includes/MWFunction.php

   1 <?php
   2 /**
   3  * Helper methods to call functions and instance objects.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 class MWFunction {
  24
  25         /**
  26          * @param $callback
  27          * @return array
  28          * @throws MWException
  29          */
  30         protected static function cleanCallback( $callback ) {
  31                 if( is_string( $callback ) ) {
  32                         if ( strpos( $callback, '::' ) !== false ) {
  33                                 // PHP 5.1 cannot use call_user_func( 'Class::Method' )
  34                                 // It can only handle only call_user_func( array( 'Class', 'Method' ) )
  35                                 $callback = explode( '::', $callback, 2);
  36                         }
  37                 }
  38
  39                 if( count( $callback ) == 2 && $callback[0] == 'self' || $callback[0] == 'parent' ) {
  40                         throw new MWException( 'MWFunction cannot call self::method() or parent::method()' );
  41                 }
  42
  43                 // Run autoloader (workaround for call_user_func_array bug: http://bugs.php.net/bug.php?id=51329)
  44                 is_callable( $callback );
  45
  46                 return $callback;
  47         }
  48
  49         /**
  50          * @param $callback
  51          * @return mixed
  52          */
  53         public static function call( $callback ) {
  54                 $callback = self::cleanCallback( $callback );
  55
  56                 $args = func_get_args();
  57
  58                 return call_user_func_array( 'call_user_func', $args );
  59         }
  60
  61         /**
  62          * @param $callback
  63          * @param $argsarams
  64          * @return mixed
  65          */
  66         public static function callArray( $callback, $argsarams ) {
  67                 $callback = self::cleanCallback( $callback );
  68                 return call_user_func_array( $callback, $argsarams );
  69         }
  70
  71         /**
  72          * @param $class
  73          * @param $args array
  74          * @return object
  75          */
  76         public static function newObj( $class, $args = array() ) {
  77                 if( !count( $args ) ) {
  78                         return new $class;
  79                 }
  80
  81                 $ref = new ReflectionClass( $class );
  82                 return $ref->newInstanceArgs( $args );
  83         }
  84
  85 }