If don't exist key json php

<?php
$search_array = array('first' => 1, 'second' => 4);
if (array_key_exists('first', $search_array)) {
    echo "The 'first' element is in the array";
}
?>

Source: php.net

Similar codes

1 vote262 views1 answer
Laravel number add 0 before
PHP Laravel
0 vote223 views1 answer
Php xpath attribute exact
PHP
0 vote260 views1 answer
Dropdown in crud application YII
PHP Yii
8 votes227 views6 answers
Laravel command not found
PHP
8 votes235 views2 answers
Store file into specific directory laravel using storage facade
PHP
0 vote321 views3 answers
Email or phone required in laravel
PHP
0 vote310 views4 answers
Image Upload in Laravel
PHP Laravel
1 vote224 views1 answer
Include a file in laravel controller
PHP
0 vote192 views1 answer
Get wordpress id
PHP
0 vote241 views1 answer
PHP Create Swiss QR-Bill API
PHP