What are the benefits of using single quotes over double quotes when writing PHP scripts?

Using single quotes over double quotes in PHP scripts can improve performance slightly because PHP does not have to parse variables inside single quotes. Single quotes also make it easier to read and understand the code, especially when dealing with strings that contain a lot of double quotes. However, single quotes cannot parse escape sequences like \n or \t, so if you need to include special characters in your string, you may need to use double quotes. 

// Using single quotes for better performance and readability
$name = 'John';
echo 'Hello, ' . $name . '!'; // Output: Hello, John!

// Using double quotes to parse escape sequences
$message = "Hello, \nWorld!";
echo $message; // Output: Hello,
               //         World!

Keywords

single quotes double quotes PHP scripts string interpolation performance

Related Questions