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                [TOC] ## 實例 ### 輸出錯誤,猜測輸入的值 ``` // 輸入拼寫錯誤的單詞 $input = 'carrrot'; // 要檢查的單詞數組 $words = array('apple','pineapple','banana','orange', 'radish','carrot','pea','bean','potato'); // 目前沒有找到最短距離 $shortest = -1; // 遍歷單詞來找到最接近的 foreach ($words as $word) { // 計算輸入單詞與當前單詞的距離 $lev = levenshtein($input, $word); // 檢查完全的匹配 if ($lev == 0) { // 最接近的單詞是這個(完全匹配) $closest = $word; $shortest = 0; // 退出循環;我們已經找到一個完全的匹配 break; } // 如果此次距離比上次找到的要短 // 或者還沒找到接近的單詞 if ($lev <= $shortest || $shortest < 0) { // 設置最接近的匹配以及它的最短距離 $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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