How can a variable be defined in a URL in PHP?

In PHP, variables can be defined in a URL by passing them as query parameters. This is done by appending a "?" to the URL followed by the variable name and value pairs separated by "&". These variables can then be accessed in PHP using the $_GET superglobal array. Example: 

// URL: http://example.com/page.php?name=John&age=25

$name = $_GET['name']; // Retrieves the value of the 'name' variable from the URL
$age = $_GET['age']; // Retrieves the value of the 'age' variable from the URL

echo "Name: $name, Age: $age";

Keywords

PHP variable URL define syntax

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