How can the "echo <<< eof" command be utilized in PHP scripts to improve code readability or efficiency?

The "echo <<< eof" command can be utilized in PHP scripts to improve code readability by allowing for multi-line strings without the need for escaping characters. This can make the code easier to read and maintain, especially when dealing with large blocks of text or HTML. Additionally, it can improve efficiency by reducing the overhead of concatenating strings.

// Example of using "echo <<< eof" for improved code readability and efficiency
$variable = "Hello";
$multiLineString = <<< eof
This is a multi-line string using the "echo <<< eof" syntax.
It allows for easy formatting without the need for escaping characters.
You can also include variables like $variable within the string.
eof;

echo $multiLineString;