How do you know the defination of array and thier list in such variable ?

[linux1880]

Hi friends i am trying to add some feature in one script, I see everywhere in the script like $data_set["something"] and $another_set["another_thing"] like that, how do i actually know where in the script has this array defined ? Or is that array referring to a table with all the fields ? Or can people define such array on the fly and assume variables as they want ? Please help. Thank you.

[ToonMariner]

search your code for it - it could be set in code that is included - so search you entire project for that array and see what it throws out.

[linux1880]

well, searched but could not find any place where he has defined those array variables. They have also used lots session variables like $_SESSION['yeah_right'],  $SESSION['oh_no'] ... and blah are they need to be defoened as well or we can assigm anything on the fly ? Sorry for the stupid questions as i am new to php and this community. Thanks

[Alex]

It's possible the array was never explicitly defined. Doing something like this:

 

<?php
$foo['bar'] = 'foobar';

 

Is completely valid. Though, it's usually a good idea to define your arrays somewhere as not to create confusion if someone else is looking over your code.