Are there any best practices or resources available for encoding and decoding strings between PHP and C effectively?

When encoding and decoding strings between PHP and C, it is important to use a standardized encoding method to ensure compatibility between the two languages. One common approach is to use base64 encoding for transferring binary data as strings. PHP provides functions like base64_encode() and base64_decode() for encoding and decoding data respectively.

// Encoding a string in PHP
$string = "Hello, world!";
$encoded_string = base64_encode($string);

// Decoding the encoded string in C
// Assuming the encoded_string is passed to C
$decoded_string = base64_decode($encoded_string);

echo $decoded_string; // Output: Hello, world!