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run code in 150+ php & hhvm versions
Bugs & Features
<?php function levenshteinDistance($a, $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("aqq","att"); ?>
Output for 5.3.0 - 5.4.30
Parse error: syntax error, unexpected ':' in /in/oMvaM on line 20
Process exited with code 255.