What is the difference between using single and double quotes in PHP functions like str_replace() when dealing with line breaks?

When dealing with line breaks in PHP functions like str_replace(), using double quotes allows for special characters like \n to be interpreted as a new line character, while single quotes will treat \n as a literal string. To ensure that line breaks are properly handled, it is recommended to use double quotes when dealing with functions that require interpretation of special characters.

// Using double quotes to correctly handle line breaks
$text = "Hello\nWorld";
$result = str_replace("\n", "<br>", $text);
echo $result;