Usage of call_user_func_array callback function in PHP

This article mainly introduces the usage of the call_user_func_array callback function in PHP. The article gives detailed example code. I believe it is helpful for everyone's understanding and learning. Friends in need can refer to it. Below Let’s learn together.

call_user_func_array

call_user_func_array — Call the callback function and pass an array parameter as the parameter of the callback function

mixed call_user_func_array ( callable $callback , array $param_arr )

Call the first parameter as the callback function (callback), and pass in the parameter array (param_arr) as the parameter of the callback function.

Example:

function foobar($arg, $arg2) {
  echo __FUNCTION__, " got $arg and $arg2\n";
}
class foo {
  function bar($arg, $arg2) {
    echo __METHOD__, " got $arg and $arg2\n";
  }
}


// Call the foobar() function with 2 arguments
call_user_func_array("foobar", array("one", "two"));
dump("<br/>");
// Call the $foo->bar() method with 2 arguments
$foo = new foo;
call_user_func_array(array($foo, "bar"), array("three", "four"));

Output result:

foobar got one and two

foo::bar got three and four

The above is the entire content of this article, I hope it will be helpful to everyone's study.

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