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; $j++) { echo('Current is: '.substr($b, $j, $i).PHP_EOL); if($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)
8.3.40.0160.00318.80
8.3.30.0060.00920.20
8.3.20.0000.00820.36
8.3.10.0060.00321.05
8.3.00.0000.00723.66
8.2.170.0070.00722.96
8.2.160.0100.00320.40
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0000.00826.16
8.2.120.0070.00021.04
8.2.110.0030.00622.30
8.2.100.0060.00617.91
8.2.90.0000.00819.22
8.2.80.0050.00217.97
8.2.70.0000.01117.50
8.2.60.0040.00417.80
8.2.50.0030.00618.07
8.2.40.0040.00418.22
8.2.30.0050.00319.46
8.2.20.0040.00417.66
8.2.10.0090.00017.68
8.2.00.0040.00417.64
8.1.270.0000.00723.99
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0030.00623.80
8.1.230.0080.00420.96
8.1.220.0100.00018.77
8.1.210.0000.00819.04
8.1.200.0100.00017.13
8.1.190.0000.00817.40
8.1.180.0040.00418.10
8.1.170.0080.00018.59
8.1.160.0080.00018.89
8.1.150.0010.00718.64
8.1.140.0040.00417.45
8.1.130.0030.00517.80
8.1.120.0040.00417.50
8.1.110.0070.00017.51
8.1.100.0040.00417.48
8.1.90.0040.00417.38
8.1.80.0000.00717.38
8.1.70.0070.00017.39
8.1.60.0000.01017.48
8.1.50.0040.00417.48
8.1.40.0070.00017.52
8.1.30.0040.00417.49
8.1.20.0040.00417.59
8.1.10.0040.00417.59
8.1.00.0030.00617.42
8.0.300.0050.00319.89
8.0.290.0000.00717.16
8.0.280.0000.00718.40
8.0.270.0030.00317.27
8.0.260.0000.00618.45
8.0.250.0070.00016.93
8.0.240.0040.00416.96
8.0.230.0000.00717.00
8.0.220.0060.00016.84
8.0.210.0000.00816.79
8.0.200.0030.00316.90
8.0.190.0040.00416.84
8.0.180.0050.00216.85
8.0.170.0000.00716.88
8.0.160.0040.00416.87
8.0.150.0050.00316.93
8.0.140.0050.00216.82
8.0.130.0000.00613.26
8.0.120.0000.00816.77
8.0.110.0040.00416.68
8.0.100.0000.00716.85
8.0.90.0040.00416.80
8.0.80.0090.00616.89
8.0.70.0040.00416.78
8.0.60.0040.00416.88
8.0.50.0000.00716.71
8.0.30.0070.01217.31
8.0.20.0200.02017.40
8.0.10.0070.00016.86
8.0.00.0090.00916.63
7.4.330.0030.00316.83
7.4.320.0060.00016.62
7.4.300.0000.00616.46
7.4.290.0000.00716.57
7.4.280.0070.00016.51
7.4.270.0030.00516.66
7.4.260.0000.00513.41
7.4.250.0070.00016.58
7.4.240.0040.00416.53
7.4.230.0040.00416.72
7.4.220.0160.01016.63
7.4.210.0070.01016.61
7.4.200.0000.00716.63
7.4.190.0000.00916.46
7.4.160.0140.00716.61
7.4.150.0140.00317.40
7.4.140.0050.01217.86
7.4.130.0120.00916.50
7.4.120.0120.00516.42
7.4.110.0070.01016.57
7.4.100.0140.00616.49
7.4.90.0090.00916.60
7.4.80.0120.00919.39
7.4.70.0070.01016.51
7.4.60.0120.00616.40
7.4.50.0060.00016.42
7.4.40.0000.01722.77
7.4.30.0140.00316.53
7.4.00.0050.01214.91
7.3.330.0030.00313.32
7.3.320.0000.00513.24
7.3.310.0040.00416.20
7.3.300.0070.00016.33
7.3.290.0110.00316.29
7.3.280.0080.00816.35
7.3.270.0140.00417.40
7.3.260.0130.00718.24
7.3.250.0120.00716.35
7.3.240.0060.01016.33
7.3.230.0090.00916.66
7.3.210.0000.01816.50
7.3.200.0070.01119.39
7.3.190.0060.01616.38
7.3.180.0100.01016.43
7.3.170.0090.00616.42
7.3.160.0080.00816.45
7.3.120.0070.01014.93
7.3.110.0100.00814.81
7.3.100.0090.00314.84
7.3.90.0030.01014.85
7.3.80.0110.00414.90
7.3.70.0020.01214.75
7.3.60.0070.00514.83
7.3.50.0060.01015.08
7.3.40.0080.00514.91
7.3.30.0020.01314.74
7.3.20.0080.00716.64
7.3.10.0070.00716.55
7.3.00.0060.00916.75
7.2.330.0120.00916.86
7.2.320.0050.01616.53
7.2.310.0060.01216.63
7.2.300.0090.00816.84
7.2.290.0090.00616.63
7.2.250.0100.01015.10
7.2.240.0040.01115.21
7.2.230.0070.00514.90
7.2.220.0060.01015.05
7.2.210.0040.01015.17
7.2.200.0060.00515.18
7.2.190.0070.00515.13
7.2.180.0050.00915.11
7.2.170.0050.00715.00
7.2.160.0100.00315.15
7.2.150.0050.00916.93
7.2.140.0080.00517.01
7.2.130.0060.00617.02
7.2.120.0070.00516.95
7.2.110.0050.01116.96
7.2.100.0030.00917.00
7.2.90.0070.00816.86
7.2.80.0030.01416.87
7.2.70.0080.01017.11
7.2.60.0040.01116.93
7.2.50.0040.01217.06
7.2.40.0020.01317.03
7.2.30.0100.00516.94
7.2.20.0050.01116.96
7.2.10.0070.00717.01
7.2.00.0050.00717.00
7.1.330.0070.00915.89
7.1.320.0110.00415.84
7.1.310.0060.00915.84
7.1.300.0070.00915.83
7.1.290.0060.00815.78
7.1.280.0050.00615.89
7.1.270.0040.01115.78
7.1.260.0080.00515.87
7.1.250.0070.00315.84
7.1.240.0040.01215.80
7.1.230.0000.01515.74
7.1.220.0040.00815.75
7.1.210.0030.00515.89
7.1.200.0090.00715.80
7.1.190.0060.01215.77
7.1.180.0030.01015.82
7.1.170.0070.00715.80
7.1.160.0030.01515.57
7.1.150.0100.00315.81
7.1.140.0090.00615.83
7.1.130.0110.00015.83
7.1.120.0090.00615.80
7.1.110.0060.00915.93
7.1.100.0050.00516.96
7.1.90.0080.00415.82
7.1.80.0060.00915.67
7.1.70.0080.00316.42
7.1.60.0080.01017.46
7.1.50.0050.01016.47
7.1.40.0040.00915.77
7.1.30.0060.00915.88
7.1.20.0070.01015.70
7.1.10.0140.00015.88
7.1.00.0050.02219.20
7.0.330.0000.01515.30
7.0.320.0070.00715.55
7.0.310.0060.00915.43
7.0.300.0040.00415.28
7.0.290.0160.00015.46
7.0.280.0070.00715.31
7.0.270.0040.00815.43
7.0.260.0060.00615.46
7.0.250.0000.01315.36
7.0.240.0030.01315.41
7.0.230.0070.00415.38
7.0.220.0030.00715.61
7.0.210.0080.00015.38
7.0.200.0100.00515.12
7.0.190.0040.01115.41
7.0.180.0000.01415.57
7.0.170.0000.01315.38
7.0.160.0070.00315.49
7.0.150.0030.01015.26
7.0.140.0070.03818.74
7.0.130.0090.00015.36
7.0.120.0000.00815.35
7.0.110.0080.00415.60
7.0.100.0050.03217.79
7.0.90.0050.03217.65
7.0.80.0130.03117.75
7.0.70.0150.04017.65
7.0.60.0050.04217.66
7.0.50.0130.04317.80
7.0.40.0000.03216.81
7.0.30.0040.05216.86
7.0.20.0050.03316.73
7.0.10.0130.04116.70
7.0.00.0050.04816.86
5.6.400.0080.00314.61
5.6.390.0070.00714.67
5.6.380.0070.00714.15
5.6.370.0130.00314.27
5.6.360.0030.01214.15
5.6.350.0100.00614.26
5.6.340.0030.01414.34
5.6.330.0070.00714.64
5.6.320.0030.01014.19
5.6.310.0090.00614.31
5.6.300.0120.00314.36
5.6.290.0040.01414.02
5.6.280.0080.03717.68
5.6.270.0060.00314.63
5.6.260.0060.00614.33
5.6.250.0070.03717.54
5.6.240.0110.02317.44
5.6.230.0020.04117.47
5.6.220.0100.03617.63
5.6.210.0030.02417.30
5.6.200.0050.04217.62
5.6.190.0090.04617.71
5.6.180.0050.04617.66
5.6.170.0080.03117.57
5.6.160.0080.03917.72
5.6.150.0070.02817.68
5.6.140.0050.04717.57
5.6.130.0070.04717.72
5.6.120.0070.04317.78
5.6.110.0100.04217.63
5.6.100.0100.03417.66
5.6.90.0080.02517.61
5.6.80.0100.03817.23
5.6.70.0050.04817.25
5.6.60.0100.03617.34
5.6.50.0060.03317.50
5.6.40.0070.02917.28
5.6.30.0080.04517.37
5.6.20.0100.04317.31
5.6.10.0110.02217.34
5.6.00.0030.04717.26
5.5.380.0060.04517.28
5.5.370.0110.04117.21
5.5.360.0030.03017.45
5.5.350.0070.04317.51
5.5.340.0080.04317.54
5.5.330.0100.03617.48
5.5.320.0080.04117.56
5.5.310.0020.03017.41
5.5.300.0050.04417.70
5.5.290.0070.04717.64
5.5.280.0030.03517.47
5.5.270.0120.03717.74
5.5.260.0110.04117.66
5.5.250.0060.03517.27
5.5.240.0050.04217.13
5.5.230.0050.04217.28
5.5.220.0100.04217.19
5.5.210.0090.03317.17
5.5.200.0070.04217.35
5.5.190.0050.02417.23
5.5.180.0030.03617.30
5.5.170.0030.01314.20
5.5.160.0150.01817.30
5.5.150.0070.04217.15
5.5.140.0050.04217.12
5.5.130.0070.03617.14
5.5.120.0000.03517.08
5.5.110.0080.03117.20
5.5.100.0110.03017.15
5.5.90.0060.04317.23
5.5.80.0050.03916.97
5.5.70.0130.03517.12
5.5.60.0130.02317.13
5.5.50.0050.04617.17
5.5.40.0080.03017.29
5.5.30.0050.03817.19
5.5.20.0070.02717.07
5.5.10.0060.03917.19
5.5.00.0080.04517.10
5.4.450.0050.02915.34
5.4.440.0090.03715.19
5.4.430.0070.04215.38
5.4.420.0120.03315.35
5.4.410.0070.03315.22
5.4.400.0070.03915.20
5.4.390.0060.01915.18
5.4.380.0030.04515.07
5.4.370.0070.03615.13
5.4.360.0050.02615.17
5.4.350.0090.03515.20
5.4.340.0030.02615.03
5.4.330.0100.00311.29
5.4.320.0100.02215.10
5.4.310.0050.03315.19
5.4.300.0070.03815.03
5.4.290.0030.04615.03
5.4.280.0040.02315.21
5.4.270.0090.03015.18
5.4.260.0070.03515.07
5.4.250.0040.02715.17
5.4.240.0050.04015.13
5.4.230.0000.04515.15
5.4.220.0050.02815.22
5.4.210.0070.02015.08
5.4.200.0100.01815.20
5.4.190.0050.03815.04
5.4.180.0050.03915.21
5.4.170.0030.04515.17
5.4.160.0060.04015.16
5.4.150.0080.03815.20
5.4.140.0030.04113.96
5.4.130.0090.03413.85
5.4.120.0070.03713.83
5.4.110.0050.04013.82
5.4.100.0050.02513.85
5.4.90.0050.03513.86
5.4.80.0080.03313.85
5.4.70.0070.02013.84
5.4.60.0050.02213.81
5.4.50.0050.03913.84
5.4.40.0070.02713.78
5.4.30.0050.02613.82
5.4.20.0080.03313.84
5.4.10.0020.03713.84
5.4.00.0050.02013.45
5.3.290.0110.03413.01
5.3.280.0030.03512.89
5.3.270.0100.03512.94
5.3.260.0030.04512.94
5.3.250.0030.02312.96
5.3.240.0050.03512.88
5.3.230.0050.04012.96
5.3.220.0020.04012.92
5.3.210.0100.03012.92
5.3.200.0080.03712.90
5.3.190.0030.02512.92
5.3.180.0080.03712.90
5.3.170.0080.03612.89
5.3.160.0100.03512.90
5.3.150.0030.02412.89
5.3.140.0010.04012.86
5.3.130.0030.02612.95
5.3.120.0040.02012.95
5.3.110.0070.03912.87
5.3.100.0030.02412.67
5.3.90.0030.02512.65
5.3.80.0020.02312.64
5.3.70.0090.01712.61
5.3.60.0050.02512.67
5.3.50.0030.02012.57
5.3.40.0060.01712.61
5.3.30.0030.01812.61
5.3.20.0030.02012.45
5.3.10.0060.01812.45
5.3.00.0050.02212.49
5.2.170.0130.02011.67
5.2.160.0100.02311.67
5.2.150.0070.02711.67
5.2.140.0000.03011.67
5.2.130.0030.02711.67
5.2.120.0030.02711.67
5.2.110.0000.03011.67
5.2.100.0000.03011.67
5.2.90.0070.02711.67
5.2.80.0000.03011.67
5.2.70.0000.03011.67
5.2.60.0030.03011.67
5.2.50.0100.05311.67
5.2.40.0030.06011.67
5.2.30.0000.06311.67
5.2.20.0030.02311.67
5.2.10.0000.04711.67
5.2.00.0000.04011.67
5.1.60.0000.02711.67
5.1.50.0000.02711.67
5.1.40.0100.02311.67
5.1.30.0000.02711.67
5.1.20.0030.02311.67
5.1.10.0030.02311.67
5.1.00.0100.02311.67
5.0.50.0030.02011.67
5.0.40.0000.02011.67
5.0.30.0030.02711.67
5.0.20.0000.02011.67
5.0.10.0000.02711.67
5.0.00.0030.03011.67
4.4.90.0070.01711.67
4.4.80.0030.02711.67
4.4.70.0000.01711.67
4.4.60.0070.01711.67
4.4.50.0000.03311.67
4.4.40.0000.02311.67
4.4.30.0000.02011.67
4.4.20.0000.02311.67
4.4.10.0000.01711.67
4.4.00.0000.03311.67
4.3.110.0070.01011.67
4.3.100.0000.01311.67
4.3.90.0030.01311.67
4.3.80.0000.02311.67
4.3.70.0000.01311.67
4.3.60.0000.01311.67
4.3.50.0070.01011.67
4.3.40.0030.02011.67
4.3.30.0000.01711.67
4.3.20.0000.01711.67
4.3.10.0030.01311.67
4.3.00.0000.01711.67

preferences:
51.99 ms | 400 KiB | 5 Q