Php key_exists

Php key exists

// Here's our fruity array
$fruits = ['apple', 'pear', 'banana'];

// Use it in an `if` statement
if (array_key_exists("banana", $fruits)) {
 // Do stuff because `banana` exists
}

// Store it for later use
$exists = array_key_exists("peach", $fruits);

Keys of array exist in array

function findKey($array, $keySearch)
{
    foreach ($array as $key => $item) {
        if ($key == $keySearch) {
            echo 'yes, it exists';
            return true;
        } elseif (is_array($item) && findKey($item, $keySearch)) {
            return true;
        }
    }
    return false;
}

Source: stackoverflow.com

Php key_exists

PHP function key_exists($key, array $array) bool
------------------------------------------------
Checks if the given key or index exists in the array. The name of this function is array_key_exists() in PHP > 4.0.6.

Parameters:
int|string--$key--Value to check.
array--$array--An array with keys to check.
  
Returns:true on success or false on failure.

Similar codes

0 vote269 views1 answer
How to search locations in php using ajax google script
PHP
0 vote328 views1 answer
Php get current dir mac
PHP
0 vote253 views1 answer
Php thread safe or non thread safe
PHP
5 votes344 views2 answers
StartsWith() and endsWith() functions in PHP
PHP
4 votes345 views2 answers
Laravel session forget
PHP Laravel
0 vote330 views1 answer
Laravel 6 use username on url
PHP Laravel
0 vote409 views1 answer
Symfony flash message
PHP Symfony
1 vote347 views4 answers
How to fix 419 page expired in laravel
PHP Laravel
-1 vote344 views1 answer
Store a variable in session and echo that variable on a page wordpress
PHP Wordpress
0 vote346 views1 answer
Execute sql query codeigniter
PHP CodeIgniter