Variable global variable?

Question

I'm trying to automatically sanitize input on an array of global variables like so:

$sanitize = array('_POST', '_GET', '_REQUEST', '_COOKIE', '_SESSION');
foreach($sanitize as $type){
    $property = trim(strtolower($type), '_');
    $this->$property = $this->cleanse($$type);
}

But I get: Notice: Undefined variable: _REQUEST (and so on for all of the global variables I'm trying)

Is doing what I'm trying to accomplish actually possible?

Thanks.

Works on php 5.3 here. Not that it should. variable variables are inherently evil. — Marc B, Feb 23 '12 at 05:39
okay, here is an explanation you asked for. [What's the best method for sanitizing user input with PHP?](http://stackoverflow.com/questions/129677/whats-the-best-method-for-sanitizing-user-input-with-php) — Your Common Sense, Feb 23 '12 at 05:50

score 2 · Accepted Answer · answered Feb 23 '12 at 05:37

2

Doing this on a global scale is typically frowned upon.

I'd recommend using some of PHP's built in Filters to achieve what you want at a local level. That is just filter what you need as you need it.

answered Feb 23 '12 at 05:37

Jason McCreary

71,546
23
135
174

Variable global variable?

1 Answers1