varable varable help cheers.

[redarrow]

 

Advance thank you.

 

Hi all i am learning varable varable now as what i can see

but dont no, If i am correct the consept is that a

set varable name can also be used as another set varable with

the same set varable name?

 

please give more examples and am i correct cheers.

 

<?php

// set a varable john to 32
$john=32;

//set varable to name john
$name="john";

//echo out varable name as john then varable varable echo age
echo "My name is $name and my age is ${$name}";

?>

 

i sort of get the concept but what will it acheve in programming in php cheers.

[.josh]

well, what's the principle behind variables? Variables abstract data.  Variable variables are the same principle, but taken one step further.  Variable variables abstract variable names.

[redarrow]

can u kindly give a small snippet exaple plesae thank u more understanding now cheers.

[Jessica]

...

Your example is a "small snippet."

[.josh]

well, the manual has some examples...

[JasonLewis]

i never really used it. its all a bit confusing to me. it could end up becoming to confusing.

[redarrow]

That my point about varable varable to confusing but unfortuntly it in the php exam so i need also to learn it but i agree.

[JasonLewis]

dang. although from reading the manual it does seem alright, but i dont really see the point. if you left your code for a while then came back you'd be buggered. variables jumping all over the place.

[.josh]

LoL, it's not really THAT hard... I mean, you use variables to push data all over the place and manipulate it etc... in the first place. It really is the same concept.  It is good for things where you don't necessarily know what all of the variables would be.  Like for instance, making a configuration file for your program...kind of like php.ini, actually.  Turning certain flags/options on/off will create/not create x amount of variables with whatever names.  You wouldn't want to waste the memory by creating variables you aren't going to use, would you?  But you don't know what the user will turn on/off.  That's where variable variables come in.