3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(0); function f($s){while(!$a&&++$i<strlen($s))for($j=0;$b=substr($s,$j++,$i);)strpos($s,$b)==strrpos($s,$b)&&($a[]=$b);return$a;} echo "------\n"; var_dump(f("")); echo "\n"; // -> [""] var_dump(f("abcaa")); // -> ["b","c"] var_dump(f("rererere")); echo "\n"; // -> ["ererer"] var_dump(f("asdfasdfd")); echo "\n"; // -> ["fa","fd"] var_dump(f("ffffhhhhfffffhhhhhfffhhh")); echo "\n"; // -> ["hffff","fffff","hhhhh","hfffh"] var_dump(f("asdfdfasddfdfaddsasadsasadsddsddfdsasdf")); echo "\n"; // -> ["fas","fad","add","fds"] echo "------\n";

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)
8.3.60.0140.00716.75
8.3.50.0110.00722.04
8.3.40.0100.01018.80
8.3.30.0150.00319.05
8.3.20.0040.00420.21
8.3.10.0080.00021.73
8.3.00.0060.01219.79
8.2.180.0060.00925.92
8.2.170.0130.00319.08
8.2.160.0030.01319.46
8.2.150.0000.00825.66
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0120.00326.16
8.2.110.0000.00921.07
8.2.100.0120.00018.03
8.2.90.0050.00319.30
8.2.80.0040.00417.97
8.2.70.0080.00418.16
8.2.60.0040.00418.05
8.2.50.0040.00418.10
8.2.40.0050.00320.61
8.2.30.0040.00418.12
8.2.20.0050.00317.67
8.2.10.0070.00018.14
8.2.00.0070.00017.75
8.1.280.0100.00725.92
8.1.270.0040.00424.66
8.1.260.0050.00326.35
8.1.250.0000.00828.09
8.1.240.0030.00619.34
8.1.230.0120.00017.77
8.1.220.0060.00317.89
8.1.210.0050.00318.77
8.1.200.0030.00617.23
8.1.190.0080.00017.22
8.1.180.0040.00418.10
8.1.170.0000.00818.56
8.1.160.0030.00522.13
8.1.150.0090.00018.77
8.1.140.0000.00717.43
8.1.130.0090.00017.69
8.1.120.0000.00817.45
8.1.110.0040.00417.47
8.1.100.0000.00817.29
8.1.90.0000.00717.45
8.1.80.0080.00017.47
8.1.70.0030.00317.34
8.1.60.0060.00317.60
8.1.50.0030.00617.51
8.1.40.0030.00617.37
8.1.30.0050.00317.50
8.1.20.0050.00317.54
8.1.10.0000.00817.47
8.1.00.0000.00817.33
8.0.300.0040.00418.77
8.0.290.0030.00616.75
8.0.280.0070.00018.35
8.0.270.0050.00316.93
8.0.260.0030.00517.17
8.0.250.0000.00616.93
8.0.240.0030.00316.96
8.0.230.0000.00716.90
8.0.220.0030.00316.99
8.0.210.0040.00416.96
8.0.200.0060.00316.91
8.0.190.0060.00316.92
8.0.180.0020.00516.88
8.0.170.0040.00416.84
8.0.160.0060.00616.93
8.0.150.0040.00416.86
8.0.140.0070.00016.90
8.0.130.0060.00013.33
8.0.120.0030.00616.88
8.0.110.0070.00016.86
8.0.100.0030.00516.89
8.0.90.0000.00717.06
8.0.80.0090.00616.85
8.0.70.0040.00417.01
8.0.60.0000.00717.01
8.0.50.0000.00716.78
8.0.30.0130.00817.12
8.0.20.0100.01017.40
8.0.10.0050.00217.07
8.0.00.0090.01216.78
7.4.330.0030.00315.03
7.4.320.0030.00316.50
7.4.300.0020.00516.54
7.4.290.0000.00816.43
7.4.280.0050.00316.43
7.4.270.0030.00316.63
7.4.260.0030.00316.42
7.4.250.0020.00516.55
7.4.240.0020.00516.44
7.4.230.0070.00016.64
7.4.220.0120.00916.50
7.4.210.0120.00416.55
7.4.200.0040.00416.29
7.4.160.0040.01216.41
7.4.150.0120.00617.40
7.4.140.0070.01117.86
7.4.130.0140.00316.50
7.4.120.0130.00716.53
7.4.110.0100.01016.54
7.4.100.0150.00316.74
7.4.90.0100.01016.58
7.4.80.0030.01419.39
7.4.70.0150.00316.70
7.4.60.0000.01616.59
7.4.50.0060.00316.57
7.4.40.0100.00816.59
7.4.30.0030.01316.45
7.4.00.0130.00314.84
7.3.330.0000.00613.37
7.3.320.0030.00313.42
7.3.310.0070.00016.39
7.3.300.0040.00416.29
7.3.290.0030.01016.41
7.3.280.0090.00916.41
7.3.270.0030.01317.40
7.3.260.0160.01216.44
7.3.250.0080.01316.46
7.3.240.0090.00916.62
7.3.230.0100.00616.39
7.3.210.0110.00716.34
7.3.200.0130.00619.39
7.3.190.0090.00916.34
7.3.180.0110.00516.54
7.3.170.0090.00916.54
7.3.160.0140.00816.55
7.2.330.0110.00716.81
7.2.320.0110.00716.66
7.2.310.0190.00016.75
7.2.300.0090.00916.63
7.2.290.0090.01616.79
7.2.60.0100.00316.66
7.2.00.0000.01419.04
7.1.200.0070.00415.77
7.1.100.0030.00618.16
7.1.70.0000.00717.20
7.1.60.0030.01417.06
7.1.50.0030.00716.68
7.1.40.0030.01016.64
7.1.30.0060.00616.53
7.1.20.0040.00716.79
7.1.10.0060.00316.52
7.1.00.0040.00416.54
7.0.200.0060.01016.82
7.0.190.0030.00516.77
7.0.180.0000.00816.38
7.0.170.0040.00416.46
7.0.160.0000.01016.37
7.0.150.0000.01016.48
7.0.140.0060.00616.42
7.0.130.0060.00316.60
7.0.120.0000.00816.68
7.0.110.0060.00316.36
7.0.100.0040.00416.33
7.0.90.0080.00416.30
7.0.80.0000.00816.42
7.0.70.0030.00616.16
7.0.60.0090.00316.24
7.0.50.0070.00316.41
7.0.40.0040.00414.82
7.0.30.0030.00714.82
7.0.20.0040.00414.82
7.0.10.0040.00714.82
7.0.00.0030.00614.82
5.6.300.0260.03620.80
5.6.290.0100.04120.81
5.6.280.0170.03020.71
5.6.270.0000.04620.99
5.6.260.0060.03820.84
5.6.250.0130.04520.81
5.6.240.0030.05420.93
5.6.230.0060.03920.75
5.6.220.0030.05420.83
5.6.210.0030.04120.57
5.6.200.0070.04920.89
5.6.190.0030.04320.76
5.6.180.0000.04820.94
5.6.170.0000.04920.77
5.6.160.0070.06320.73
5.6.150.0000.05520.68
5.6.140.0000.05620.77
5.6.130.0000.04420.73
5.6.120.0070.04720.88
5.6.110.0030.04620.77
5.6.100.0000.05420.86
5.6.90.0100.03320.92
5.6.80.0030.04420.34
5.6.70.0000.06620.13
5.6.60.0030.03820.22
5.6.50.0000.05220.10
5.6.40.0100.03520.13
5.6.30.0100.07120.04
5.6.20.0000.04420.15
5.6.10.0100.03920.32
5.6.00.0030.04520.12
5.5.380.0070.03917.52
5.5.370.0070.04117.57
5.5.360.0040.04717.46
5.5.350.0100.03617.40
5.5.340.0070.06218.18
5.5.330.0000.04518.11
5.5.320.0030.04517.71
5.5.310.0070.04317.84
5.5.300.0030.04118.18
5.5.290.0090.03418.00
5.5.280.0030.05218.03
5.5.270.0030.04018.09
5.5.260.0100.03318.04
5.5.250.0030.04017.91
5.5.240.0000.05617.47
5.5.230.0100.03517.37
5.5.220.0000.08317.40
5.5.210.0130.04017.39
5.5.200.0070.07417.48
5.5.190.0000.04817.39
5.5.180.0030.04417.44
5.5.160.0000.04017.45
5.5.150.0100.06017.44
5.5.140.0070.04317.35
5.5.130.0090.04417.45
5.5.120.0000.04017.41
5.5.110.0000.04117.38
5.5.100.0130.04716.96
5.5.90.0030.04017.39
5.5.80.0030.03817.35
5.5.70.0070.03817.25
5.5.60.0070.06017.42
5.5.50.0060.03817.34
5.5.40.0070.03617.08
5.5.30.0030.04017.06
5.5.20.0030.03816.95
5.5.10.0070.04616.98
5.5.00.0000.04916.97
5.4.450.0000.04619.45
5.4.440.0030.04019.32
5.4.430.0030.03919.39
5.4.420.0030.03919.53
5.4.410.0030.03619.15
5.4.400.0030.05919.08
5.4.390.0000.04019.21
5.4.380.0000.04519.18
5.4.370.0070.03319.09
5.4.360.0000.05918.98
5.4.350.0030.08119.12
5.4.340.0070.06719.07
5.4.320.0000.06319.18
5.4.310.0100.05019.12
5.4.300.0070.03318.95
5.4.290.0070.03519.18
5.4.280.0000.04919.21
5.4.270.0070.04318.92
5.4.260.0070.03519.04
5.4.250.0090.04418.98
5.4.240.0170.03719.16
5.4.230.0040.03619.20
5.4.220.0000.04619.21
5.4.210.0030.04619.07
5.4.200.0000.04318.95
5.4.190.0070.03718.91
5.4.180.0000.06119.16
5.4.170.0030.03718.94
5.4.160.0000.04419.07
5.4.150.0240.03719.07
5.4.140.0000.04316.50
5.4.130.0030.04316.79
5.4.120.0070.03416.69
5.4.110.0220.03216.50
5.4.100.0000.03716.41
5.4.90.0000.03716.48
5.4.80.0030.04016.47
5.4.70.0000.03916.73
5.4.60.0000.03916.71
5.4.50.0170.03416.46
5.4.40.0000.03916.66
5.4.30.0060.03816.71
5.4.20.0100.02616.71
5.4.10.0000.03816.46
5.4.00.0000.03515.90
5.3.290.0030.04214.82
5.3.280.0130.04014.90
5.3.270.0060.04214.87
5.3.260.0000.05114.87
5.3.250.0030.03614.89
5.3.240.0030.04214.96
5.3.230.0000.04114.82
5.3.220.0030.03814.85
5.3.210.0030.03914.82
5.3.200.0000.03914.82
5.3.190.0030.04014.82
5.3.180.0030.03514.87
5.3.170.0060.03514.92
5.3.160.0030.03814.82
5.3.150.0030.04714.82
5.3.140.0060.04214.84
5.3.130.0030.03614.82
5.3.120.0000.03914.82
5.3.110.0030.03514.82
5.3.100.0000.04114.82
5.3.90.0000.04214.82
5.3.80.0000.03714.82
5.3.70.0030.04114.82
5.3.60.0030.04114.82
5.3.50.0030.03714.82
5.3.40.0030.03714.82
5.3.30.0000.03714.82
5.3.20.0000.04314.82
5.3.10.0030.03614.82
5.3.00.0000.04514.82
5.2.170.0000.03814.82
5.2.160.0030.02814.82
5.2.150.0030.03014.82
5.2.140.0030.03214.82
5.2.130.0000.02914.82
5.2.120.0000.03014.82
5.2.110.0000.03114.82
5.2.100.0060.02514.82
5.2.90.0030.02614.82
5.2.80.0030.02714.82
5.2.70.0000.03014.82
5.2.60.0100.04714.82
5.2.50.0000.03514.82
5.2.40.0000.03814.82
5.2.30.0040.03914.82
5.2.20.0030.03414.82
5.2.10.0070.02414.82
5.2.00.0070.02814.82
5.1.60.0030.02614.82
5.1.50.0030.02414.82
5.1.40.0060.02514.82
5.1.30.0000.03314.82
5.1.20.0000.03014.82
5.1.10.0030.02414.82
5.1.00.0030.02314.82
5.0.50.0000.02214.82
5.0.40.0030.01814.82
5.0.30.0030.02814.82
5.0.20.0090.01214.82
5.0.10.0070.01714.82
5.0.00.0000.04214.82
4.4.90.0040.01914.82
4.4.80.0030.02014.82
4.4.70.0030.01614.82
4.4.60.0000.01814.82
4.4.50.0000.01814.82
4.4.40.0000.02714.82
4.4.30.0100.01414.82
4.4.20.0000.02214.82
4.4.10.0030.02214.82
4.4.00.0000.02814.82
4.3.110.0000.01714.82
4.3.100.0000.01714.82
4.3.90.0000.01714.82
4.3.80.0000.03014.82
4.3.70.0030.01514.82
4.3.60.0000.01714.82
4.3.50.0030.02014.82
4.3.40.0030.03914.82
4.3.30.0030.01914.82
4.3.20.0000.02014.82
4.3.10.0030.01714.82
4.3.00.0030.01614.82

preferences:
33.59 ms | 401 KiB | 5 Q