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                <?php  | 
            
                            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Give Reports Page/Tab  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package     Give  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @subpackage  Classes/Give_Donors_Report  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright   Copyright (c) 2016, WordImpress  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license     http://opensource.org/licenses/gpl-2.0.php GNU Public License  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @since       1.8  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                if ( ! defined( 'ABSPATH' ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	exit; // Exit if accessed directly  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                if ( ! class_exists( 'Give_Donors_Report' ) ) :  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * Give_Donors_Report.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @sine 1.8  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	class Give_Donors_Report { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * Setting page id.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @since 1.8  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @var   string  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		protected $id = '';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * Setting page label.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @since 1.8  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @var   string  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		protected $label = '';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * Constructor.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		public function __construct() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->id    = 'donors';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->label = esc_html__( 'Donors', 'give' );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			add_filter( 'give-reports_tabs_array', array( $this, 'add_settings_page' ), 20 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			add_action( "give-reports_settings_{$this->id}_page", array( $this, 'output' ) ); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			add_action( 'give_admin_field_report_donors', array( $this, 'render_report_donors_field' ), 10, 2 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * Add this page to settings.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @since  1.8  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @param  array $pages List of pages.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @return array  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		public function add_settings_page( $pages ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$pages[ $this->id ] = $this->label;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return $pages;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                		}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * Get settings array.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @since  1.8  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @return array  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		public function get_settings() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			// Hide save button.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$GLOBALS['give_hide_save_button'] = true;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			 * Filter the settings.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			 * @since  1.8  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			 * @param  array $settings  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$settings = apply_filters(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				'give_get_settings_' . $this->id,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                						'id'   => 'give_reports_donors',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                						'type' => 'title',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                						'table_html' => false  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                						'id'   => 'donors',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                						'name' => esc_html__( 'Donors', 'give' ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                						'type' => 'report_donors',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                						'id'   => 'give_reports_donors',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                						'type' => 'sectionend',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                						'table_html' => false  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			// Output.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return $settings;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                		}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * Output the settings.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @since  1.8  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @return void  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		public function output() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$settings = $this->get_settings();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			Give_Admin_Settings::output_fields( $settings, 'give_settings' );  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                		}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * Render report donors field  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @since  1.8  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @access public  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @param $field  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 * @param $option_value  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		public function render_report_donors_field( $field, $option_value ) { | 
            
                            
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                			do_action( 'give_reports_view_donors');  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                		}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                endif;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                return new Give_Donors_Report();  | 
            
            
                                                        
            
                                    
            
            
                | 
                    137
                 | 
                                    
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                 | 
            
            
                        
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.