在多维数组中查找值和键

Question

I have the following array:

Array ( 
    [0] => Array ( 
        [word] => 1 
        [question] => php 
        [position] => 11 
    )
    [1] => Array ( 
        [word] => sql 
        [question] => 1 
        [position] => 22 
    ) 
)

I need to find if [position] => 22 exists in my array and retain the array path for further reference. Thank you.

Answer 1

Example of code for the solution "Ancide" provide.

$found = false;

foreach ($array as $array_item) {
    if (isset($array_item['position'] && $array_item['position'] == "22")) {
        $found = true;
        break;
    }
}

Answer 2

You can try this code:

$array = array 
( 
    array ( 
        "word" => 1,
        "question" => php,
        "position" => 11 
    ),
    array ( 
        "word" => sql,
        "question" => 1,
        "position" => 22 
    ) 
);

foreach($array as $item)
{
    foreach($item as $key=>$value)
    {
        if($key=="position" && $value=="22")
        {
           echo "found";
        }
    }
}

Answer 3

First check if they key exists using isset , then if the key exists, check that the value is equal to your compare value.

Edit: I missed that there were two arrays. To solve this, iterate through each array and do the check in each cycle. If the check is positive you know which array it is by looking at the current index.

Answer 4

我认为没有其他解决方案比循环数组检查是否存在关键“位置”和值“22”

Answer 5

Try with this function:

function findKey($array, $mykey) {
    if(array_key_exists($mykey, $array))
        return true;

    foreach($array as $key => $value) {
        if(is_array($value))
            return findKey($value, $mykey);
    }

    return false;
}

if(findKey($search_array, 'theKey')) {
    echo "The element is in the array";
} else {
    echo "Not in array";
}

Answer 6

Try this:

function exists($array,$fkey,$fval)
{
foreach($array as $items)
{
   foreach($items as $key => $val)
     if($key == $fkey and $val == $fval)return true;
}
return false;
}

Example:

if(exists($your_array,"position",22))echo("found");

Answer 7

This will solve your problem:

<?php

foreach ($array as $k => $v) {
    if(isset($v['position']) && $v['position'] == 22) {
    $key = $k;  
    }
}
echo $key;

//$array[$key]['position'] = 22

?>

Answer 8

function findPath($array, $value) {
    foreach($array as $key => $subArray)  if(subArray['position'] === $value) return $key;
    return false;  // or whatever if not found
}


echo findPath($x, 22);  //  returns 1


$x= Array ( 
    [0] => Array ( 
        [word] => 1 
        [question] => php 
        [position] => 11 
    )
    [1] => Array ( 
        [word] => sql 
        [question] => 1 
        [position] => 22 
    ) 
)