Question

How to use anonymous function (closures) in PHP

Answer 1

$f = function($var)
{
    printf("aaa %s<br />", $var);
};

$f('bbb');
$f('ccc');
    
/*
run:
 
aaa bbb
aaa ccc
      
*/

 

70+ SQL courses for beginners and professionals

Answer 2

$s = 'PHP anonymous functions';

$f = function() use($s) {
    echo $s;
};
$f();
    
/*
run:
 
PHP anonymous functions 
      
*/

 

70+ SQL courses for beginners and professionals

Answer 3

$s = 'PHP anonymous functions';

$example = function ($var) use ($s) {
    echo $var . ' ' . $s;
};
$example("hello");
    
/*
run:
 
hello PHP anonymous functions 
      
*/

 

70+ SQL courses for beginners and professionals