PHP function Syntax Introduction a _php tutorial

Copy the Code code as follows:
function Getadder ($x)
{
return function ($y) use ($x) {
return $x + $y;
};
}
$adder = Getadder (8);
Echo $adder (2); Prints "10"

Here, the Getadder () function creates a closed use parameter $x (the keyword "uses" The force of the increasingly variable context), which requires an extra parameter of $ y and returns to the call. This feature can be stored as a parameter to another function such as details see lambda function and close the RFC.

http://www.bkjia.com/PHPjc/320214.html www.bkjia.com true http://www.bkjia.com/PHPjc/320214.html techarticle Copy the code as follows: function Getadder ($x) {return function ($y) use ($x) {return $x + $y;};} $adder = Getadder (8); Echo $ad Der (2); Prints "10" here, Getadder ( ...

