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                <?php  | 
            
                            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Logs UI  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package     Give  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @subpackage  Admin/Reports  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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       1.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Exit if accessed directly  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                if ( ! defined( 'ABSPATH' ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	exit;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Sales Log View  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @since 1.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @uses  Give_Sales_Log_Table::prepare_items()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @uses  Give_Sales_Log_Table::display()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @return void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                function give_logs_view_sales() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	include( dirname( __FILE__ ) . '/class-sales-logs-list-table.php' );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$logs_table = new Give_Sales_Log_Table();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$logs_table->prepare_items();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$logs_table->display();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                add_action( 'give_logs_view_sales', 'give_logs_view_sales' );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Gateway Error Logs  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @since 1.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @uses  Give_File_Downloads_Log_Table::prepare_items()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @uses  Give_File_Downloads_Log_Table::display()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @return void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                function give_logs_view_gateway_errors() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	include( dirname( __FILE__ ) . '/class-gateway-error-logs-list-table.php' );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$logs_table = new Give_Gateway_Error_Log_Table();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$logs_table->prepare_items();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$logs_table->display();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                add_action( 'give_logs_view_gateway_errors', 'give_logs_view_gateway_errors' );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * API Request Logs  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @since 1.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @uses  Give_API_Request_Log_Table::prepare_items()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @uses  Give_API_Request_Log_Table::search_box()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @uses  Give_API_Request_Log_Table::display()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @return void  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                function give_logs_view_api_requests() { | 
            
            
                                                                        
                            
            
                                    
            
            
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                	include( dirname( __FILE__ ) . '/class-api-requests-logs-list-table.php' );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	$logs_table = new Give_API_Request_Log_Table();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	$logs_table->prepare_items();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	?>  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	<div class="wrap">  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		<?php do_action( 'give_logs_api_requests_top' ); ?>  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		<form id="give-logs-filter" method="get" action="<?php echo admin_url( 'edit.php?post_type=give_forms&page=give-reports&tab=logs' ); ?>">  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			<?php  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			$logs_table->search_box( esc_html__( 'Search', 'give' ), 'give-api-requests' );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			$logs_table->display();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			?>  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			<input type="hidden" name="post_type" value="give_forms"/>  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			<input type="hidden" name="page" value="give-reports"/>  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			<input type="hidden" name="tab" value="logs"/>  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		</form>  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		<?php do_action( 'give_logs_api_requests_bottom' ); ?>  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	</div>  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	<?php  | 
            
            
                                                                        
                            
            
                                    
            
            
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                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                add_action( 'give_logs_view_api_requests', 'give_logs_view_api_requests' );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Default Log Views  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @since 1.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @return array $views Log Views  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                function give_log_default_views() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$views = array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		'sales'          => esc_html__( 'Donations', 'give' ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		'gateway_errors' => esc_html__( 'Payment Errors', 'give' ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		'api_requests'   => esc_html__( 'API Requests', 'give' )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$views = apply_filters( 'give_log_views', $views );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	return $views;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Renders the Reports page views drop down  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @since 1.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @return void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                function give_log_views() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$views        = give_log_default_views();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	$current_view = isset( $_GET['view'] ) && array_key_exists( $_GET['view'], give_log_default_views() ) ? sanitize_text_field( $_GET['view'] ) : 'sales';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	?>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	<form id="give-logs-filter" method="get" action="edit.php">  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		<select id="give-logs-view" name="view">  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			<optgroup label="Log Type:">  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				<?php foreach ( $views as $view_id => $label ): ?>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					<option value="<?php echo esc_attr( $view_id ); ?>" <?php selected( $view_id, $current_view ); ?>><?php echo $label; ?></option>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				<?php endforeach; ?>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			</optgroup>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		</select>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		<?php do_action( 'give_log_view_actions' ); ?>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		<input type="hidden" name="post_type" value="give_forms"/>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    132
                 | 
                                    
                                                     | 
                
                 | 
                		<input type="hidden" name="page" value="give-reports"/>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    133
                 | 
                                    
                                                     | 
                
                 | 
                		<input type="hidden" name="tab" value="logs"/>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    134
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    135
                 | 
                                    
                                                     | 
                
                 | 
                		<?php submit_button( esc_html__( 'Apply', 'give' ), 'secondary', 'submit', false ); ?>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                	</form>  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                	<?php  | 
            
            
                                                        
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                        
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.