php- PHP uses an array to call a method in a class, and an error occurs

php

/**

• Enable session/session_start();/*
• Include initialization file/include_once '../../../sys/config/db-cred.inc.php';/*
• Define constants for configuration information /foreach ( $C as $name => $val ) {define($name, $val);}/*

• Generate an associative array with form action as key
  */
  $actions = array(
  'event_edit' => array(
  'object' => 'Calendar',
  'method' => 'processForm',
  'header' => 'Location:../../'
  ),

  'user_login' => array(
  'object' => 'Admin',
  'method' = > 'processLoginForm',
  'header' => 'Location:../../'
  )
  );
  /**

• Ensure that the anti-cross-site mark in the session is consistent with the submitted mark and the requested action is legal
  */
  if ( $_POST['token']==$ _SESSION['token'] &&
  isset($actions[$_POST['action']]) ) {
  $use_array = $actions[$_POST['action']];
  $obj = new $use_array'object' ;

  <code>if ( true == $msg=$obj->$use_array['method']() ) {    header($use_array['header']);    exit;} else {    die( $msg );}</code>

  } else {
  //If the token/action is illegal, redirect to the homepage
  header("Location:../../");
  exit;
  }

function __autoload($class) {

<code>$filename = "../../../sys/class/class.".$class.".inc.php";if ( file_exists($filename) ) {    include_once $filename;}</code>

}

The main problem is this: $obj->$use_array'method'
As soon as you get to this step, Function name must be a string in E:qampphtdocsSource Filespublicassetsincprocess.inc.php:40 Stack trace : #0 {main} thrown in E:qampphtdocsSource Filespublicassetsincprocess.inc.php on line 40 error.

If you use $obj to directly call the processForm() or processLoginForm() method in this class, you can.
Ask God for help.

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http://blog.sina.com.cn/s/blog_8d7518cb0100zk1t.html