What is the significance of URL encoding when passing values in PHP?

URL encoding is significant when passing values in PHP because it ensures that special characters in the data are properly formatted for transmission over the internet. This helps prevent errors and ensures that the data is correctly interpreted by the receiving server. To encode values in PHP, you can use the `urlencode()` function to encode the data before passing it in the URL.

// Encode a value before passing it in a URL
$value = "Hello, World!";
$encoded_value = urlencode($value);

// Pass the encoded value in the URL
$url = "https://example.com/?data=" . $encoded_value;