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<?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($b)]; } echo levenshteinDistance("aaa","bbb"); ?>
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
a = aaa,b = bbb Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, string given in /in/YFLHA:4 Stack trace: #0 /in/YFLHA(32): levenshteinDistance('aaa', 'bbb') #1 {main} thrown in /in/YFLHA on line 4
Process exited with code 255.
Output for 8.0.0 - 8.0.9
a = aaa,b = bbb Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, string given in /in/YFLHA:4 Stack trace: #0 /in/YFLHA(32): levenshteinDistance('aaa', 'bbb') #1 {main} thrown in /in/YFLHA on line 4
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
a = aaa,b = bbb Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 4 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 5 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 6 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 5 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 6 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 5 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 8 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 8 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 8 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 11 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 11 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 11 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 14 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 15 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 15 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 14 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 30 Warning: count(): Parameter must be an array or an object that implements Countable in /in/YFLHA on line 30 1
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
a = aaa,b = bbb1
preferences:
270.12 ms | 404 KiB | 458 Q