/PHP/How to prevent the Undefined index in php

How to prevent the Undefined index in php

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

How to prevent the Undefined index in php

// Before using $_POST['value']    if (isset($_POST['value']))    {              // Instructions if $_POST['value'] exist    }

Source: ccm.net

Similar codes

1 vote301 views1 answer
Php insert array into mysql table
PHP
0 vote316 views1 answer
Codeigniter update or create
PHP
4 votes295 views2 answers
Laravel hash::check
PHP
8 votes473 views4 answers
Codeigniter 4 redirect to home
PHP CodeIgniter
6 votes329 views2 answers
Php array_values
PHP
3 votes320 views3 answers
Url in laravel
PHP
4 votes308 views4 answers
Php get data from api
PHP
0 vote301 views1 answer
Send var in header php
PHP
1 vote386 views1 answer
Static function model laravel
PHP Laravel
1 vote315 views1 answer
How to json_encode an array in php unexpected identifier
PHP