首先显示最佳匹配

Question

$input = "work is hard";   

if(preg_match(  "/(work|shift|useful)/i",$input)){
$match[]= "this is not better match";
}

if(preg_match(  "/(how|work|can|be|really|really|hard)/i",$input)){
$match[]= "this is better match";   // i want this match to appear first.
}

如果我有多个 preg_match 并且其中有多个单词与输入匹配，我如何才能让它显示匹配最多的单词。现在，它只是按顺序显示它。这是它的输出方式

<?php
if(!empty($match)) {
foreach ($match as $r) {
    echo "<li>$r</li>\n";
 
}
}
?>

Answer 1

将输入字符串拆分为一个单词数组，然后将 array_intersect 与您感兴趣的单词集一起使用，然后比较生成的数组的长度以确定最佳匹配。

Answer 2

试试这个：

$input = "work is hard";            
$reg = array( "First match"=>"/(work|shift|useful)/i","second match"=>"/(how|work|can|be|really|really|hard)/i");
foreach($reg as $index=>$val){
    $count[] = preg_match_all($val,$input);
}
foreach($count as $i){
    $max = max($count);
    $key = array_search($max,$count); 
    $allKeys = array_keys($reg);
    echo "The Best Match is:  ".$allKeys[$key]."<br>"; 
    $del = array_search($max,$count);
    unset($count[$del]);
}

首先显示最佳匹配

Display best match first

php

preg-match