/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

0 vote294 views3 answers
Best wordpress functions to include
PHP Wordpress
-1 vote274 views2 answers
Show date php
PHP
0 vote203 views1 answer
Get post data in laravel
PHP Laravel
0 vote185 views1 answer
Laravel retry failed transactions
PHP
1 vote191 views2 answers
Laravel add attribute to model
PHP Laravel
0 vote231 views1 answer
Laravel DB facade relations
PHP Laravel
0 vote294 views1 answer
Laravel eloquent update quantity
PHP Laravel
0 vote178 views1 answer
Hook into admin add order item / product on add/submit
PHP
0 vote172 views1 answer
Lavavel nova toggle
PHP
0 vote215 views1 answer
Php remove characters not numbers or letters
PHP