php man page for bin2hex

BIN2HEX(3)								 1								BIN2HEX(3)

bin2hex - Convert binary data into hexadecimal representation

SYNOPSIS
       string bin2hex (string  $str)

DESCRIPTION
	Returns an ASCII string containing the hexadecimal representation of $str. The conversion is done byte-wise with the high-nibble first.

PARAMETERS
	      o $str
		- A string.

RETURN VALUES
	Returns the hexadecimal representation of the given string.

SEE ALSO
       hex2bin(3), pack(3).

PHP Documentation Group 														BIN2HEX(3)