This can be done with symbolic references. Be careful as symbolic references can be dangerous. This code will not run with "use strict". 
@vars =("num", "alpha" );
$num=1; 
$alpha="a";

foreach(@vars){
  @$_=$$_;
}

[download]
Now that I've shown you how... don't ever use symbolic references. As merlyn pointed out above, there are better ways to have a functionally equivalent end result that aren't nearly as nasty or error-prone. 
my %vars=(num => 1, alpha => 'a');

my %h;
foreach(keys %vars){
  $h{$_}=[$vars{$_}];
}

[download]
The syntax for accessing the arays is slightly different (because of the extra level of indirection in there), but this is a much cleaner and less error-prone approach.

In reply to Re: push with variable substitution ? by lhoward
in thread push with variable substitution ? by Anonymous Monk

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