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

2 votes111 views3 answers
Php knoww if array has duplicate values
PHP
2 votes118 views1 answer
Laravel https assets
PHP Laravel
1 vote122 views1 answer
Remove add media button wordpress editor
PHP Wordpress
7 votes111 views3 answers
Route parameter type laravel
PHP
0 vote130 views1 answer
Call to undefined method CI_DB_mysqli_result::order_by()
PHP
8 votes123 views3 answers
What is route namespace in laravel
PHP Laravel
0 vote161 views1 answer
Laravel parse markdown
PHP
0 vote105 views5 answers
Localhost/comparison operator.php
PHP
0 vote94 views1 answer
Pagination javascript php
PHP
3 votes65 views1 answer
Laravel foreach index
PHP