What best practices should be followed when passing variables from one PHP file to another through HTML links?

When passing variables from one PHP file to another through HTML links, it is best practice to use query parameters in the URL. This can be achieved by appending the variable name and its value to the URL using the "?" symbol followed by the variable name and value pairs separated by "&" symbols. In the receiving PHP file, these variables can be accessed using the $_GET superglobal array. 

// Sending file (example.php)
$variable = "value";
echo "<a href='receiver.php?variable=$variable'>Click here</a>";

// Receiving file (receiver.php)
$received_variable = $_GET['variable'];
echo $received_variable;

Keywords

PHP variables HTML links GET method include statement

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