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; $j++) { if($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)
8.3.70.0130.01018.16
8.3.60.0060.00916.63
8.3.50.0250.00622.04
8.3.40.0000.01418.53
8.3.30.0110.00419.18
8.3.20.0040.00420.34
8.3.10.0000.00723.66
8.3.00.0040.00422.46
8.2.180.0120.00316.75
8.2.170.0110.00322.96
8.2.160.0040.01120.47
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0000.00722.27
8.2.110.0030.00622.20
8.2.100.0090.00317.84
8.2.90.0000.00819.14
8.2.80.0030.00618.04
8.2.70.0060.00317.63
8.2.60.0000.00817.93
8.2.50.0050.00318.07
8.2.40.0020.00518.16
8.2.30.0050.00218.16
8.2.20.0080.00017.67
8.2.10.0070.00017.70
8.2.00.0000.00917.78
8.1.280.0000.01425.92
8.1.270.0060.00323.96
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0060.00323.89
8.1.230.0040.00719.12
8.1.220.0060.00317.74
8.1.210.0050.00318.77
8.1.200.0000.00917.36
8.1.190.0030.00617.52
8.1.180.0000.00918.10
8.1.170.0050.00318.56
8.1.160.0000.00821.88
8.1.150.0040.00418.58
8.1.140.0040.00417.46
8.1.130.0030.00317.80
8.1.120.0000.00717.43
8.1.110.0080.00017.46
8.1.100.0040.00417.47
8.1.90.0070.00017.44
8.1.80.0030.00317.49
8.1.70.0000.00717.40
8.1.60.0000.00917.61
8.1.50.0030.00617.57
8.1.40.0040.00417.51
8.1.30.0000.00817.50
8.1.20.0050.00217.62
8.1.10.0040.00417.57
8.1.00.0000.00717.43
8.0.300.0070.00018.77
8.0.290.0060.00316.93
8.0.280.0030.00318.34
8.0.270.0040.00417.27
8.0.260.0030.00316.83
8.0.250.0000.00716.97
8.0.240.0070.00016.81
8.0.230.0020.00516.98
8.0.220.0050.00316.95
8.0.210.0030.00316.80
8.0.200.0060.00016.84
8.0.190.0000.00716.97
8.0.180.0000.00716.98
8.0.170.0070.00016.98
8.0.160.0030.00416.93
8.0.150.0070.00016.78
8.0.140.0000.00716.87
8.0.130.0030.00313.30
8.0.120.0040.00416.86
8.0.110.0070.00016.94
8.0.100.0040.00416.97
8.0.90.0000.00716.93
8.0.80.0100.00616.87
8.0.70.0060.00316.69
8.0.60.0040.00416.96
8.0.50.0020.00516.87
8.0.30.0050.01417.03
8.0.20.0090.01017.40
8.0.10.0040.00417.15
8.0.00.0110.00716.59
7.4.330.0050.00015.10
7.4.320.0060.00016.60
7.4.300.0030.00316.67
7.4.290.0040.00416.63
7.4.280.0020.00516.60
7.4.270.0000.00816.60
7.4.260.0000.00616.43
7.4.250.0070.00016.45
7.4.240.0050.00216.56
7.4.230.0070.00016.62
7.4.220.0150.00316.49
7.4.210.0070.00916.55
7.4.200.0000.00716.56
7.4.190.0000.00716.48
7.4.160.0080.00816.52
7.4.150.0090.00917.40
7.4.140.0130.00417.86
7.4.130.0120.00616.63
7.4.120.0080.00916.50
7.4.110.0130.00316.41
7.4.100.0110.00816.55
7.4.90.0080.00816.47
7.4.80.0090.01219.39
7.4.70.0070.01016.46
7.4.60.0140.00816.52
7.4.50.0030.00316.49
7.4.40.0120.00622.77
7.4.30.0160.00016.54
7.4.00.0070.00715.16
7.3.330.0030.00313.44
7.3.320.0000.00513.32
7.3.310.0040.00416.28
7.3.300.0070.00016.22
7.3.290.0090.00616.41
7.3.280.0100.00816.39
7.3.270.0140.00317.40
7.3.260.0110.01116.36
7.3.250.0090.01216.53
7.3.240.0030.01316.68
7.3.230.0090.00916.54
7.3.210.0070.01016.30
7.3.200.0070.01319.39
7.3.190.0100.01016.53
7.3.180.0120.00316.27
7.3.170.0060.00916.56
7.3.160.0060.01016.51
7.3.120.0070.01014.84
7.2.330.0040.01416.83
7.2.320.0080.01216.48
7.2.310.0100.00716.87
7.2.300.0110.00516.83
7.2.290.0070.01516.70
7.2.00.0070.00719.59
7.1.200.0030.00615.94
7.1.100.0080.00318.20
7.1.70.0000.00817.09
7.1.60.0140.01119.29
7.1.50.0120.00317.12
7.1.00.0100.06722.32
7.0.200.0090.00416.84
7.0.140.0030.07322.09
7.0.60.0000.04319.95
7.0.50.0130.03017.96
7.0.40.0000.05020.23
7.0.30.0300.07020.19
7.0.20.0300.05020.08
7.0.10.0200.05320.26
7.0.00.0100.07320.16
5.6.280.0000.07720.82
5.6.210.0130.07720.47
5.6.200.0130.08318.18
5.6.190.0070.05020.46
5.6.180.0100.07020.57
5.6.170.0270.08020.48
5.6.160.0130.05720.54
5.6.150.0100.08018.27
5.6.140.0100.05718.14
5.6.130.0170.05718.18
5.6.120.0000.05021.05
5.6.110.0070.06021.02
5.6.100.0100.08020.89
5.6.90.0070.08320.95
5.6.80.0070.07720.53
5.5.350.0000.06320.39
5.5.340.0100.05317.95
5.5.330.0030.08320.41
5.5.320.0000.04020.24
5.5.310.0170.04320.19
5.5.300.0030.05317.97
5.5.290.0130.06318.09
5.5.280.0070.04020.87
5.5.270.0030.04320.89
5.5.260.0030.08720.87
5.5.250.0030.08720.70
5.5.240.0000.04320.26
5.4.450.1100.04019.39
5.4.440.0630.06319.55
5.4.430.0530.04319.47
5.4.420.0730.06319.47
5.4.410.0630.06019.48
5.4.400.0700.06719.29
5.4.390.0470.05319.13
5.4.380.0200.05318.46
5.4.370.0170.05018.63
5.4.360.0170.05318.61
5.4.350.0100.05718.84
5.4.340.0230.06318.76
5.4.320.0070.03512.51
5.4.310.0050.05212.50
5.4.300.0040.04112.51
5.4.290.0090.04212.50
5.4.280.0060.03512.40
5.4.270.0080.03412.41
5.4.260.0060.03712.40
5.4.250.0070.04412.40
5.4.240.0060.03612.40
5.4.230.0050.04012.39
5.4.220.0320.09112.38
5.4.210.0260.09612.37
5.4.200.0200.04212.37
5.4.190.0290.06312.36
5.4.180.0390.07912.36
5.4.170.0160.04112.38
5.4.160.0280.09212.38
5.4.150.0170.04312.38
5.4.140.0310.08912.05
5.4.130.0360.08312.04
5.4.120.0160.04012.00
5.4.110.0100.04812.00
5.4.100.0160.04412.00
5.4.90.0130.04612.00
5.4.80.0160.04412.00
5.4.70.0160.04111.99
5.4.60.0460.07511.99
5.4.50.0290.08811.99
5.4.40.0320.08611.98
5.4.30.0170.04211.97
5.4.20.0170.04111.98
5.4.10.0190.03711.98
5.4.00.0200.09611.47
5.3.290.0050.04312.80
5.3.280.0070.04112.71
5.3.270.0150.04812.72
5.3.260.0150.04712.72
5.3.250.0310.08912.71
5.3.240.0130.04612.72
5.3.230.0360.08712.71
5.3.220.0140.04712.68
5.3.210.0360.08512.68
5.3.200.0150.04512.68
5.3.190.0290.09212.68
5.3.180.0410.08112.68
5.3.170.0440.11012.67
5.3.160.0180.04112.67
5.3.150.0210.04212.68
5.3.140.0240.06612.66
5.3.130.0140.04812.66
5.3.120.0180.04612.66
5.3.110.0260.04312.66
5.3.100.0440.04212.11
5.3.90.0210.04112.09
5.3.80.0180.04412.07
5.3.70.0170.04512.07
5.3.60.0160.04512.06
5.3.50.0490.07712.00
5.3.40.0180.04212.00
5.3.30.0200.04211.97
5.3.20.0190.04411.77
5.3.10.0150.04511.71
5.3.00.0310.08911.69
5.2.170.0350.0809.20
5.2.160.0120.0369.21
5.2.150.0130.0369.20
5.2.140.0290.0209.20
5.2.130.0340.0809.15
5.2.120.0160.0319.16
5.2.110.0130.0359.16
5.2.100.0170.0329.17
5.2.90.0140.0339.16
5.2.80.0150.0359.15
5.2.70.0140.0369.15
5.2.60.0160.0319.11
5.2.50.0110.0409.08
5.2.40.0220.0589.05
5.2.30.0110.0369.03
5.2.20.0160.0319.03
5.2.10.0160.0638.93
5.2.00.0300.0778.78
5.1.60.0100.0328.07
5.1.50.0130.0308.07
5.1.40.0080.0328.05
5.1.30.0640.0318.40
5.1.20.0200.0228.42
5.1.10.0340.0228.15
5.1.00.0510.1148.15
5.0.50.0110.0256.65
5.0.40.0130.0206.50
5.0.30.0090.0376.31
5.0.20.0120.0226.29
5.0.10.0270.0096.27
5.0.00.0150.0326.26
4.4.90.0070.0214.78
4.4.80.0180.0144.76
4.4.70.0290.0614.75
4.4.60.0140.0164.75
4.4.50.0240.0694.77
4.4.40.0080.0294.71
4.4.30.0100.0174.76
4.4.20.0360.0514.85
4.4.10.0090.0184.85
4.4.00.0080.0294.76
4.3.110.0060.0214.67
4.3.100.0310.0574.67
4.3.90.0110.0164.64
4.3.80.0060.0294.58
4.3.70.0340.0094.63
4.3.60.0090.0194.63
4.3.50.0090.0174.63
4.3.40.0130.0254.54
4.3.30.0070.0183.34
4.3.20.0020.0223.35
4.3.10.0060.0173.28
4.3.00.0070.01713.43

preferences:
36.83 ms | 401 KiB | 5 Q