PHP删除数组中的重复单词 [英] php remove duplicate words in an array

问题描述

对不起，英语不是我的母语，也许标题不太好.我想做这样的事情.

Sorry for English is not my mother language, maybe the question title is not quite good. I want to do something like this.

$str = array("Lincoln Crown","Crown Court","go holiday","house fire","John Hinton","Hinton Jailed");

这是一个数组，"Lincoln Crown"包含"Lincoln"和"Crown"，因此删除包含这2个单词的下一个单词，并且"Crown Court(包含Crown)"已被删除.

here is an array, "Lincoln Crown" contain "Lincoln" and "Crown", so remove next words, which contains these 2 words, and "Crown Court(contain Crown)" has been removed.

在另一种情况下."John Hinton"包含"John"和"Hinton"，因此已删除"Hinton Jailed(包含Hinton)".最终输出应如下所示:

in another case. "John Hinton" contain "John" and "Hinton", so "Hinton Jailed(contain Hinton)" has been removed. the final output should be like this:

$output = array("Lincoln Crown","go holiday","house fire","John Hinton");

因为我的php技能不好，不能简单地使用array_unique()array_diff()，所以请提出一个帮助的问题，谢谢.

for my php skill is not good, it is not simply to use array_unique() array_diff(), so open a question for help, thanks.

推荐答案

我认为这可能有效:P

I think this might work :P

function cool_function($strs){
    // Black list
    $toExclude = array();

    foreach($strs as $s){
        // If it's not on blacklist, then search for it
        if(!in_array($s, $toExclude)){
            // Explode into blocks
            foreach(explode(" ",$s) as $block){
                // Search the block on array
                $found = preg_grep("/" . preg_quote($block) . "/", $strs);
                foreach($found as $k => $f){
                    if($f != $s){
                        // Place each found item that's different from current item into blacklist
                        $toExclude[$k] = $f;
                    }
                }
            }
        }
    }

    // Unset all keys that was found
    foreach($toExclude as $k => $v){
        unset($strs[$k]);
    }

    // Return the result
    return $strs;
}

$strs = array("Lincoln Crown","Crown Court","go holiday","house fire","John Hinton","Hinton Jailed");
print_r(cool_function($strs));

转储:

Array
(
    [0] => Lincoln Crown
    [2] => go holiday
    [3] => house fire
    [4] => John Hinton
)

这篇关于PHP删除数组中的重复单词的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！