Php undefined index meaNING

Php undefined index

// Your array index has no value or is not referencing anything,
// The easiest way to overcome this is to simply check whether
// it has been defined
if (isset($arr[$i])) {
	// Do something
}

Php undefined index meaNING

$_SESSION['yy'] = isset($_POST['yy']) ? $_POST['yy'] : "";     // This is on line 11
$_SESSION['mm'] = isset($_POST['mm']) ? $_POST['mm'] : "";     // This is on line 12
$_SESSION['dd'] = isset($_POST['dada']) ? $_POST['dada'] : ""; // This is on line 13

Source: stackoverflow.com

Similar codes

0 vote265 views2 answers
Smarty if
PHP
14 votes303 views5 answers
Laravel eloquent get last record
PHP
2 votes301 views2 answers
404 page in laravel
PHP Laravel
2 votes327 views2 answers
How get query from url in laravel
PHP Laravel
1 vote268 views1 answer
Carbon two day ago
PHP
1 vote273 views1 answer
Calling itself a static function in php
PHP
2 votes294 views2 answers
Composer require laravel/ui not working laravel 7
PHP
1 vote311 views2 answers
Showing from to in larvel pagination
PHP
0 vote264 views1 answer
Wp_localize_script
PHP
1 vote274 views1 answer
How to check mobile or desktop in php
PHP