Behold, PHP's infamous type juggling strikes again! The meme shows how md5('240610708') == md5('QNKCDZO')
evaluates to true
despite being completely different strings.
What's happening? Both MD5 hashes begin with '0e' followed by digits, which PHP helpfully interprets as scientific notation (0×10^something). And since 0 raised to any power equals 0, PHP thinks both hashes equal zero. It's basically comparing 0==0.
This is why strict comparison (===
) exists in PHP. Without it, you might accidentally authenticate someone with the wrong password! Security nightmare fuel for any developer who values their sanity.