What are the best practices for passing variables through links in PHP?

When passing variables through links in PHP, it is best practice to use the `$_GET` superglobal array to retrieve the variables from the URL. This ensures that the variables are securely passed and can be accessed easily in the receiving script. It is important to sanitize and validate the variables before using them to prevent security risks. 

// Sending script
$variable1 = "value1";
$variable2 = "value2";

echo "<a href='receiver.php?var1=" . urlencode($variable1) . "&var2=" . urlencode($variable2) . "'>Link</a>";
```

```php
// Receiving script (receiver.php)
$var1 = $_GET['var1'];
$var2 = $_GET['var2'];

// Sanitize and validate the variables before using them
$var1 = filter_var($var1, FILTER_SANITIZE_STRING);
$var2 = filter_var($var2, FILTER_SANITIZE_STRING);

// Use the variables
echo "Variable 1: " . $var1 . "<br>";
echo "Variable 2: " . $var2;

Keywords

GET method POST method URL parameters $_GET superglobal $_POST superglobal

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