call_user_func_array
Call a callback with an array of parameters
Syntax
call_user_func_array ( callable $callback , array $param_arr ) : mixed
Parameters
callback
The callable to be called.
param_arr
The parameters to be passed to the callback, as an indexed array.
Return
Returns the return value of the callback, or FALSE on error.
Examples
1
<?
function myfunction($arg1, $arg2) {
return __FUNCTION__ . " $arg1 $arg2";
}
$callback = "myfunction";
$param_arr = array("Hello", "World!");
$return = call_user_func_array($callback, $param_arr);
echo $return;
?>
myfunction Hello World!
2
<?
$function = function($arg1, $arg2) {
return __FUNCTION__ . " $arg1 $arg2";
};
$callback = $function;
$param_arr = array("Hello", "World!");
$return = call_user_func_array($callback, $param_arr);
echo $return;
?>
{closure} Hello World!
3
<?
class myclass {
static function myfunction($arg1, $arg2) {
return __METHOD__ . " $arg1 $arg2";
}
}
$callback = "myclass::myfunction";
$param_arr = array("Hello", "World!");
$return = call_user_func_array($callback, $param_arr);
echo $return;
?>
myclass::myfunction Hello World!
4
<?
class myclass {
static function myfunction($arg1, $arg2) {
return __METHOD__ . " $arg1 $arg2";
}
}
$callback = array("myclass", "myfunction");
$param_arr = array("Hello", "World!");
$return = call_user_func_array($callback, $param_arr);
echo $return;
?>
myclass::myfunction Hello World!
5
<?
class myclass {
static function myfunction($arg1, $arg2) {
return __METHOD__ . " $arg1 $arg2";
}
}
$callback = array(new myclass(), "myfunction");
$param_arr = array("Hello", "World!");
$return = call_user_func_array($callback, $param_arr);
echo $return;
?>
myclass::myfunction Hello World!
6
<?
namespace mynamespace;
class myclass {
static function myfunction($arg1, $arg2) {
return __NAMESPACE__ . " $arg1 $arg2";
}
}
$callback = __NAMESPACE__ . "\myclass::myfunction";
$param_arr = array("Hello", "World!");
$return = call_user_func_array($callback, $param_arr);
echo $return;
?>
mynamespace Hello World!
7
<?
namespace mynamespace;
class myclass {
static function myfunction($arg1, $arg2) {
return __NAMESPACE__ . " $arg1 $arg2";
}
}
$callback = array(__NAMESPACE__ . "\myclass", "myfunction");
$param_arr = array("Hello", "World!");
$return = call_user_func_array($callback, $param_arr);
echo $return;
?>
mynamespace Hello World!
8
<?
function myfunction(&$arg1, &$arg2) {
$arg1 = "Hello";
$arg2 = "World!";
echo __FUNCTION__ . " $arg1 $arg2";
}
$arg3 = "3";
$arg4 = "4";
$callback = "myfunction";
$param_arr = array(&$arg3, &$arg4);
call_user_func_array($callback, $param_arr);
echo "\nglobal $arg3 $arg4";
?>
myfunction Hello World! global Hello World!
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