What is the method of using escape characters in PHP?

In PHP, you can use a backslash (\) to escape special characters. For example, if you want to include single quotes (‘) or double quotes (“) in a string, you can use a backslash to escape them, like this:

$str1 = 'This is a single quote: \'';
$str2 = "This is a double quote: \"";

Additionally, one can also use a backslash to escape other special characters, such as newline (\n) or tab (\t). Here is an example:

$str = "This is a string with a newline \n and a tab \t";
echo $str;

In the example above, backslashes are used to escape special characters and display them on the screen.