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

-1 vote317 views1 answer
Returning JSON from a PHP Script
PHP
2 votes351 views1 answer
Php beginner project ideas
PHP
0 vote309 views1 answer
When WYSIWYG fields remove paragraph tag
PHP
1 vote345 views1 answer
Limiting requests to controllers in laravel
PHP Laravel
6 votes327 views2 answers
Laravel generate key
PHP Laravel
9 votes296 views4 answers
Composer require laravel/ui laravel 7
PHP
0 vote400 views1 answer
Calculate average in eager loading laravel
PHP Laravel
0 vote314 views1 answer
Laravel model relationships with two columns match
PHP
0 vote266 views1 answer
Php artisan serve lumen
PHP
0 vote326 views1 answer
How to excluse csrf in a route laravel
PHP