I am the Fire Phoenix of Special Forces Episode Episode Introduction to PHP Function Syntax 1

Copy code The code is as follows:

function getAdder($x)
{
return function ($y) use ($x) {
return $x + $y;
};
}
$adder = getAdder(8);
echo $adder(2); // prints "10"

Here, getAdder() function creates a closure using parameter $× (keyword "use" forces getting variable context) , which takes additional arguments $Y and returns to the call. This function can be stored as a parameter to another function, etc. See the Lambda Functions and Closure RFC for details.

The above has introduced the introduction to the PHP function syntax of I Am the Special Forces Fire Phoenix Episode One, including the introduction to the plot episodes of I Am the Fire Phoenix Special Forces. I hope it will be helpful to friends who are interested in PHP tutorials.