What considerations should be taken into account when creating shell scripts that interact with PHP scripts via SSH2 connections to ensure proper data transmission?

When creating shell scripts that interact with PHP scripts via SSH2 connections, it is important to consider data encoding and decoding to ensure proper transmission. This includes handling special characters, encoding data before sending it, and decoding data received from the PHP script.

// Encoding data before sending it over SSH2 connection
$dataToSend = json_encode($dataToSend);

// Sending encoded data to PHP script via SSH2 connection
ssh2_exec($connection, "php script.php '$dataToSend'");

// Decoding data received from PHP script
$dataReceived = json_decode($dataReceived, true);