skipe $_POST in php

Question

i have a php page which i should post some data to it like this:

$player=$_POST['player']; $age=$_POST['age']; $data=$_POST['data'];

but some times my page posts data and some times it shouldn't, when i dont post data i got Undefined index: error, is there any way to skip $_POST['data'] when no data is posted?

Answer 1

Use simple if (isset($_POST['key'])):

$player = isset($_POST['player']) ? $_POST['player'] : '';
$age = isset($_POST['age']) ? $_POST['age'] : '';
$data = isset($_POST['data']) ? $_POST['data'] : '';

Or better, but every value to some 'refix':

<input name="Data['player']"/>

and in php just do:

if (isset($_POST['Data'])) {
     $player = $_POST['Data']['player'];
     /* ... */
}