Php array has key

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);

Php array index 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);// Return it directlyreturn array_key_exists("pineapple", $fruits);

Php array has key

array_key_exists('key', $your_array);

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

0 vote256 views2 answers
Declare variable in view for loop laravel
PHP Laravel
0 vote178 views1 answer
Php script auf serve alle 5 minuten ausführen
PHP
1 vote193 views1 answer
Array con php
PHP
0 vote134 views1 answer
150 charachter display only php
PHP
4 votes187 views2 answers
Laravel session forget
PHP
102 votes244 views6 answers
Php string replace
PHP
-2 votes184 views3 answers
Laravel when condition
PHP
0 vote189 views1 answer
Wpmu create user
PHP
0 vote177 views1 answer
Laravel check if postback
PHP
0 vote209 views1 answer
Pagination in codeigniter with example
PHP CodeIgniter