Php key in array exists

<?php
$search_array = array('first' => null, 'second' => 4);

// returns false
isset($search_array['first']);

// returns true
array_key_exists('first', $search_array);
?>

Source: php.net

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);

Check array has keys in php

<?php

// The values in this arrays contains the names of the indexes (keys) 
// that should exist in the data array
$required = array('key1', 'key2', 'key3');

$data = array(
    'key1' => 10,
    'key2' => 20,
    'key3' => 30,
    'key4' => 40,
);

if (count(array_intersect_key(array_flip($required), $data)) === count($required)) {
    // All required keys exist!
}

Source: stackoverflow.com

Similar codes

6 votes142 views2 answers
Php empty object
PHP
0 vote142 views1 answer
Displaying laravel error in below input field
PHP
0 vote173 views1 answer
Php detect crawler
PHP
2 votes284 views1 answer
Start server symfony command
PHP Symfony
0 vote191 views1 answer
Wp query meta in array
PHP Wordpress
0 vote134 views2 answers
How to print string plus variable in php
PHP
0 vote145 views1 answer
Wordpress disable file mods
PHP Wordpress
0 vote170 views1 answer
Laravel list unique indexes
PHP Laravel
0 vote138 views1 answer
Woocommerce set default shipping country
PHP
0 vote138 views1 answer
Geoip php sample
PHP