
8.1.170.0080.00018.71
8.1.160.0000.00718.80
8.1.150.0040.00418.89
8.1.140.0040.00422.05
8.1.130.0070.00020.27
8.1.120.0000.00717.49
8.1.110.0040.00417.50
8.1.100.0000.00917.29
8.1.90.0040.00417.47
8.1.80.0040.00417.47
8.1.70.0000.00717.45
8.1.60.0040.00417.48
8.1.50.0060.00317.52
8.1.40.0120.00017.49
8.1.30.0030.00617.61
8.1.20.0040.00417.66
8.1.10.0000.00717.48
8.1.00.0040.00417.54
8.0.300.0080.00818.77
8.0.290.0070.00016.63
8.0.280.0070.00018.43
8.0.270.0000.00717.25
8.0.260.0030.00318.36
8.0.250.0000.00716.95
8.0.240.0000.00716.83
8.0.230.0000.00816.90
8.0.220.0040.00416.86
8.0.210.0000.00716.91
8.0.200.0030.00317.02
8.0.190.0080.00016.79
8.0.180.0040.00416.79
8.0.170.0030.00616.94
8.0.160.0000.00716.84
8.0.150.0080.00416.75
8.0.140.0040.00416.79
8.0.130.0000.00513.36
8.0.120.0000.00816.94
8.0.110.0040.00416.96
8.0.100.0000.00716.83
8.0.90.0030.00316.96
8.0.80.0100.00616.88
8.0.70.0000.00816.82
8.0.60.0040.00417.02
8.0.50.0040.00416.90
8.0.30.0140.00416.98
8.0.20.0090.00917.40
8.0.10.0000.00816.85
8.0.00.0070.01016.80
7.4.330.0020.00215.55
7.4.320.0070.00016.50
7.4.300.0030.00316.50
7.4.290.0000.00716.56
7.4.280.0030.00416.51
7.4.270.0000.00716.56
7.4.260.0000.00716.58
7.4.250.0040.00416.44
7.4.240.0040.00416.53
7.4.230.0030.00316.50
7.4.220.0040.00416.39
7.4.210.0030.01016.58
7.4.200.0030.00316.52
7.4.160.0070.01116.50
7.4.140.0150.01017.86
7.4.130.0110.00816.50
7.4.120.0100.00916.52
7.4.110.0090.00916.23
7.4.100.0110.00616.39
7.4.90.0160.00416.61
7.4.80.0110.01119.39
7.4.70.0130.00716.51
7.4.60.0120.01016.35
7.4.50.0000.01916.64
7.4.40.0100.00616.50
7.4.00.0050.00514.91
7.3.330.0020.00213.35
7.3.320.0000.00613.34
7.3.310.0040.00416.36
7.3.300.0070.00016.32
7.3.290.0070.00016.32
7.3.280.0080.00616.37
7.3.260.0130.00916.39
7.3.240.0100.00716.57
7.3.230.0100.00716.33
7.3.210.0120.00416.43
7.3.200.0100.00616.43
7.3.190.0140.00916.59
7.3.180.0070.01416.69
7.3.170.0100.01316.60
7.3.160.0040.01216.40
7.2.330.0000.01816.75
7.2.320.0040.01416.80
7.2.310.0140.00916.82
7.2.300.0100.00716.84
7.2.290.0030.01416.72
7.2.110.0480.00714.71
7.2.100.0840.00314.74
7.2.90.1330.01114.81
7.2.80.1400.00714.79
7.2.70.0600.01115.15
7.2.60.1020.01114.89
7.2.50.0580.01715.03
7.2.40.1590.00314.98
7.2.30.1520.00715.13
7.2.20.0660.01015.13
7.2.10.1070.00814.89
7.2.00.0730.00814.80
7.1.230.0420.00514.04
7.1.220.0760.00913.98
7.1.210.1260.00514.04
7.1.200.0480.01213.94
7.1.190.0830.01213.96
7.1.180.0610.01113.91
7.1.170.1040.00613.84
7.1.160.1220.01113.94
7.1.150.0550.00413.89
7.1.140.0750.00813.90
7.1.130.0890.00513.78
7.1.120.0850.00313.71
7.1.110.0470.00413.72
7.1.100.0750.00613.65
7.1.90.0560.00613.86
7.1.80.0760.00513.87
7.1.70.0680.00913.82
7.1.60.1320.01231.88
7.1.50.0650.01131.57
7.1.40.0280.01831.69
7.1.30.1220.01031.53
7.1.20.0300.00831.90
7.1.10.1170.00713.89
7.1.00.0540.00913.63
5.6.380.0080.00814.16

preferences:
78.72 ms | 401 KiB | 5 Q