The bin2hex() function converts a string of ASCII characters to hexadecimal values. The string can be converted back using the pack() function.
string bin2hex ( string $str )
Returns an ASCII string containing the hexadecimal representation of str. The conversion is done byte-wise with the high-nibble first.
| Parameter | Description |
|---|---|
| str | A string. |
Returns the hexadecimal representation of the given string.