3v4l.org

run code in 300+ PHP versions simultaneously
<?php function levenshteinDistance($a, $b) { echo("a = " + $a + ",b = " + $b); $matrix = array(count($a) + 1); for ($i=0; $i<count($a)+1; $i++) { $matrix[$i] = array(count($b) + 1); } for ($i=0; $i<count($a)+1; $i++) { $matrix[$i][0] = $i; } for ($j=0; $j<count($b)+1; $j++) { $matrix[0][$j] = $j; } for ($i=1; $i<count($a)+1; $i++) { for ($j=1; $j<count($b)+1; $j++) { //$x = $a[$i - 1] == $b[$j -1] ? 0 : 1; if($a[$i-1] == $b[$j-1]){ $x = 0; } else{ $x = 1; } $matrix[$i][$j] = min( $matrix[$i - 1][$j] + 1, $matrix[$i][$j - 1] + 1, $matrix[$i - 1][$j- 1] + $x ); } } return $matrix[count($a)][count($b)]; } echo levenshteinDistance("aaa","bbb"); ?>

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)
8.3.60.0100.00716.63
8.3.50.0100.00821.91
8.3.40.0110.00719.02
8.3.30.0110.00319.05
8.3.20.0000.00720.34
8.3.10.0040.00423.51
8.3.00.0080.00019.07
8.2.180.0060.00916.75
8.2.170.0040.01122.96
8.2.160.0110.00720.22
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0020.00526.16
8.2.120.0040.00420.89
8.2.110.0060.00322.14
8.2.100.0090.00317.75
8.2.90.0050.00319.22
8.2.80.0000.00917.97
8.2.70.0030.00517.63
8.2.60.0030.00617.80
8.2.50.0040.00418.07
8.2.40.0060.00321.25
8.2.30.0070.00018.20
8.2.20.0040.00417.57
8.2.10.0080.00017.96
8.2.00.0030.00517.76
8.1.280.0070.00725.92
8.1.270.0090.00023.91
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0060.00323.98
8.1.230.0090.00319.10
8.1.220.0040.00417.74
8.1.210.0060.00318.77
8.1.200.0050.00517.13
8.1.190.0050.00317.10
8.1.180.0000.00818.10
8.1.170.0000.00818.46
8.1.160.0030.00521.90
8.1.150.0040.00418.56
8.1.140.0040.00417.39
8.1.130.0070.00017.73
8.1.120.0030.00317.25
8.1.110.0000.00717.32
8.1.100.0000.00717.23
8.1.90.0000.00717.32
8.1.80.0000.00817.23
8.1.70.0000.00717.32
8.1.60.0060.00317.41
8.1.50.0030.00617.37
8.1.40.0040.00417.50
8.1.30.0050.00517.51
8.1.20.0040.00417.62
8.1.10.0070.00017.53
8.1.00.0050.00317.45
8.0.300.0070.00018.77
8.0.290.0030.00616.75
8.0.280.0000.00818.43
8.0.270.0040.00417.20
8.0.260.0030.00517.12
8.0.250.0030.00316.90
8.0.240.0040.00416.97
8.0.230.0030.00316.82
8.0.220.0070.00016.79
8.0.210.0070.00016.88
8.0.200.0030.00316.85
8.0.190.0030.00316.86
8.0.180.0030.00316.89
8.0.170.0000.00716.93
8.0.160.0030.00416.97
8.0.150.0040.00416.87
8.0.140.0030.00316.87
8.0.130.0030.00313.38
8.0.120.0050.00316.88
8.0.110.0000.00716.77
8.0.100.0080.00016.97
8.0.90.0000.00716.69
8.0.80.0030.01316.86
8.0.70.0070.00416.92
8.0.60.0000.00716.91
8.0.50.0030.00516.84
8.0.30.0110.00716.96
8.0.20.0080.01017.40
8.0.10.0040.00416.90
8.0.00.0130.00816.85
7.4.330.0030.00315.00
7.4.320.0000.00816.52
7.4.300.0030.00316.61
7.4.290.0070.00016.66
7.4.280.0030.00316.62
7.4.270.0000.00716.54
7.4.260.0030.00316.40
7.4.250.0040.00416.50
7.4.240.0040.00416.59
7.4.230.0070.00016.53
7.4.220.0070.01116.60
7.4.210.0070.00916.56
7.4.200.0070.00016.41
7.4.190.0070.00016.63
7.4.160.0060.00916.61
7.4.150.0070.01117.40
7.4.140.0080.01217.86
7.4.130.0080.01016.58
7.4.120.0080.01116.56
7.4.110.0050.01416.62
7.4.100.0100.01016.48
7.4.90.0120.00816.57
7.4.80.0120.00619.39
7.4.70.0030.01416.44
7.4.60.0140.00316.55
7.4.50.0000.00516.30
7.4.40.0030.01316.32
7.4.30.0080.00816.45
7.4.00.0090.01015.02
7.3.330.0000.00813.27
7.3.320.0000.00513.26
7.3.310.0000.00716.38
7.3.300.0000.00816.42
7.3.290.0080.00816.44
7.3.280.0050.01016.40
7.3.270.0100.00717.40
7.3.260.0090.00916.72
7.3.250.0120.01116.52
7.3.240.0060.01316.41
7.3.230.0120.00516.60
7.3.210.0110.00716.49
7.3.200.0100.00719.39
7.3.190.0090.01316.48
7.3.180.0100.01016.58
7.3.170.0030.01716.39
7.3.160.0000.01516.56
7.3.120.0110.00614.87
7.3.110.0070.00914.66
7.3.100.0070.00914.75
7.3.90.0060.00614.82
7.3.80.0030.01014.91
7.3.70.0030.00914.84
7.3.60.0030.00914.96
7.3.50.0050.00614.79
7.3.40.0050.00714.82
7.3.30.0070.00114.98
7.3.20.0060.00616.88
7.3.10.0070.00616.57
7.3.00.0070.00716.69
7.2.330.0090.01116.70
7.2.320.0120.00816.85
7.2.310.0090.00616.85
7.2.300.0090.00916.52
7.2.290.0110.00716.76
7.2.250.0070.01214.97
7.2.240.0090.00915.18
7.2.230.0050.01215.23
7.2.220.0020.01315.12
7.2.210.0090.00315.10
7.2.200.0030.01115.03
7.2.190.0050.00914.86
7.2.180.0020.01015.08
7.2.170.0070.00714.91
7.2.160.0080.00714.83
7.2.150.0070.00317.14
7.2.140.0000.01316.98
7.2.130.0130.00516.85
7.2.120.0040.01316.70
7.2.110.0030.01216.90
7.2.100.0090.00517.00
7.2.90.0080.00517.00
7.2.80.0020.01116.86
7.2.70.0150.00016.86
7.2.60.0060.00816.88
7.2.50.0100.00617.02
7.2.40.0130.00317.10
7.2.30.0030.00916.84
7.2.20.0080.00716.89
7.2.10.0050.00717.01
7.2.00.0110.00417.70
7.1.330.0050.01115.99
7.1.320.0060.00815.89
7.1.310.0020.01315.68
7.1.300.0070.00515.95
7.1.290.0000.01215.56
7.1.280.0070.00815.82
7.1.270.0070.00615.83
7.1.260.0040.00715.87
7.1.250.0030.01015.77
7.1.240.0030.01015.89
7.1.230.0040.00715.51
7.1.220.0040.01115.83
7.1.210.0030.00715.79
7.1.200.0050.00715.82
7.1.190.0040.01115.95
7.1.180.0000.01215.69
7.1.170.0030.00715.89
7.1.160.0080.00615.80
7.1.150.0030.00815.97
7.1.140.0080.00315.95
7.1.130.0070.00715.71
7.1.120.0000.01415.91
7.1.110.0030.01015.83
7.1.100.0070.00715.90
7.1.90.0060.00615.75
7.1.80.0040.00815.92
7.1.70.0040.00716.40
7.1.60.0080.00716.55
7.1.50.0120.00925.26
7.1.40.0000.01015.85
7.1.30.0030.01015.81
7.1.20.0140.00015.68
7.1.10.0060.00615.80
7.1.00.0060.04119.13
7.0.330.0040.00715.28
7.0.320.0040.01215.40
7.0.310.0060.00615.23
7.0.300.0030.00715.29
7.0.290.0000.01715.12
7.0.280.0060.00315.50
7.0.270.0040.01115.46
7.0.260.0070.00415.22
7.0.250.0120.00315.55
7.0.240.0030.01015.53
7.0.230.0100.00015.34
7.0.220.0000.00915.54
7.0.210.0030.00915.52
7.0.200.0030.00816.09
7.0.190.0040.00415.50
7.0.180.0000.01115.45
7.0.170.0030.00915.53
7.0.160.0030.01015.55
7.0.150.0050.00315.54
7.0.140.0070.03718.78
7.0.130.0030.00815.14
7.0.120.0060.00615.39
7.0.110.0000.01015.52
7.0.100.0130.00015.18
7.0.90.0030.01015.44
7.0.80.0030.01015.20
7.0.70.0030.01015.22
7.0.60.0040.02317.73
7.0.50.0060.04216.68
7.0.40.0080.02316.81
7.0.30.0120.02316.87
7.0.20.0120.02916.83
7.0.10.0070.02316.77
7.0.00.0100.04216.94
5.6.400.0080.00014.50
5.6.390.0120.00314.10
5.6.380.0070.00714.45
5.6.370.0040.01114.57
5.6.360.0000.01114.72
5.6.350.0030.00914.40
5.6.340.0040.00714.37
5.6.330.0080.00314.36
5.6.320.0030.00914.40
5.6.310.0090.00614.58
5.6.300.0030.00614.44
5.6.290.0070.00714.54
5.6.280.0020.04017.65
5.6.270.0000.01014.26
5.6.260.0110.00014.71
5.6.250.0030.00914.77
5.6.240.0120.00314.73
5.6.230.0030.01214.41
5.6.220.0030.00914.25
5.6.210.0030.02517.50
5.6.200.0020.02516.33
5.6.190.0070.02817.42
5.6.180.0000.03617.53
5.6.170.0150.03317.32
5.6.160.0090.04417.54
5.6.150.0050.03716.29
5.6.140.0090.02016.41
5.6.130.0070.04516.24
5.6.120.0080.03817.91
5.6.110.0070.04217.66
5.6.100.0050.04617.66
5.6.90.0020.02817.73
5.6.80.0100.04217.39
5.6.70.0000.01314.28
5.6.60.0070.00714.26
5.6.50.0000.01714.50
5.6.40.0050.00514.43
5.6.30.0040.01114.33
5.6.20.0060.00614.35
5.6.10.0030.01214.36
5.6.00.0060.00914.45
5.5.380.0000.00814.16
5.5.370.0030.01014.26
5.5.360.0080.00314.33
5.5.350.0060.04217.40
5.5.340.0110.04116.06
5.5.330.0070.04317.39
5.5.320.0120.02517.27
5.5.310.0180.03217.47
5.5.300.0070.03916.23
5.5.290.0020.03916.21
5.5.280.0100.04317.65
5.5.270.0120.03917.63
5.5.260.0030.04617.59
5.5.250.0090.03617.49
5.5.240.0040.02717.27
5.5.230.0100.00614.51
5.5.220.0060.00614.40
5.5.210.0040.01114.37
5.5.200.0070.00714.51
5.5.190.0060.00814.24
5.5.180.0030.01314.47
5.5.170.0030.01014.41
5.5.160.0030.01314.45
5.5.150.0040.00714.54
5.5.140.0030.00913.99
5.5.130.0070.00714.28
5.5.120.0060.00914.43
5.5.110.0080.00614.56
5.5.100.0040.01114.40
5.5.90.0030.00714.43
5.5.80.0060.00614.52
5.5.70.0000.01114.48
5.5.60.0030.00514.52
5.5.50.0060.00814.39
5.5.40.0000.00814.64
5.5.30.0060.00614.27
5.5.20.0030.00914.30
5.5.10.0030.00613.89
5.5.00.0100.00314.26
5.4.450.0430.04315.85
5.4.440.0150.03315.91
5.4.430.0510.03816.01
5.4.420.0530.02815.92
5.4.410.0480.04015.86
5.4.400.0570.02715.64
5.4.390.0720.03015.64
5.4.380.0110.02815.47
5.4.370.0080.03015.57
5.4.360.0120.03515.46
5.4.350.0030.03415.46
5.4.340.0090.03015.47
5.4.330.0150.00012.37
5.4.320.0070.02012.44
5.4.310.0050.02812.44
5.4.300.0100.02212.44
5.4.290.0050.02712.44
5.4.280.0060.02412.39
5.4.270.0040.02312.39
5.4.260.0050.02512.39
5.4.250.0040.02412.39
5.4.240.0070.02612.39
5.4.230.0050.02412.38
5.4.220.0090.02412.38
5.4.210.0040.02912.38
5.4.200.0050.02912.38
5.4.190.0070.02612.38
5.4.180.0040.02212.38
5.4.170.0080.01912.38
5.4.160.0060.02112.38
5.4.150.0040.02412.38
5.4.140.0020.02412.22
5.4.130.0030.02512.22
5.4.120.0070.01912.20
5.4.110.0050.02112.20
5.4.100.0040.02312.20
5.4.90.0060.02612.20
5.4.80.0060.02412.20
5.4.70.0020.02412.19
5.4.60.0040.02112.19
5.4.50.0070.01912.19
5.4.40.0040.02112.19
5.4.30.0050.02112.19
5.4.20.0080.01912.19
5.4.10.0050.02012.18
5.4.00.0070.02211.93
5.3.290.0050.02612.58
5.3.280.0070.02112.54
5.3.270.0060.02112.54
5.3.260.0030.02312.54
5.3.250.0080.01812.54
5.3.240.0090.01912.54
5.3.230.0060.02212.54
5.3.220.0070.02012.52
5.3.210.0020.02512.52
5.3.200.0070.02112.52
5.3.190.0040.02212.52
5.3.180.0020.02312.52
5.3.170.0050.02212.52
5.3.160.0050.02412.52
5.3.150.0060.02312.52
5.3.140.0080.02012.51
5.3.130.0040.02512.51
5.3.120.0060.02112.51
5.3.110.0050.02112.51
5.3.100.0020.02312.25
5.3.90.0050.02412.24
5.3.80.0020.02512.24
5.3.70.0040.02112.24
5.3.60.0030.02312.23
5.3.50.0050.02112.20
5.3.40.0050.02012.20
5.3.30.0040.02312.18
5.3.20.0050.01912.07
5.3.10.0030.02112.05
5.3.00.0080.02012.05
5.2.170.0050.0349.24
5.2.160.0080.0269.24
5.2.150.0050.0319.23
5.2.140.0090.0289.23
5.2.130.0050.0329.20
5.2.120.0070.0309.20
5.2.110.0050.0319.20
5.2.100.0040.0339.20
5.2.90.0050.0319.20
5.2.80.0070.0299.19
5.2.70.0080.0289.18
5.2.60.0100.0279.14
5.2.50.0110.0259.11
5.2.40.0050.0299.09
5.2.30.0050.0349.06
5.2.20.0090.0289.05
5.2.10.0010.0338.96
5.2.00.0040.0308.82
5.1.60.0050.0258.11
5.1.50.0050.0278.10
5.1.40.0040.0288.08
5.1.30.0030.0298.43
5.1.20.0030.0308.45
5.1.10.0060.0248.18
5.1.00.0080.0228.18
5.0.50.0070.0186.66
5.0.40.0020.0236.53
5.0.30.0030.0356.34
5.0.20.0040.0236.30
5.0.10.0040.0296.29
5.0.00.0060.0396.29
4.4.90.0020.0244.78
4.4.80.0050.0214.75
4.4.70.0020.0234.75
4.4.60.0030.0224.75
4.4.50.0020.0164.77
4.4.40.0080.0234.71
4.4.30.0030.0164.76
4.4.20.0040.0164.85
4.4.10.0020.0184.85
4.4.00.0010.0274.76
4.3.110.0050.0144.67
4.3.100.0030.0154.67
4.3.90.0050.0194.64
4.3.80.0050.0294.59
4.3.70.0030.0184.63
4.3.60.0050.0134.63
4.3.50.0030.0154.63
4.3.40.0040.0244.54
4.3.30.0020.0173.33
4.3.20.0020.0183.31
4.3.10.0020.0163.27
4.3.00.0170.0206.95

preferences:
43.26 ms | 401 KiB | 5 Q