in 64bit php, everything between 0x7ffffffffffffE00 - PHP_INT_MAX is returned as float

[divinity76]

the following code should echo FOUND after 1 attempt(s) ,
and it works as expected in 32bit php, but in 64bit php it echos FOUND after 513 attempt(s)

for($i = PHP_INT_MAX; $i > 0; -- $i) {
    if (! is_float ( ShortURL::decode ( ShortURL::encode ( $i ) ) )) {
        //var_dump ( $i );
        die ( 'FOUND after '.((PHP_INT_MAX-$i)+1).' attempt(s)' );
    }
}
die ( 'NOT FOUND' );

[ocram]

Thanks for your effort here!

We should definitely do something to find out the limit, as I said in #7, but I think what you did is the wrong direction, isn't it? You found the largest number, other than PHP_INT_MAX in 64-bit PHP, that doesn't work. But what we need is actually the smallest such number, which requires much more computing power or time.