Re: Introduce PHP_INT_MAX_SAFE constant similar to JS's Number.MAX_SAFE_INTEGER constant

Hi Am 2025-07-14 13:54, schrieb Gina P. Banyard:

The purpose of this integer is to indicate what is the maximal integer value that can be correctly represented by a float. On 32 bits this is equal to PHP_INT_MAX, but on 64 bits it is 9007199254740991 (which is 2^(53) – 1) as the mantissa of a floating point number is 52 bits.

I don't understand why this should be equal to PHP_INT_MAX for 32 Bit builds. The largest integer that can be safely represented by a float is 2^53-1 for both 32 and 64 Bit builds of PHP. More generally, I do not understand the value of the constant. PHP has proper integers, whereas JavaScript does not. Best regards Tim Düsterhu