Is there a more efficient way to include variables in a string in PHP other than concatenation?

When including variables in a string in PHP, using concatenation can be cumbersome and less efficient, especially when dealing with multiple variables. An alternative approach is to use double quotes and curly braces to directly insert variables into the string without the need for concatenation. This method is more concise and easier to read.

// Using double quotes and curly braces to include variables in a string
$name = "John";
$age = 30;
$string = "Hello, my name is {$name} and I am {$age} years old.";
echo $string;