convert a number from base 2 to base 16 in php

To convert a binary number to a hexadecimal number in PHP, we can use the base_convert() function. This function allows us to convert a number from one base to another.

Here's an example of how to convert a binary number to a hexadecimal number in PHP:

main.php
$binary_number = '1101010111010101';
$hex_number = base_convert($binary_number, 2, 16);

echo $hex_number; // prints "D5B5"
124 chars
5 lines

In the code above, we pass the binary number as the first argument to the base_convert() function. The second argument specifies the original base of the number (in this case, 2 for binary). The third argument specifies the target base of the conversion (in this case, 16 for hexadecimal).

The output of the above code is D5B5, which is the hexadecimal equivalent of the binary number 1101010111010101.