A usage demonstration of the call_user_func_array of function in PHP

call_user_func_array
(PHP 4 > = 4.0.4, PHP 5)

call_user_func_array -- Call a user function given with an array of parameters
Description
mixed call_user_func_array ( callback function, array param_arr )

Call a user defined function given by function, with the parameters in param_arr. For example:

Example 1. call_user_func_array() example

 
<?php 
function debug($var, $val) 
{ 
echo "***DEBUGGING\nVARIABLE: $var\nVALUE:"; 
if (is_array($val) || is_object($val) || is_resource($val)) { 
print_r($val); 
} else { 
echo "\n$val\n"; 
} 
echo "***\n"; 
} 

$c = mysql_connect(); 
$host = $_SERVER["SERVER_NAME"]; 

call_user_func_array('debug', array("host", $host)); 
call_user_func_array('debug', array("c", $c)); 
call_user_func_array('debug', array("_POST", $_POST)); 
?> 

 
<?php 
function test($str) { 
echo $str; 
} 

call_user_func_array("test","NO.1 www.chhua.com");// The output "NO.1 www.chhua.com" 
// Parameter description" 1 The first parameter is the name of the function 2 Is the parameter  
class testClass { 
public function write($str){ 
echo $str; 
} 
} 
call_user_func_array(array(testClass,write),"NO.1 www.chhua.com");// When called with a class, use array() . array( Class name, method name ) 
?>