Safely parsing complex permutations of $_POST data

Safely parsing complex permutations of $_POST data - Printable Version

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Safely parsing complex permutations of $_POST data - El Forum - 03-27-2010

[eluser]antonumia[/eluser]
hi all,

I have a complex form which posts to ci for processing.

My problem is that there will be various permutations of fields sent for final processing at the moment there are 10-20 initial premutations with up to 10 subpermutations.

Can anyone suggest a safe way of dealing with variable fields in the $_POST data without having to write a endless switch statements dealing with every permutation.

thanks

anton

Safely parsing complex permutations of $_POST data - El Forum - 03-27-2010

[eluser]Tominator[/eluser]
Hello,
you can make function like this:

Code:
function MakeMeSave(&$input) {

   if(is_array($input)) { 

      array_walk_recursive($input,"SaveValue"); 

   } else { 

      safetyValue($input); 

   } 

}

function SaveValue(&$value) {

   if (get_magic_quotes_gpc()) {

      $value = stripslashes($value);

   }

   $value = htmlspecialchars($value);

   $value = str_replace("'", "'", $value);

   $value = str_replace("\\", "\\\\", $value);

   $value = str_replace("%", "%", $value);

   $value = trim($value);

}

And then in your code you can call just:

Code:
MakeMeSave($POST);

It will work correctly in PHP5. If would you like to make max-lenght limit, you can just add line.