wp-data-access / WPDataAccess / Utilities / WPDA_Example.php

WPDA_Example.php in WP Data Access – App Builder for Tables, Forms, Charts, Maps & Dashboards 2.0.13, at WPDataAccess/Utilities/WPDA_Example.php

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1	<?php
2	/**
3	* Suppress "error - 0 - No summary was found for this file" on phpdoc generation
4	*
5	* @package WPDataAccess\Utilities
6	*/
7
8	namespace WPDataAccess\Utilities {
9
10	/**
11	* Class WPDA_Example
12	*
13	* Show downloadable example code.
14	*
15	* @package WPDataAccess\Utilities
16	* @author Peter Schulz
17	* @since 1.0.0
18	*/
19	class WPDA_Example {
20
21	/**
22	* Send example file
23	*
24	* @since 1.0.0
25	*/
26	public function get_example() {
27
28	if ( isset( $_REQUEST['filename'] ) ) {
29	$filename = sanitize_text_field( wp_unslash( $_REQUEST['filename'] ) ); // input var okay.
30	if ( 'wpda-test' === $filename ) {
31	$this->send_file( $filename );
32	} else {
33	wp_die( esc_html__( 'ERROR: Wrong arguments', 'wp-data-access' ) );
34	}
35	} else {
36	wp_die( esc_html__( 'ERROR: Wrong arguments', 'wp-data-access' ) );
37	}
38
39	}
40
41	/**
42	* Send content of example file
43	*
44	* @since 1.0.0
45	*
46	* @param string $example_name Name of example file without file extention.
47	*/
48	protected function send_file( $example_name ) {
49
50	$example_file_name = plugin_dir_path( dirname( __FILE__ ) ) . '../tutorials/' . $example_name . '.php.txt';
51	$example_file_handle = fopen( $example_file_name, 'r' );
52	if ( $example_file_handle ) {
53	// Read file content and close handle.
54	$example_file_content = fread( $example_file_handle, filesize( $example_file_name ) );
55	fclose( $example_file_handle );
56
57	// Send file content.
58	header( 'Content-type: text/plain; charset=utf-8' );
59	header( "Content-Disposition: attachment; filename=$example_name.php.txt" );
60	header( 'Pragma: no-cache' );
61	header( 'Expires: 0' );
62	echo $example_file_content;
63	}
64
65	}
66
67	}
68
69	}
70