PHP Multidimensional Array Check if specific array key

Today, We want to share with you PHP Multidimensional Array Check if specific array key and value exists.In this post we will show you Check if specific array key exists in multidimensional array, hear for Checks if the given key or index exists in the array we will give you demo and example for implement.In this post, we will learn about php search multidimensional array for key and return value with an example.

PHP Multidimensional Array Check if specific array key and value exists

There are the Following The simple About PHP Multidimensional Array Check if specific array key and value exists Full Information With Example and source code.

As I will cover this Post with live Working example to develop PHP: Check if value and key exist in multidimensional array, so the php search multidimensional array for key and return value for this example is following below.

Example 1 : PHP Check if value and key exist in multidimensional array

Check if specific array key exists in multidimensional array with Example

 Array
    (
        'memberid' => '100',
        'name' => 'Virat Kohali',
        'url' => 'www.infinityknow.com'
    ),

'1' => Array
    (
        'memberid' => '4565',
        'name' => 'Narendra modi',
        'pic_square' => 'www.w3schools.com'
    ),

'2' => Array
    (
        'memberid' => '98225',
        'name' => 'Amitab bachaan',
        'pic_square' => 'www.example.com'
    )
);
?>


if(array_search(100, array_column($members, 'memberid')) !== False) {
    echo "FOUND";
} else {
    echo "Not Found";
}

php check multidimensional array for duplicate values

To check a multidimensional array for duplicate values in PHP, you can use a combination of the array_column() and array_unique() functions.

The array_column() function returns the values from a single column of the input array, and the array_unique() function removes duplicate values from an array. By using these functions together, you can check if there are any duplicate values in a specific column of your multidimensional array.

Here’s an example:

 1, 'name' => 'John'),
    array('id' => 2, 'name' => 'Jane'),
    array('id' => 3, 'name' => 'John'),
    array('id' => 4, 'name' => 'Mary')
);

// Check for duplicate names
$names = array_column($my_array, 'name');
$unique_names = array_unique($names);

if (count($names) != count($unique_names)) {
    echo "There are duplicate names in the array.";
} else {
    echo "There are no duplicate names in the array.";
}
?>

In this example, we have a multidimensional array $my_array that contains some data. We want to check if there are any duplicate values in the name column of this array.

First, we use the array_column() function to extract the values from the name column of the array. Then, we use the array_unique() function to remove any duplicate values from this array.

Finally, we compare the length of the original array ($names) with the length of the unique array ($unique_names). If these lengths are not equal, it means that there are duplicate values in the name column of the array.

Example 2 : PHP Check multidimensional Array

Check if specific array key exists in multidimensional array – PHP

 array(),
    '24' => array(
        '202' => array(),
        '25' => array(
            '260' => 'exists'
        )
    )
);

var_dump(checkMultupleKey($member, 202));
var_dump(checkMultupleKey($member, 230));
var_dump(checkMultupleKey($member, 260));

function checkMultupleKey(array $member, $key) {

    // is in base main array check?
    if (array_key_exists($key, $member)) {
        return true;
    }

    // check if all An arrays data  in this array
    foreach ($member as $pelm) {
        if (is_array($pelm)) {
            if (checkMultupleKey($pelm, $key)) {
                return true;
            }
        }

    }

    return false;
}

output

bool(true)
bool(false)
bool(true)
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