PHP operates strings and arrays to implement similarity algorithm-PHP Tutorial-php.cn

This article mainly introduces the method of querying the string with the highest similarity in PHP. It involves the techniques of PHP operating strings and arrays to implement similarity algorithms. It has certain reference value. Friends in need can refer to it

The example of this article describes the method of querying the string with the highest similarity in PHP. The details are as follows:

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. Code example 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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