如何排序相似度就输入的字的数组。 [英] How to sort an array by similarity in relation to an inputted word.

问题描述

我有PHP阵列上，例如：

I have on PHP array, for example:

$arr = array("hello", "try", "hel", "hey hello");

现在我想做的事情，这将是基于阵列和我的$搜索VAR之间最密切的近字阵列的重新排列。

Now I want to do rearrange of the array which will be based on the most nearly close words between the array and my $search var.

我怎么能这样做？

推荐答案

您可以使用莱文斯坦功能

<?php
// input misspelled word
$input = 'helllo';

// array of words to check against
$words  = array('hello' 'try', 'hel', 'hey hello');

// no shortest distance found, yet
$shortest = -1;

// loop through words to find the closest
foreach ($words as $word) {

    // calculate the distance between the input word,
    // and the current word
    $lev = levenshtein($input, $word);

    // check for an exact match
    if ($lev == 0) {

        // closest word is this one (exact match)
        $closest = $word;
        $shortest = 0;

        // break out of the loop; we've found an exact match
        break;
    }

    // if this distance is less than the next found shortest
    // distance, OR if a next shortest word has not yet been found
    if ($lev <= $shortest || $shortest < 0) {
        // set the closest match, and shortest distance
        $closest  = $word;
        $shortest = $lev;
    }
}

echo "Input word: $input\n";
if ($shortest == 0) {
    echo "Exact match found: $closest\n";
} else {
    echo "Did you mean: $closest?\n";
}

?>

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