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, $i))); if(false!==strpos($a, $result = substr($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)
8.3.60.0070.01118.43
8.3.50.0090.00821.33
8.3.40.0120.00318.69
8.3.30.0070.01420.18
8.3.20.0030.00620.30
8.3.10.0080.00020.92
8.3.00.0070.00023.52
8.2.180.0070.01416.63
8.2.170.0120.00922.96
8.2.160.0090.00620.38
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0070.00021.00
8.2.110.0090.00019.18
8.2.100.0060.00617.72
8.2.90.0040.00419.05
8.2.80.0040.00417.97
8.2.70.0090.00017.63
8.2.60.0000.00817.93
8.2.50.0060.00318.07
8.2.40.0090.00018.22
8.2.30.0050.00219.51
8.2.20.0040.00417.50
8.2.10.0000.00717.84
8.2.00.0000.00717.78
8.1.280.0080.00825.92
8.1.270.0070.00023.99
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0040.00423.93
8.1.230.0080.00420.95
8.1.220.0050.00318.77
8.1.210.0060.00319.07
8.1.200.0030.00617.23
8.1.190.0040.00417.41
8.1.180.0000.00818.10
8.1.170.0030.00518.71
8.1.160.0070.00018.98
8.1.150.0000.00718.57
8.1.140.0040.00417.48
8.1.130.0070.00017.82
8.1.120.0000.00717.39
8.1.110.0000.00717.53
8.1.100.0000.00717.36
8.1.90.0000.00817.41
8.1.80.0070.00017.45
8.1.70.0030.00317.46
8.1.60.0090.00017.64
8.1.50.0000.00817.50
8.1.40.0000.00817.61
8.1.30.0030.00517.68
8.1.20.0080.00017.66
8.1.10.0000.00717.43
8.1.00.0040.00417.49
8.0.300.0000.00820.07
8.0.290.0040.00417.14
8.0.280.0000.00718.43
8.0.270.0070.00017.28
8.0.260.0000.00716.96
8.0.250.0040.00416.87
8.0.240.0040.00416.92
8.0.230.0070.00017.02
8.0.220.0000.00716.90
8.0.210.0030.00316.90
8.0.200.0030.00317.02
8.0.190.0040.00416.88
8.0.180.0000.00716.83
8.0.170.0040.00416.97
8.0.160.0050.00316.88
8.0.150.0070.00016.88
8.0.140.0050.00316.78
8.0.130.0030.00313.38
8.0.120.0040.00416.88
8.0.110.0070.00016.86
8.0.100.0070.00016.87
8.0.90.0000.00716.89
8.0.80.0100.00716.90
8.0.70.0030.00516.91
8.0.60.0000.00816.73
8.0.50.0030.00516.71
8.0.30.0170.00417.27
8.0.20.0070.01117.40
8.0.10.0070.00017.05
8.0.00.0110.01316.66
7.4.330.0000.00616.66
7.4.320.0030.00316.54
7.4.300.0000.00616.63
7.4.290.0030.00316.67
7.4.280.0040.00416.54
7.4.270.0000.00716.62
7.4.260.0050.00013.38
7.4.250.0050.00216.52
7.4.240.0030.00316.55
7.4.230.0060.00316.61
7.4.220.0060.02016.56
7.4.210.0050.01216.60
7.4.200.0000.00716.41
7.4.190.0000.00716.51
7.4.160.0130.00316.39
7.4.150.0110.00717.40
7.4.140.0090.00717.86
7.4.130.0090.01216.51
7.4.120.0050.01416.48
7.4.110.0110.00816.60
7.4.100.0110.01016.59
7.4.90.0130.00616.56
7.4.80.0160.00019.39
7.4.70.0090.01016.60
7.4.60.0140.00716.52
7.4.50.0030.00616.39
7.4.40.0120.00622.77
7.4.30.0110.00716.32
7.4.00.0080.00815.23
7.3.330.0050.00013.39
7.3.320.0060.00013.39
7.3.310.0070.00016.44
7.3.300.0030.00316.39
7.3.290.0030.01116.39
7.3.280.0080.00916.40
7.3.270.0110.00617.40
7.3.260.0080.01118.24
7.3.250.0050.01316.51
7.3.240.0060.01016.29
7.3.230.0120.00616.39
7.3.210.0140.00316.70
7.3.200.0100.01319.39
7.3.190.0000.02016.48
7.3.180.0060.00916.49
7.3.170.0060.00916.47
7.3.160.0080.00816.38
7.3.120.0030.01414.91
7.2.330.0120.00616.54
7.2.320.0130.00916.81
7.2.310.0000.01916.73
7.2.300.0110.01116.79
7.2.290.0070.01316.75
7.2.60.0040.01116.97
7.2.00.0090.00619.26
7.1.200.0070.00715.86
7.1.100.0040.01118.11
7.1.70.0000.00917.24
7.1.60.0070.01019.17
7.1.50.0100.01016.78
7.1.00.0000.03722.44
7.0.200.0000.01216.52
7.0.140.0030.07322.15
7.0.110.0130.08019.98
7.0.100.0230.06319.99
7.0.90.0500.08020.05
7.0.80.0530.06319.96
7.0.70.0430.08019.91
7.0.60.0730.07319.95
7.0.50.0600.05020.35
7.0.40.0030.05020.04
7.0.30.0100.08020.24
7.0.20.0070.08020.27
7.0.10.0170.07720.27
7.0.00.0100.08320.15
5.6.280.0100.06721.10
5.6.250.0130.04320.70
5.6.240.0100.06720.64
5.6.230.0070.08020.71
5.6.220.0130.04320.68
5.6.210.0100.07020.66
5.6.200.0100.08321.23
5.6.190.0130.08021.13
5.6.180.0100.07721.19
5.6.170.0100.07721.08
5.6.160.0100.07721.22
5.6.150.0030.06321.22
5.6.140.0030.07721.11
5.6.130.0130.07320.97
5.6.120.0130.07021.11
5.6.110.0130.07721.21
5.6.100.0030.08721.02
5.6.90.0100.07720.91
5.6.80.0070.08320.53
5.6.70.0070.04720.60
5.6.60.0130.07020.66
5.6.50.0030.07320.32
5.6.40.0070.07720.58
5.6.30.0070.05320.45
5.6.20.0130.07320.53
5.6.10.0070.05320.41
5.6.00.0100.05320.50
5.5.380.0130.07320.25
5.5.370.0000.06720.48
5.5.360.0070.07320.46
5.5.350.0130.07320.48
5.5.340.0070.07720.96
5.5.330.0170.06720.84
5.5.320.0030.07720.82
5.5.310.0130.07720.87
5.5.300.0000.09020.88
5.5.290.0070.08720.97
5.5.280.0070.09020.78
5.5.270.0100.08020.75
5.5.260.0100.08020.80
5.5.250.0130.07720.62
5.5.240.0100.07020.38
5.5.230.0070.08320.38
5.5.220.0030.07020.36
5.5.210.0000.08320.36
5.5.200.0000.08320.14
5.5.190.0130.05720.39
5.5.180.0100.07320.26
5.5.160.0070.03720.30
5.5.150.0070.03720.33
5.5.140.0100.05320.33
5.5.130.0030.08020.36
5.5.120.0070.05320.23
5.5.110.0000.08020.15
5.5.100.0070.07020.28
5.5.90.0000.05320.19
5.5.80.0070.07320.16
5.5.70.0130.07320.13
5.5.60.0030.07720.07
5.5.50.0070.08020.07
5.5.40.0000.08720.01
5.5.30.0100.05720.14
5.5.20.0130.07019.96
5.5.10.0000.07020.06
5.5.00.0030.07719.96
5.4.450.0000.08719.64
5.4.440.0070.07719.33
5.4.430.0030.08719.32
5.4.420.0130.07719.48
5.4.410.0000.08319.53
5.4.400.0100.07719.18
5.4.390.0030.07719.14
5.4.380.0030.07718.99
5.4.370.0030.07719.09
5.4.360.0130.03319.03
5.4.350.0100.07019.26
5.4.340.0170.06319.25
5.4.320.0030.04719.18
5.4.310.0070.03719.16
5.4.300.0030.08019.16
5.4.290.0000.05718.95
5.4.280.0200.06319.03
5.4.270.0030.04719.26
5.4.260.0030.04019.23
5.4.250.0030.06319.09
5.4.240.0030.07718.98
5.4.230.0070.06019.02
5.4.220.0100.05319.14
5.4.210.0130.06719.22
5.4.200.0030.06719.02
5.4.190.0100.07319.02
5.4.180.0130.07019.00
5.4.170.0130.06319.30
5.4.160.0070.04719.02
5.4.150.0200.06319.07
5.4.140.0000.07016.51
5.4.130.0170.05316.43
5.4.120.0130.02716.35
5.4.110.0070.05716.55
5.4.100.0030.06016.36
5.4.90.0100.07016.32
5.4.80.0100.06316.40
5.4.70.0100.05016.36
5.4.60.0130.06016.29
5.4.50.0000.04716.48
5.4.40.0030.07316.34
5.4.30.0030.04316.51
5.4.20.0030.06316.53
5.4.10.0130.06316.48
5.4.00.0130.05715.91
5.3.290.0030.04014.62
5.3.280.0100.04014.74
5.3.270.0030.07714.64
5.3.260.0070.06714.46
5.3.250.0030.08014.84
5.3.240.0030.04714.48
5.3.230.0070.04014.64
5.3.220.0100.06714.57
5.3.210.0130.07014.70
5.3.200.0030.05014.56
5.3.190.0100.07014.57
5.3.180.0100.06714.79
5.3.170.0030.07014.59
5.3.160.0000.08314.79
5.3.150.0170.06014.70
5.3.140.0030.07314.51
5.3.130.0030.06314.63
5.3.120.0100.07014.56
5.3.110.0130.06714.40
5.3.100.0100.06714.05
5.3.90.0000.06714.00
5.3.80.0030.04014.04
5.3.70.0070.07014.04
5.3.60.0070.07014.02
5.3.50.0030.04313.92
5.3.40.0070.07713.97
5.3.30.0030.07013.89
5.3.20.0070.04713.77
5.3.10.0130.06313.75
5.3.00.0200.06713.65
5.2.170.0000.06711.28
5.2.160.0030.06311.20
5.2.150.0070.06011.18
5.2.140.0000.06711.20
5.2.130.0100.05711.20
5.2.120.0100.05711.11
5.2.110.0100.05711.18
5.2.100.0070.05711.07
5.2.90.0070.05711.09
5.2.80.0100.03311.08
5.2.70.0100.06011.31
5.2.60.0030.06311.13
5.2.50.0030.05010.98
5.2.40.0030.02711.05
5.2.30.0000.03010.97
5.2.20.0030.03010.92
5.2.10.0000.03011.09
5.2.00.0030.03010.73
5.1.60.0030.0239.96
5.1.50.0000.0279.96
5.1.40.0070.0209.96
5.1.30.0030.02710.36
5.1.20.0030.02710.34
5.1.10.0000.02710.03
5.1.00.0000.02710.05
5.0.50.0000.0208.56
5.0.40.0000.0208.68
5.0.30.0000.0378.22
5.0.20.0000.0238.29
5.0.10.0000.0208.26
5.0.00.0070.0437.96
4.4.90.0030.0277.80
4.4.80.0000.0277.80
4.4.70.0000.0237.80
4.4.60.0000.0237.80
4.4.50.0000.0177.80
4.4.40.0000.0237.80
4.4.30.0000.0177.80
4.4.20.0130.0077.80
4.4.10.0030.0137.80
4.4.00.0000.0207.80
4.3.110.0000.0137.80
4.3.100.0070.0177.80
4.3.90.0000.0137.80
4.3.80.0000.0407.80
4.3.70.0000.0177.80
4.3.60.0000.0307.80
4.3.50.0030.0277.80
4.3.40.0000.0237.80
4.3.30.0030.0137.80
4.3.20.0000.0137.80
4.3.10.0000.0177.80
4.3.00.0000.0177.80

preferences:
39.03 ms | 401 KiB | 5 Q