Hi internals, PHP's == comparison semantics for strings have a peculiar edge-case, where comparisons of the form "0e123" == "0e456" return true, because they are interpreted as floating point zero numbers. This is problematic, because strings of that form are usually not numbers, but hex-encoded hashes or similar.
I'm wondering if it may make sense to special-case the comparison semantics to not consider strings of the form "0e[DIGITS]" equal, unless they are exactly equal (i.e., fall back to lexicographical if both sides of the comparison are zero exponentials). Here's a possible implementation: https://github.com/php/php-src/pull/6749 Of course, the usual rule that you should always use === still holds, but this at least eliminates the most dangerous edge case. Regards, Nikita
