/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

6 votes239 views1 answer
Laravel bootstrap ui
PHP Laravel
0 vote230 views1 answer
Imagefont.truetype python don't work
PHP
3 votes235 views2 answers
Get image width and height in laravel
PHP
7 votes237 views5 answers
Laravel foreach loop index
PHP Laravel
0 vote223 views2 answers
How to get just the first row from a table in laravel
PHP
1 vote237 views2 answers
Extract images from a folder in php
PHP
-1 vote234 views3 answers
@parent, @include, @show blade in laravel
PHP Laravel
0 vote231 views1 answer
1.0E-6 to decimal in php
PHP
0 vote222 views2 answers
Str lower laravel
PHP
2 votes243 views1 answer
How to use multiple where condition in codeigniter
PHP CodeIgniter