How can variables be passed in PHP without storing data?

Variables can be passed in PHP without storing data by using the $_GET superglobal array. This array is used to collect form data after submitting an HTML form with the method="get". The data is passed in the URL as key/value pairs, allowing variables to be passed without storing them in a database or session. 

// Example of passing variables without storing data
// HTML form
<form action="process.php" method="get">
    <input type="text" name="name">
    <input type="submit" value="Submit">
</form>

// process.php
<?php
$name = $_GET['name'];
echo "Hello, $name!";
?>

Keywords

pass by reference pass by value variable scope global variables function parameters

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