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 vote180 views1 answer
How to retrieve value from stdclass array in php
PHP
0 vote168 views1 answer
Toarray php
PHP
30 votes172 views6 answers
Laravel insert
PHP
23 votes165 views4 answers
Laravel change foreign key name
PHP
0 vote166 views1 answer
Redirect 404 in laravel
PHP Laravel
0 vote154 views2 answers
Yii2 set cookie
PHP
3 votes166 views2 answers
Smarty assign var
PHP
2 votes159 views2 answers
Get relationship data from soft delete laravel
PHP
0 vote187 views2 answers
How to back the page laravel where the scorll is
PHP Laravel
1 vote165 views1 answer
Php sql last 10 rows
PHP