PHP bin2hex Function Explained

The bin2hex() function in PHP is used to convert binary data into a hexadecimal representation. Its syntax is as follows:

string bin2hex ( string $binary_string )

The $binary_string parameter is the binary data string to be converted.

For example:

$binary_data = "hello";
$hex_data = bin2hex($binary_data);
echo $hex_data; // 输出：68656c6c6f

In the example above, “hello” is converted to the hexadecimal representation string 68656c6c6f.