How to query similar strings in php-PHP Tutorial-php.cn

How does PHP match the string with the highest similarity in the string pool? This article mainly introduces the method of querying the string with the highest similarity in PHP, and involves the techniques of PHP operating strings and arrays to implement similarity algorithms. I hope it will be helpful to everyone.

According to the incoming string and array, return the string with the highest similarity in the array

1. The PHP code is as follows:

function closest_word($input, $words) { $shortest = -1; foreach ($words as $word) { $lev = levenshtein($input, $word); if ($lev == 0) { $closest = $word; $shortest = 0; break; } if ($lev <= $shortest || $shortest < 0) { $closest = $word; $shortest = $lev; } } return $closest; }

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2. The code example is as follows:

// 根据传入的州名（可能客户有输错），返回相似度最高的州名称 $united_state_list = array( 'AL'=>"Alabama", 'AK'=>"Alaska", 'AZ'=>"Arizona", 'AR'=>"Arkansas", 'CA'=>"California", 'CO'=>"Colorado", 'CT'=>"Connecticut", 'DE'=>"Delaware", 'DC'=>"District Of Columbia", 'FL'=>"Florida", 'GA'=>"Georgia", 'HI'=>"Hawaii", 'ID'=>"Idaho", 'IL'=>"Illinois", 'IN'=>"Indiana", 'IA'=>"Iowa", 'KS'=>"Kansas", 'KY'=>"Kentucky", 'LA'=>"Louisiana", 'ME'=>"Maine", 'MD'=>"Maryland", 'MA'=>"Massachusetts", 'MI'=>"Michigan", 'MN'=>"Minnesota", 'MS'=>"Mississippi", 'MO'=>"Missouri", 'MT'=>"Montana", 'NE'=>"Nebraska", 'NV'=>"Nevada", 'NH'=>"New Hampshire", 'NJ'=>"New Jersey", 'NM'=>"New Mexico", 'NY'=>"New York", 'NC'=>"North Carolina", 'ND'=>"North Dakota", 'OH'=>"Ohio", 'OK'=>"Oklahoma", 'OR'=>"Oregon", 'PA'=>"Pennsylvania", 'RI'=>"Rhode Island", 'SC'=>"South Carolina", 'SD'=>"South Dakota", 'TN'=>"Tennessee", 'TX'=>"Texas", 'UT'=>"Utah", 'VT'=>"Vermont", 'VA'=>"Virginia", 'WA'=>"Washington", 'WV'=>"West Virginia", 'WI'=>"Wisconsin", 'WY'=>"Wyoming" ); $input_state = 'Wiscsin'; $state = closest_word($input_state ,array_values($united_state_list)); echo $state;

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