How do I convert a binary number (i.e. 1111111) to hexadecimal (i.e. 7f) using PHP? I recognize I could do dechex(bindec('1111111'));, however, I am certain that this is not the right way.
I tried bin2hex('1111111') but it resulted in 31313131313131.
Your solution is fine. You can also use base_convert.
$binary = '1111111';
echo base_convert($binary, 2, 16); // 7f
But keep in mind that php is not built for calculations. It is built for working with strings.
dechex(bindec($binary));
It is the right way, you are putting extra ")"(Closing Parenthesis) in the end...
bin2hex()? From the name, one would think it would work, however, not the case.You can also try this function:
<?php
function hexentities($str) {
$return = '';
for($i = 0; $i < strlen($str); $i++) {
$return .= '&#x'.bin2hex(substr($str, $i, 1)).';';
}
return $return;
}
?>
try this:
<?php
$binary = "11111001";
$hex = dechex(bindec($binary));
echo $hex;
?>
look at this link for more info http://php.net/manual/en/function.bin2hex.php
