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                <?php  | 
            
                            
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                defined('XOOPS_ROOT_PATH') || exit('XOOPS root path not defined'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                require_once XOOPS_ROOT_PATH . '/class/tree.php';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                if (!class_exists('AboutTree')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Class AboutTree  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    class AboutTree extends XoopsObjectTree  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * AboutTree constructor.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param array $objectArr  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param null  $rootId  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                         */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        public function __construct(&$objectArr, $rootId = null)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            parent::__construct($objectArr, 'page_id', 'page_pid', $rootId);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param        $key  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param        $ret  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param        $prefix_orig  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param string $prefix_curr  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param null   $tags  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        public function makeTreeItems($key, &$ret, $prefix_orig, $prefix_curr = '', $tags = null)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ($key > 0) { | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                                if (count($tags) > 0) { | 
            
                            
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                                    foreach ($tags as $tag) { | 
            
                            
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                                        $ret[$key][$tag] = $this->_tree[$key]['obj']->getVar($tag);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $ret[$key]['page_title'] = $this->_tree[$key]['obj']->getVar('page_title'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $ret[$key]['prefix'] = $prefix_curr;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $prefix_curr .= $prefix_orig;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (isset($this->_tree[$key]['child']) && !empty($this->_tree[$key]['child'])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                foreach ($this->_tree[$key]['child'] as $childkey) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $this->makeTreeItems($childkey, $ret, $prefix_orig, $prefix_curr, $tags);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  string $prefix  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  int    $key  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  null   $tags  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        public function &makeTree($prefix = '-', $key = 0, $tags = null)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $ret = array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->makeTreeItems($key, $ret, $prefix, '', $tags);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $ret;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  string $name  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  string $fieldName  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  string $prefix  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  string $selected  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  bool   $addEmptyOption  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  int    $key  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  string $extra  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        public function makeSelBox($name, $fieldName, $prefix = '-', $selected = '', $addEmptyOption = false, $key = 0, $extra = '')  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $ret = '<select name=' . $name . '>';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (!empty($addEmptyOption)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $ret .= '<option value="0">' . (is_string($EmptyOption) ? $EmptyOption : '') . '</option>';  | 
            
                            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->_makeSelBoxOptions('page_title', $selected, $key, $ret, $prefix); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $ret .= '</select>';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $ret;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param       $key  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param       $ret  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param array $tags  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param int   $depth  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        public function getAllChildArray($key, &$ret, $tags = array(), $depth = 0)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (--$depth == 0) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (isset($this->_tree[$key]['child'])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                foreach ($this->_tree[$key]['child'] as $childkey) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    if (isset($this->_tree[$childkey]['obj'])):  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                                        if (count($tags) > 0) { | 
            
                            
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                                            foreach ($tags as $tag) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                                $ret['child'][$childkey][$tag] = $this->_tree[$childkey]['obj']->getVar($tag);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                            $ret['child'][$childkey]['page_title'] = $this->_tree[$childkey]['obj']->getVar('page_title'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    endif;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $this->getAllChildArray($childkey, $ret['child'][$childkey], $tags, $depth);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  int   $key  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  null  $tags  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @param  int   $depth  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                         */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        public function &makeArrayTree($key = 0, $tags = null, $depth = 0)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $ret = array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ($depth > 0) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $depth++;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->getAllChildArray($key, $ret, $tags, $depth);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    129
                 | 
                                    
                                                     | 
                
                 | 
                            return $ret;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    130
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    131
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    132
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    133
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.