Question

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Can php variable hold harmfull code safely?

Let’s say I have array named $content. The array holds harmfull data.

Is it safe to do the following?

$test = count($content);
echo $test;

Would count() somehow execute the harmfull data?

Answer 1

Long story short: no worries.

Short story long:

Count will return an int, and should not execute anything. It’s not a really complicated function, so I doubt it could even have such a bug, but the facts are

1. it should not execute anything
2. if it does, this is a bug.
3. it is never reported as far as I can see that it did.
4. therefore there is no real reason to think it is a risk.
5. If you still think it can, you can look up the source code for a check ofcourse