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<?php

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/**

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* AJAX Initialization & Helper Functions

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* @since 1.4

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* @package PUM

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* @subpackage PUM/includes

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* @author Daniel Iser <danieliser@wizardinternetsolutions.com>

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* @license http://opensource.org/licenses/gpl-3.0.php GNU Public License

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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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* Controls the basic analytics methods for Popup Maker

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class PUM_Ajax {

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/**

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* Creates and returns a 1x1 tracking gif to the browser.

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public static function serve_pixel() {

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$gif = self::get_file( POPMAKE_DIR . 'assets/images/beacon.gif' );

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header( 'Content-Type: image/gif' );

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header( 'Content-Length: ' . strlen( $gif ) );

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exit( $gif );

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}

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public static function get_file( $path ) {

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if ( function_exists( 'realpath' ) ) {

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$path = realpath( $path );

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}

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if ( ! $path || ! @is_file( $path ) ) {

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return '';

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}

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return @file_get_contents( $path );

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}

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/**

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* Returns a 204 no content header.

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public static function serve_no_content() {

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header( 'HTTP/1.0 204 No Content' );

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header( 'Content-Type: image/gif' );

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header( 'Content-Length: 0' );

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exit;

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}

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/**

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* Serves a proper json response.

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* @param mixed $data

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public static function serve_json( $data = 0 ) {

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header( 'Content-Type: application/json' );

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echo PUM_Utils_Array::safe_json_encode( $data );

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exit;

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}

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}

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