Where can one find reliable resources for understanding PHP string manipulation, including line breaks?

When working with PHP string manipulation, including line breaks, it's important to understand the functions and methods available for handling these operations. One reliable resource for learning about PHP string manipulation is the official PHP documentation, which provides detailed explanations and examples of various string functions. Additionally, online tutorials and forums dedicated to PHP programming can also be helpful in understanding how to manipulate strings, including adding or removing line breaks.

// Example of adding a line break to a string
$string = "Hello";
$string .= "\nWorld"; // Adding a line break using "\n"
echo $string;