[SOLVED] variables variable

[dennismonsewicz]

can someone explain what a variable's variable is used for? I have read up on it but it doesn't make sense

[premiso]

In what sense?

 

Are you referring to the $$ command?

 

Really this should not be used, but here is an example:

<?php
$varname = "var1";
$var1 = "bob";
echo $$varname;
?>

 

The above should echo "bob", however this is why we have arrays...

<?php
$varname = array("var1" => "bob");
echo $varname["var1"];
?>

 

Same logic.

[dennismonsewicz]

ah gotcha... it just doesn't make sense to use.. at least to me.. doesn't seem like there is a need for it.

[PFMaBiSmAd]

Also, variable variables are three times slower than using an array.