How can the utf8_decode function be utilized to gain insights into data/text encoding in PHP applications?

When working with text data in PHP applications, it is important to ensure that the encoding is consistent to avoid issues with displaying or manipulating the data. The utf8_decode function can be utilized to convert UTF-8 encoded text to ISO-8859-1 encoding, which may help in identifying the original encoding of the data. By using utf8_decode, developers can gain insights into the encoding of the text data and make necessary adjustments to ensure proper handling.

$text = "This is a UTF-8 encoded text";
$decoded_text = utf8_decode($text);
echo $decoded_text;