如何使用php在数组中搜索

我试图为我的网站做一个搜索功能，但我无法让它工作。 这是我的密码：

$search_string = "html documentation";
$search_string = explode(' ', $search_string);

$array = "


  Array (
    [0] => Array (
      [0] => 404
      [1] => notfound
      [2] => error
    )

    [1] => Array (
      [0] => 403
      [1] => forbidden
      [2] => error
    )

    [2] => Array (
      [0] => home
    )

    [3] => Array (
      [0] => hcjp
      [1] => html
      [2] => css
      [3] => js
      [4] => php
      [5] => learning
      [6] => documentation
    )

    [4] => Array (
      [0] => about
    )

    [5] => Array (
      [0] => search
      [1] => search on no conditions
    )

    [6] => Array (
      [0] => search
      [1] => search on label
    )
  )

";

$search_result = in_array($search_string, $array);
print_r($search_result);

我没有得到任何输出，我的目标是得到某种路径，如：[3]，以便我知道：

$search_result[3]

包含用户请求的信息

---

谢谢

一种方法可能是在

$array

中循环数组并使用。如果存在匹配项，则从

$array

foreach ($array as $key => $a) {
    if (count(array_intersect($a, $search_string)) > 0) {
        echo $key;
    }
}

---

您编写的代码有一些问题

该函数返回一个字符串数组，即使数组中的

可以支持作为指针的数组，但您构建
$array
的方式即使不是不可能，也会让它变得非常困难。另外，您的
$array
是一个数组数组，而不是一维数组

下面的解决方案可以满足您的需要，但请记住，如果您的
$array
包含数百个子数组，那么它将不是最有效的解决方案

// get search term
$search_string = "html documentation";
// explode in on space => ['html', 'documentation']
$search_strings = explode(' ', $search_string);


$array = [
    ['404', 'not found', 'error'],
    ['403', 'forbidden', 'error'],
    ['home'],
    ['hcop', 'html', 'css', 'js', 'php', 'learning', 'documentation'],
    ...
];

// set an array that will hold your search related info
$search_result = [];

// go through the search terms i.e. html, documentation
foreach($search_strings as $term) {

    // loop through your array, $key will be the index of the sub-array and $value the sub-array itself
    foreach($array as $key => $value) {

        // if the term is in the sub-array, set the $term as key and the $key as the value
        if (in_array($term, $value)) {
            $search_result[$term] = $key;
        }

    }

}

// Array ( [html] => 3 [documentation] => 3 )
print_r($search_result);

您可以使用preg_grep，查看匹配的计数是否与输入字计数相同

$search_string = "html documentation";
$searchArr = explode(" ", $search_string);
$search_strings = "/" . implode('|', $searchArr) ."/";


$array = [
    ['404', 'not found', 'error'],
    ['403', 'forbidden', 'error'],
    ['home'],
    ['hcop', 'html', 'css', 'js', 'php', 'learning', 'documentation']
];
foreach($array as $key => $arr){
    $out = preg_grep($search_strings, $arr);
    if(count($out) == count($searchArr)){
        echo "match in key $key!\n";
        var_dump($arr);
    }
}