How to convert hex to int32?

Question

I'm trying to convert hex code from 010 Editor to int. 010 Editor

How can I get 4118 by converting string 16100000? I tried hexdec function, but It gives the wrong result.

echo hexdec('1610'); //gives 5648

echo hexdec('16100000'); //gives 370147328

And how to convert back 4118 to 16100000?

Answer 1

That hex to int32 convertion in the 010 Editor you've mentioned has little endian sequencing ( https://en.wikipedia.org/wiki/Endianness ).

So, you have to assemble your original hexadecimal string in inverse order.

echo hexdec('00001016');  // Would result in the 4118 you were expecting.

And to have it back you can use base_convert, from base 10 to base 16 and rearenge the string:

echo base_convert('00004118', 10, 16);

Which would give you '1016'