Re: [PHP-DEV] [RFC] Saner string to number comparisons

[Arnold Daniels]

Hi Nikita,

One of the problems with numeric string comparisons is that it might
interpret a hexadecimal value as scientific notation

    $red = '990000';
    $purple = '9900e2';
    $red == $purple; // true

I suggest only interpreting a number formatted with a sign ("1e+100") or
with decimals ("1.0e100") as scientific notation as part of this RFC. These
are the notations that languages use when casting a float to a string,
never "1e100"

PHP "1.0E+100"
JavaScript "1e+100"
Python "1e+100"
Ruby "1.0e+100"
Java "1.0E100"

Arnold