3v4l.org

run code in 300+ PHP versions simultaneously
<?php function getSimilarSubstring($a, $b) { if(!strlen($a) || !strlen($b)) { return ''; } if(false!==strpos($a, $b)) { return $b; } $length = strlen($b); for($i=$length-1; $i>0; $i--) { for($j=0; $j<$length-$i; $j++) { echo(sprintf('Current[%s][%s] = %s'.PHP_EOL, $i, $j, substr($b, $j, $i))); if($result = getSimilarSubstring($a, substr($b, $j, $i))) { return $result; } } } return ''; } $word_a = "superman"; $word_b = "stermastein"; //$word_a = 'afk'; //$word_b = 'fk'; var_dump(getSimilarSubstring($word_a, $word_b));

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)
8.3.60.0140.00418.20
8.3.50.0130.00721.27
8.3.40.0040.01118.79
8.3.30.0000.01420.33
8.3.20.0000.00820.54
8.3.10.0040.00420.95
8.3.00.0030.00523.43
8.2.180.0140.00716.50
8.2.170.0110.00422.96
8.2.160.0100.00320.47
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0040.00421.07
8.2.110.0050.00519.23
8.2.100.0060.00617.91
8.2.90.0030.00719.17
8.2.80.0040.00419.28
8.2.70.0000.01017.63
8.2.60.0080.00017.93
8.2.50.0000.00818.07
8.2.40.0050.00318.34
8.2.30.0000.00819.44
8.2.20.0000.00717.67
8.2.10.0000.00717.69
8.2.00.0050.00217.63
8.1.280.0140.00325.92
8.1.270.0040.00423.99
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0040.00422.51
8.1.230.0040.00820.91
8.1.220.0060.00318.77
8.1.210.0040.00418.91
8.1.200.0050.00517.35
8.1.190.0030.00617.52
8.1.180.0000.00818.10
8.1.170.0040.00418.51
8.1.160.0040.00418.91
8.1.150.0080.00018.65
8.1.140.0040.00417.49
8.1.130.0030.00317.75
8.1.120.0030.00417.37
8.1.110.0000.00817.46
8.1.100.0000.00717.45
8.1.90.0000.00717.52
8.1.80.0040.00417.44
8.1.70.0030.00317.43
8.1.60.0000.00817.63
8.1.50.0040.00417.54
8.1.40.0040.00417.41
8.1.30.0050.00317.66
8.1.20.0040.00417.57
8.1.10.0040.00417.58
8.1.00.0000.00717.37
8.0.300.0040.00419.90
8.0.290.0000.00717.18
8.0.280.0000.00718.34
8.0.270.0000.00717.22
8.0.260.0000.00716.82
8.0.250.0050.00316.99
8.0.240.0050.00216.90
8.0.230.0000.00716.96
8.0.220.0050.00316.83
8.0.210.0070.00016.79
8.0.200.0000.00716.99
8.0.190.0040.00416.84
8.0.180.0080.00016.82
8.0.170.0000.00816.94
8.0.160.0050.00316.98
8.0.150.0040.00416.85
8.0.140.0000.00816.75
8.0.130.0000.00613.33
8.0.120.0080.00016.80
8.0.110.0020.00516.84
8.0.100.0080.00016.73
8.0.90.0000.00716.73
8.0.80.0100.01016.88
8.0.70.0040.00416.86
8.0.60.0000.00716.89
8.0.50.0000.00716.79
8.0.30.0140.00517.07
8.0.20.0100.01017.40
8.0.10.0040.00416.96
8.0.00.0130.00816.69
7.4.330.0040.00015.07
7.4.320.0000.00616.51
7.4.300.0000.00616.61
7.4.290.0040.00416.60
7.4.280.0000.00616.44
7.4.270.0030.00316.61
7.4.260.0000.00513.35
7.4.250.0070.00016.58
7.4.240.0030.00316.53
7.4.230.0050.00316.42
7.4.220.0040.01216.62
7.4.210.0090.00816.58
7.4.200.0070.00016.58
7.4.190.0000.00816.73
7.4.160.0080.00816.37
7.4.150.0200.00017.40
7.4.140.0060.01117.86
7.4.130.0150.00516.53
7.4.120.0130.00416.47
7.4.110.0060.01016.61
7.4.100.0130.01016.54
7.4.90.0110.00716.42
7.4.80.0120.00619.39
7.4.70.0100.00816.61
7.4.60.0090.00816.62
7.4.50.0080.00016.54
7.4.40.0090.00922.77
7.4.30.0090.00916.39
7.4.00.0000.01214.82
7.3.330.0000.00513.24
7.3.320.0030.00313.44
7.3.310.0000.00716.27
7.3.300.0070.00016.38
7.3.290.0110.00316.28
7.3.280.0050.01316.30
7.3.270.0070.01017.40
7.3.260.0070.01218.24
7.3.250.0220.00516.50
7.3.240.0110.00716.57
7.3.230.0120.00616.40
7.3.210.0170.00016.45
7.3.200.0060.01019.39
7.3.190.0000.01716.36
7.3.180.0060.01016.45
7.3.170.0090.00816.45
7.3.160.0090.00616.29
7.3.120.0110.00414.99
7.2.330.0100.00716.62
7.2.320.0180.00016.42
7.2.310.0120.00916.73
7.2.300.0100.01016.34
7.2.290.0000.01816.62
7.2.60.0070.00716.84
7.2.50.0060.00916.84
7.1.200.0000.00715.82
7.1.70.0000.01617.26
7.1.60.0110.01419.17
7.1.50.0100.01016.92
7.1.00.0100.06722.30
7.0.200.0020.00516.87
7.0.140.0130.06722.12
7.0.60.0130.07019.89
7.0.50.0030.04017.87
7.0.40.0100.06720.14
7.0.30.0570.07020.07
7.0.20.0270.03720.08
7.0.10.0230.04720.25
7.0.00.0030.09020.29
5.6.280.0030.07320.89
5.6.210.0170.07020.61
5.6.200.0000.05018.23
5.6.190.0100.08020.57
5.6.180.0270.04320.41
5.6.170.0300.08320.40
5.6.160.0100.08020.49
5.6.150.0030.06718.19
5.6.140.0070.08018.15
5.6.130.0070.07718.18
5.6.120.0100.08021.09
5.6.110.0070.08720.96
5.6.100.0070.08321.05
5.6.90.0030.04021.08
5.6.80.0200.04720.41
5.6.70.0300.07320.47
5.5.350.0230.04320.53
5.5.340.0030.05717.96
5.5.330.0070.08320.40
5.5.320.0330.05720.57
5.5.310.0200.07720.34
5.5.300.0070.08018.09
5.5.290.0130.03718.01
5.5.280.0100.04020.95
5.5.270.0100.08020.65
5.5.260.0130.07320.73
5.5.250.0100.07720.62
5.5.240.0100.08020.38
5.4.450.0200.04019.45
5.4.440.0300.04019.27
5.4.430.0200.04019.51
5.4.420.0230.06319.54
5.4.410.0270.07719.08
5.4.400.0130.03719.11
5.4.390.0130.03719.11
5.4.380.0100.04319.31
5.4.370.0130.03719.35
5.4.360.0200.03019.10
5.4.350.0170.03319.08
5.4.340.0170.03319.21
5.4.320.0170.03719.35
5.4.310.0100.04019.32
5.4.300.0170.04719.06
5.4.290.0200.03719.31
5.4.280.0170.04719.21
5.4.270.0170.04019.19
5.4.260.0170.03719.24
5.4.250.0170.03319.08
5.4.240.0170.03319.19
5.4.230.0200.04018.94
5.4.220.0130.04019.23
5.4.210.0130.03719.23
5.4.200.0200.04019.14
5.4.190.0470.03719.21
5.4.180.0100.05019.30
5.4.170.0200.05718.98
5.4.160.0200.03718.93
5.4.150.0270.04319.16
5.4.140.0170.03716.51
5.4.130.0170.03716.35
5.4.120.0270.05316.33
5.4.110.0130.03716.58
5.4.100.0170.05016.46
5.4.90.0270.04316.46
5.4.80.0230.06316.44
5.4.70.0200.06716.44
5.4.60.0270.06316.35
5.4.50.0230.06716.38
5.4.40.0370.06016.53
5.4.30.0270.06016.24
5.4.20.0270.04016.58
5.4.10.0200.04716.54
5.4.00.0130.04015.95
5.3.290.0070.04714.78
5.3.280.0130.04714.52
5.3.270.0130.04014.66
5.3.260.0200.07014.50
5.3.250.0200.07314.77
5.3.240.0230.03314.72
5.3.230.0100.04314.68
5.3.220.0200.07314.67
5.3.210.0230.04014.55
5.3.200.0130.03714.56
5.3.190.0100.07014.48
5.3.180.0200.07014.47
5.3.170.0200.07314.57
5.3.160.0200.07314.64
5.3.150.0270.07014.55
5.3.140.0370.05714.71
5.3.130.0230.06014.52
5.3.120.0170.04314.55
5.3.110.0200.06714.68
5.3.100.0200.04314.04
5.3.90.0330.06014.11
5.3.80.0230.04713.93
5.3.70.0200.07313.93
5.3.60.0270.06714.16
5.3.50.0270.06313.86
5.3.40.0230.06714.00
5.3.30.0270.06313.82
5.3.20.0270.06713.60
5.3.10.0230.05713.65
5.3.00.0270.05313.66
5.2.170.0270.04711.96
5.2.160.0230.05711.96
5.2.150.0170.04711.96
5.2.140.0200.05711.96
5.2.130.0130.04011.96
5.2.120.0230.05011.96
5.2.110.0200.05011.96
5.2.100.0130.03011.96
5.2.90.0330.04311.96
5.2.80.0230.03711.96
5.2.70.0170.05711.96
5.2.60.0100.04011.96
5.2.50.0130.03011.96
5.2.40.0100.04011.96
5.2.30.0130.03311.96
5.2.20.0170.06011.96
5.2.10.0200.04011.96
5.2.00.0130.06011.96
5.1.60.0230.04311.96
5.1.50.0130.04011.96
5.1.40.0100.02711.96
5.1.30.0200.05011.96
5.1.20.0130.05711.96
5.1.10.0170.02711.96
5.1.00.0130.05311.96
5.0.50.0100.04311.96
5.0.40.0070.02011.96
5.0.30.0100.05311.96
5.0.20.0070.03311.96
5.0.10.0130.03011.96
5.0.00.0070.05311.96
4.4.90.0100.01711.96
4.4.80.0030.03711.96
4.4.70.0030.02311.96
4.4.60.0100.02011.96
4.4.50.0130.01711.96
4.4.40.0070.05311.96
4.4.30.0070.02311.96
4.4.20.0070.02311.96
4.4.10.0170.02011.96
4.4.00.0070.03311.96
4.3.110.0100.03311.96
4.3.100.0130.03011.96
4.3.90.0070.03311.96
4.3.80.0100.03711.96
4.3.70.0100.01711.96
4.3.60.0100.03011.96
4.3.50.0100.03311.96
4.3.40.0130.04011.96
4.3.30.0070.03711.96
4.3.20.0030.04011.96
4.3.10.0070.02011.96
4.3.00.0030.04011.96

preferences:
47.1 ms | 401 KiB | 5 Q