Question

我目前正在尝试找到两个字符串匹配的字数的百分比

这个想法是你将一个字符串与另一个字符串匹配，得到它们有多相似的百分比。

我现在所拥有的是一个粗略的想法，并想知道我是否能得到一些帮助我们的想法是将每个字符串转换为一个数组，您可以逐个遍历列表，如果匹配则添加1到$匹配，如果没有匹配则添加0

<?php>
$originalText = "The quick brown fox jumps over the lazy dog";
$comparisonText = "The quick red fox leaps over the sleeping dog";
//to get a count the number of words we are trying to match
$strNum = str_word_count($originalText);

$arroriginalText = explode(" ", $originalText);
$arrcomparisonText = explode(" ", $comparisonText);

//THIS IS WHERE I'M STUCK
//creating some form of a loop to go through the array of strings

if (preg_match("*word from $arroriginalText*, *word from $arrcomparisonText*", $matches)) {
//not fully understanding what to put here
}

//i'm bad at maths
$strNum - $matches = $percentageFind
$percentageFind / $strNum = $decimal
$decimal * 100 = $theAnswer
?>

我不确定我是否已经做出了我想清楚的事情，但是我会非常感激任何帮助。

Answer 1

$matches = 0;

if( empty( $arroriginalText ) ) {
  echo 'Empty';
  die();
}

for( $n = 0; $n < count( $arroriginalText ); $n++ ) {
  if( $arrcomparisonText[$n] === $arroriginalText[$n] ) {
     $matches++;
  }
}

$percentage = 100 * $matches / count( $arroriginalText );

或更好（未经测试）

$percentage = count( array_diff( $arroriginalText, $arrcomparisonText ) ) / count( $arroriginalText );

PHP - 文本匹配

1 个答案: