How does PHP handle the evaluation of functions within strings?

When trying to evaluate functions within strings in PHP, it is important to use double quotes instead of single quotes to allow for the evaluation of the function. This is because PHP does not evaluate functions within single quotes. By using double quotes, PHP will interpret the function call and execute it accordingly. 

// Example of evaluating functions within strings using double quotes
$name = "John";
echo "Hello, $name"; // Output: Hello, John

Keywords

PHP functions evaluation strings interpolation

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