Problem with $ _POST, $ _ GET ... with double dollar

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Problem with $ _POST, $ _ GET ... with double dollar

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#1 by (2 votes)

3

I have this code to validate security:

$tipos = array('$_POST','$_GET','$_COOKIE','$_SESSION','$_FILES');
foreach($tipos as $tipo){
    if ( isset($$tipo) && !empty($$tipo) ) {
        foreach ($$tipo as $key => $item) {
            $tipo[$key] = $this->security->xss_clean($item);
        }
    }
}

It gives me error of undefined variable, I know I could validate it one by one, but is there solution like this?

php

asked by Alex Alberich 27.09.2018 в 16:55

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1 answer

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score 2 · Accepted Answer

In the second foreach you should use $$tipo[$key] instead of $tipo[$key] and your array types should not have $ . It should look like this:

$tipos = array('_POST','_GET','_COOKIE','_SESSION','_FILES');
foreach($tipos as $tipo){
    if ( isset($$tipo) && !empty($$tipo) ) {
        foreach ($$tipo as $key => $item) {
            $$tipo[$key] = $this->security->xss_clean($item);
        }
    }
}