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Edit File: republish-old-posts.php

<?php
/*
Plugin Name: Republish Old Posts
Version: 1.27
Plugin URI: http://infolific.com/technology/software-worth-using/republish-old-posts/
Description: Republish Old Posts automatically by setting the date to the current date. Puts your evergreen posts in front of your users via the front page and feeds. There is a <a href="http://infolific.com/technology/software-worth-using/republish-old-posts-for-wordpress/#pro-version" target="_new">pro version available</a> (a lifetime license is less than $15) with many additional options.
Author: Marios Alexandrou
Author URI: http://infolific.com/technology/
License: GPLv2 or later
Text Domain: republish-old-posts
*/

/*
Copyright 2015 Marios Alexandrou

Forked from the Old Post Promoter Plugin by Blog Traffic Exchange that was once housed in the WordPress Plugin Repository.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

//Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

define( 'ROP_1_MINUTE', 60 );
define( 'ROP_1_HOUR', 60 * ROP_1_MINUTE ); 
define( 'ROP_4_HOURS', 4 * ROP_1_HOUR ); 
define( 'ROP_6_HOURS', 6 * ROP_1_HOUR ); 
define( 'ROP_12_HOURS', 12 * ROP_1_HOUR ); 
define( 'ROP_24_HOURS', 24 * ROP_1_HOUR ); 
define( 'ROP_INTERVAL', ROP_12_HOURS ); 
define( 'ROP_INTERVAL_SLOP', ROP_4_HOURS ); 
define( 'ROP_AGE_LIMIT', 120); // 120 days
define( 'ROP_OMIT_CATS', "" );

register_activation_hook( __FILE__, 'rop_activate' );
register_deactivation_hook( __FILE__, 'rop_deactivate' );

add_action( 'init', 'rop' );
add_action( 'admin_menu', 'rop_options_setup' );
add_filter( 'the_content', 'rop_the_content' );
add_filter( 'plugin_row_meta', 'rop_plugin_meta', 10, 2 );

function rop_plugin_meta( $links, $file ) { // add some links to plugin meta row
	if ( strpos( $file, 'republish-old-posts.php' ) !== false ) {
		$links = array_merge( $links, array( '<a href="' . esc_url( get_admin_url(null, 'options-general.php?page=republish-old-posts') ) . '">Settings</a>' ) );
		$links = array_merge( $links, array( '<a href="http://infolific.com/technology/software-worth-using/republish-old-posts-for-wordpress/#pro-version" target="_blank">Pro Version (a lifetime license is less than $15)</a>' ) );
	}

return $links;
}

function rop_deactivate() {
	delete_option( 'rop_last_update' );
}

function rop_activate() {
	add_option( 'rop_interval', ROP_INTERVAL );
	add_option( 'rop_interval_slop', ROP_INTERVAL_SLOP );
	add_option( 'rop_age_limit', ROP_AGE_LIMIT );
	add_option( 'rop_omit_cats', ROP_OMIT_CATS );
	add_option( 'rop_show_original_pubdate', 1 );
	add_option( 'rop_pos', 0 );
	add_option( 'rop_at_top', 0 );
}

function rop() {
	if ( rop_update_time() ) {
		update_option( 'rop_last_update', time() );
		rop_republish_old_post();
	}
}

function rop_republish_old_post () {
	global $wpdb;
	$rop_omit_cats = get_option( 'rop_omit_cats' );
	$rop_age_limit = get_option( 'rop_age_limit' );

if ( !isset( $rop_omit_cats ) ) {
		$rop_omit_cats = ROP_OMIT_CATS;
	}
	if ( !isset( $rop_age_limit ) ) {
		$rop_age_limit = ROP_AGE_LIMIT;
	}
	
	$sql = "(SELECT ID, post_date
            FROM $wpdb->posts
            WHERE post_type = 'post'
                  AND post_status = 'publish'
                  AND post_date < '" . current_time( 'mysql' ) . "' - INTERVAL " . $rop_age_limit * 24 . " HOUR 
                  ";
    if ( $rop_omit_cats!='' ) {
    	$sql = $sql."AND NOT(ID IN (SELECT tr.object_id 
                                    FROM $wpdb->terms t 
                                          inner join $wpdb->term_taxonomy tax on t.term_id=tax.term_id and tax.taxonomy='category' 
                                          inner join $wpdb->term_relationships tr on tr.term_taxonomy_id=tax.term_taxonomy_id 
                                    WHERE t.term_id IN (".$rop_omit_cats.")))";
    }            
	$sql = $sql. ")";
	$sql = $sql.
            "ORDER BY post_date ASC 
            LIMIT 1 ";

//error_log ( $sql );
	
	$oldest_post = $wpdb->get_var( $sql, 0, 0 );
	if ( isset( $oldest_post ) ) {
		rop_update_old_post( $oldest_post );
	}
}

function rop_update_old_post( $oldest_post ) {
	global $wpdb;

$post = get_post( $oldest_post );
	$rop_original_pub_date = get_post_meta( $oldest_post, 'rop_original_pub_date', true );

if ( !( isset( $rop_original_pub_date ) && $rop_original_pub_date!='' ) ) {
	    $sql = "SELECT post_date from ".$wpdb->posts." WHERE ID = '$oldest_post'";
		$rop_original_pub_date = $wpdb->get_var( $sql );
		add_post_meta( $oldest_post, 'rop_original_pub_date', $rop_original_pub_date );
		$rop_original_pub_date = get_post_meta($oldest_post, 'rop_original_pub_date', true ); 
	}

$rop_pos = get_option('rop_pos');
	if ( !isset( $rop_pos ) ) {
		$rop_pos = 0;
	}

if ( $rop_pos == 1 ) {
		$new_time = date('Y-m-d H:i:s');
		$gmt_time = get_gmt_from_date($new_time);
	} else {
		$lastposts = get_posts( 'numberposts=1&offset=1' );
		foreach ($lastposts as $lastpost) {
			$post_date = strtotime( $lastpost->post_date );
			$new_time = date('Y-m-d H:i:s',mktime(date("H",$post_date),date("i",$post_date),date("s",$post_date)+1,date("m",$post_date),date("d",$post_date),date("Y",$post_date)));
			$gmt_time = get_gmt_from_date( $new_time );
		}
	}

$sql = "UPDATE $wpdb->posts SET post_date = '$new_time',post_date_gmt = '$gmt_time',post_modified = '$new_time',post_modified_gmt = '$gmt_time' WHERE ID = '$oldest_post'";		
	$wpdb->query($sql);
	if ( function_exists( 'wp_cache_flush' ) ) {
		wp_cache_flush();
	}
	
	//Cache clearing code for the WP Fastest Cache plugin
	if(isset($GLOBALS['wp_fastest_cache']) && method_exists($GLOBALS['wp_fastest_cache'], 'singleDeleteCache')){
		$GLOBALS['wp_fastest_cache']->singleDeleteCache(false, $oldest_post);
	}
			
	//do_action( 'old_post_promoted', $post );
}

function rop_update_time () {
	$last = get_option( 'rop_last_update' );
	$interval = get_option( 'rop_interval' );
	$time = time();

if ( !( isset( $interval ) && is_numeric( $interval ) ) ) {
		$interval = ROP_INTERVAL;
	}

$slop = get_option( 'rop_interval_slop' );
	if ( !( isset( $slop ) && is_numeric( $slop ) ) ) {
		$slop = ROP_INTERVAL_SLOP;
	}

//error_log( 'last: ' . $last );
	//error_log( 'time: ' . $time );
	//error_log( 'time minus last: ' . ( $time - $last ) );
	//error_log( 'interval: ' . $interval );
	//error_log( 'slop: ' . $slop );
	
	if ( false === $last ) {
		$ret = 1;
		//error_log( 'ret (forced): ' . $ret );
	} else if ( is_numeric( $last ) ) { 
		if ( $slop == 0 ) {
			if ( ( $time - $last ) >= $interval ) {
				$ret = 1;
			} else {
				$ret = 0;
			}
		} else {
			if ( ( $time - $last ) >= ( $interval + rand( 0, $slop ) ) ) {
				$ret = 1;
			} else {
				$ret = 0;
			}
		}
		//error_log( 'ret (calculated): ' . $ret );
	}

return $ret;
}

function rop_options_page() {	 	
	$message = null;
	$message_updated = __("Options Updated.", 'rop');

if ( !empty( $_POST['rop_action'] ) ) {
		check_admin_referer( 'rop_settings_form' );
		
		$message = $message_updated;

if ( isset( $_POST['rop_interval'] ) ) {
			$rop_interval = $_POST['rop_interval'];
			$rop_interval = intval( $rop_interval );
			update_option( 'rop_interval', $rop_interval );
		}

if ( isset( $_POST['rop_interval_slop'] ) ) {
			$rop_interval_slop = $_POST['rop_interval_slop'];
			$rop_interval_slop = intval( $rop_interval_slop );
			update_option( 'rop_interval_slop', $rop_interval_slop );
		}

if ( isset( $_POST['rop_age_limit'] ) ) {
			if ( is_numeric( $_POST['rop_age_limit'] ) ) {
			$rop_age_limit = $_POST['rop_age_limit'];
			} else {
				$rop_age_limit = ROP_AGE_LIMIT;
			}
			update_option( 'rop_age_limit', $rop_age_limit );
		}

if ( isset( $_POST['rop_show_original_pubdate'] ) ) {
			$rop_show_original_pubdate = $_POST['rop_show_original_pubdate'];
			$rop_show_original_pubdate = intval( $rop_show_original_pubdate );
			update_option( 'rop_show_original_pubdate', $rop_show_original_pubdate );
		}

if ( isset( $_POST['rop_pos'] ) ) {
			$rop_pos = $_POST['rop_pos'];
			$rop_pos = intval( $rop_pos );
			update_option( 'rop_pos', $rop_pos );
		}

if ( isset( $_POST['rop_at_top'] ) ) {
			$rop_at_top = $_POST['rop_at_top'];
			$rop_at_top = intval( $rop_at_top );
			update_option( 'rop_at_top', $rop_at_top );
		}

if ( isset( $_POST['post_category'] ) ) {
			$rop_omit_custom_field_value = implode( ',', $_POST['post_category'] );
			$rop_omit_custom_field_value = sanitize_text_field( $rop_omit_custom_field_value );
			update_option( 'rop_omit_cats', $rop_omit_custom_field_value );
		} else {
			update_option('rop_omit_cats', '');		
		}
		
		print('
			<div id="message" class="updated fade">
				<p>' . __( 'Options Updated.', 'republish-old-posts' ).'</p>
			</div>');
	}

$rop_omit_cats = sanitize_text_field( get_option( 'rop_omit_cats' ) );
	if ( !isset( $rop_omit_cats ) ) {
		$rop_omit_cats = ROP_OMIT_CATS;
	}
	
	$rop_age_limit = intval( get_option( 'rop_age_limit' ) );
	if ( !isset( $rop_age_limit ) || $rop_age_limit == 0 ) {
		$rop_age_limit = ROP_AGE_LIMIT;
	}

$rop_show_original_pubdate = intval( get_option( 'rop_show_original_pubdate' ) );
	if ( !isset( $rop_show_original_pubdate ) && !( $rop_show_original_pubdate == 0 || $rop_show_original_pubdate == 1 ) ) {
		$rop_show_original_pubdate = 1;
	}

$rop_at_top = intval( get_option( 'rop_at_top' ) );
	if ( !( isset( $rop_at_top ) ) ) {
		$rop_at_top = 0;
	}

$rop_pos = intval( get_option( 'rop_pos' ) );
	if ( !( isset( $rop_pos ) ) ) {
		$rop_pos = 1;
	}

$interval = intval( get_option( 'rop_interval' ) );
	if ( !( isset( $interval ) ) ) {
		$interval = ROP_INTERVAL;
	}

$slop = intval( get_option( 'rop_interval_slop' ) );
	if ( !( isset( $slop ) ) ) {
		$slop = ROP_INTERVAL_SLOP;
	}
		
	print('
	<div class="wrap" style="padding-bottom: 5em">
		<h2>Republish Old Posts</h2>
		<p>Posts on your site will be republished based on the conditions you specify below.</p>
		<p>A republished post will have its date reset to the current date and so it will appear in feeds, on your front page and at the top of archive pages.</p>
		<p><strong>WARNING:</strong> If your permalinks contain dates, disable this plugin immediately.</p>
		<p>More options are available in the <a href="http://infolific.com/technology/software-worth-using/republish-old-posts-for-wordpress/#pro-version" target="_blank">pro version</a> (a lifetime license is less than $15).</p>
		<div id="rop-items" class="postbox">
			<form id="rop" name="rop" action="' . $_SERVER['REQUEST_URI'] . '" method="post">
			    '. wp_nonce_field( 'rop_settings_form' ) .'
				<input type="hidden" name="rop_action" value="rop_update_settings" />
				<fieldset class="options">
					<div class="option">
						<label for="rop_interval">' . __( 'Minimum Interval Between Post Republishing: ', 'republish-old-posts' ) . '</label>
						<select name="rop_interval" id="rop_interval">
							<option disabled="disabled" value="">' . __( '15 Minutes (pro version)', 'republish-old-posts' ) . '</option>
							<option disabled="disabled" value="">' . __( '30 Minutes (pro version)', 'republish-old-posts' ) . '</option>
							<option disabled="disabled" value="">' . __( '1 Hour (pro version)', 'republish-old-posts' ) . '</option>
							<option value="' . ROP_4_HOURS . '" ' . rop_option_selected( ROP_4_HOURS, $interval ) . '>' . __( '4 Hours', 'republish-old-posts' ) . '</option>
							<option value="' . ROP_6_HOURS . '" ' . rop_option_selected( ROP_6_HOURS, $interval ) . '>' . __( '6 Hours', 'republish-old-posts' ) . '</option>
							<option value="' . ROP_12_HOURS . '" ' . rop_option_selected( ROP_12_HOURS, $interval ) . '>'. __( '12 Hours', 'republish-old-posts' ) . '</option>
							<option value="' . ROP_24_HOURS . '" ' . rop_option_selected( ROP_24_HOURS, $interval ) . '>' . __( '24 Hours (1 day)', 'republish-old-posts' ) . '</option>
							<option disabled="disabled" value="">' . __( '48 Hours (pro version)', 'republish-old-posts' ) . '</option>
							<option disabled="disabled" value="">' . __( '72 Hours (pro version)', 'republish-old-posts' ) . '</option>
							<option disabled="disabled" value="">' . __( '168 Hours (pro version)', 'republish-old-posts' ) . '</option>
						</select>
					</div>
					<div class="option">
						<label for="rop_interval_slop">' . __( 'Randomness Interval (added to minimum interval): ', 'republish-old-posts' ) . '</label>
						<select name="rop_interval_slop" id="rop_interval_slop">
							<option value="' . ROP_1_HOUR . '" ' . rop_option_selected( ROP_1_HOUR, $slop ) . '>' . __( 'Upto 1 Hour', 'republish-old-posts' ) . '</option>
							<option value="' . ROP_4_HOURS . '" ' . rop_option_selected( ROP_4_HOURS, $slop ) . '>' . __( 'Upto 4 Hours', 'republish-old-posts' ) . '</option>
							<option value="' . ROP_6_HOURS . '" ' . rop_option_selected( ROP_6_HOURS, $slop ) . '>' . __( 'Upto 6 Hours', 'republish-old-posts' ) . '</option>
							<option disabled="disabled" value="">' . __( 'Upto 12 Hours (pro version)', 'republish-old-posts' ) . '</option>
							<option disabled="disabled" value="">' . __( 'Upto 24 Hours (pro version)', 'republish-old-posts' ) . '</option>
						</select>
					</div>
					<div class="option">
						<label for="rop_age_limit">' . __( 'Post Age Before Eligible for Republishing: ', 'republish-old-posts' ).'</label>
						<select name="rop_age_limit" id="rop_age_limit">
							<option value="30" ' . rop_option_selected( 30, $rop_age_limit ) . '>' . __( '30 Days', 'republish-old-posts' ) . '</option>
							<option value="60" ' . rop_option_selected( 60, $rop_age_limit ) . '>' . __( '60 Days', 'republish-old-posts' ) . '</option>
							<option value="90" ' . rop_option_selected( 90, $rop_age_limit ) . '>' . __( '90 Days', 'republish-old-posts' ) . '</option>
							<option disabled="disabled" value="">' . __( '120 Days (pro version)', 'republish-old-posts' ) . '</option>
							<option disabled="disabled" value="">' . __( '240 Days (pro version)', 'republish-old-posts' ) . '</option>
							<option disabled="disabled" value="">' . __( '365 Days (pro version)', 'republish-old-posts' ) . '</option>
							<option disabled="disabled" value="">' . __( '730 Days (pro version)', 'republish-old-posts' ) . '</option>
						</select>
					</div>
					<div class="option">
						<label for="rop_pos">' . __( 'Republish post to position (choosing the 2nd position will leave the most recent post in place): ', 'republish-old-posts' ) . '</label>
						<select name="rop_pos" id="rop_pos">
							<option value="1" ' . rop_option_selected( 1, $rop_pos ) . '>' . __( '1st Position', 'republish-old-posts' ) . '</option>
							<option value="2" ' . rop_option_selected( 2, $rop_pos ) . '>' . __( '2nd Position', 'republish-old-posts' ) . '</option>
						</select>
					</div>
					<div class="option">
						<label for="rop_show_original_pubdate">' . __( 'Show Original Publication Date at Post End? ', 'republish-old-posts' ) . '</label>
						<select name="rop_show_original_pubdate" id="rop_show_original_pubdate">
							<option value="1" ' . rop_option_selected( 1, $rop_show_original_pubdate ) . '>' . __( 'Yes', 'republish-old-posts' ) . '</option>
							<option value="0" ' . rop_option_selected( 0, $rop_show_original_pubdate ) . '>' . __( 'No', 'republish-old-posts' ) . '</option>
						</select>
					</div>
					<div class="option">
						<label for="rop_at_top">' . __( 'Show Original Publication Date At Top of Post? ', 'republish-old-posts' ) . '</label>
						<select name="rop_at_top" id="rop_at_top">
							<option value="1" ' . rop_option_selected( 1, $rop_at_top ) . '>' . __( 'Yes', 'republish-old-posts' ) . '</option>
							<option value="0" ' . rop_option_selected( 0, $rop_at_top ) . '>' . __( 'No', 'republish-old-posts' ) . '</option>
						</select>
					</div>
					<div class="option">
						<label for="rop_omit_custom_field">' . __( 'Omit from republishing posts with the following custom field:', 'republish-old-posts' ) . '</label>
						<input disabled="disabled" type="text" name="rop_omit_custom_field" id="rop_omit_custom_field" value="pro version only" autocomplete="off" />
					</div>	
					<div class="option">
						<label for="rop_omit_custom_field_value">' . __( 'Custom field value that should match to omit republishing:', 'republish-old-posts' ) . '</label>
						<input disabled="disabled" type="text" name="rop_omit_custom_field_value" id="rop_omit_custom_field_value" value="pro version only" autocomplete="off" />
					</div>
					<div class="option">
						<label for="rop_force_custom_field">' . __( 'Force republishing posts with the following custom field:', 'republish-old-posts' ) . '</label>
						<input disabled="disabled" type="text" name="rop_force_custom_field" id="rop_force_custom_field" value="pro version only" autocomplete="off" />
					</div>	
					<div class="option">
						<label for="rop_force_custom_field_value">' . __( 'Custom field value that should match to force republishing:', 'republish-old-posts' ) . '</label>
						<input disabled="disabled" type="text" name="rop_force_custom_field_value" id="rop_force_custom_field_value" value="pro version only" autocomplete="off" />
					</div>	
					<div class="clearpad"></div>
					<div class="option">
						' . __( 'Select Categories to Omit from Republishing: ', 'republish-old-posts' ) . '
					</div>
					<ul>
					');
wp_category_checklist( 0, 0, array_map( 'intval', explode( ',', $rop_omit_cats ) ), false, null, false );
print('				</ul>
				</fieldset>
				<div id="divTxt"></div>
				<div class="clearpad"></div>
				<input type="submit" name="submit" value="' . __( 'Update Options', 'republish-old-posts' ) . '" />
				<div class="clearpad"></div>
			</form>
		</div>'
			);
?>
		<div id="rop-sb">
			<div class="postbox" id="rop-sbtwo">
				<h3 class="hndle"><span>Support</span></h3>
				<div class="inside">
					<p>Your best bet is to post on the <a href="https://wordpress.org/support/plugin/republish-old-posts">support page</a>.</p>
					<p>Please consider supporting me by <a href="https://wordpress.org/support/view/plugin-reviews/republish-old-posts">rating this plugin</a>. Thanks!</p>
				</div>
			</div>
			<div class="postbox" id="rop-sbthree">
				<h3 class="hndle"><span>Other Plugins</span></h3>
				<div class="inside">
					<ul>
						<li><a href="https://wordpress.org/plugins/real-time-find-and-replace/">Real-Time Find and Replace</a>: Set up find and replace rules that are executed AFTER a page is generated by WordPress, but BEFORE it is sent to a user's browser.</li>
						<li><a href="https://wordpress.org/extend/plugins/rss-includes-pages/">RSS Includes Pages</a>: Modifies RSS feeds so that they include pages and not just posts. My most popular plugin!</li>
						<li><a href="https://wordpress.org/extend/plugins/enhanced-plugin-admin">Enhanced Plugin Admin</a>: At-a-glance info (rating, review count, last update date) on your site's plugin page about the plugins you have installed (both active and inactive).</li>
						<li><a href="https://wordpress.org/extend/plugins/add-any-extension-to-pages/">Add Any Extention to Pages</a>: Add any extension of your choosing (e.g. .html, .htm, .jsp, .aspx, .cfm) to WordPress pages.</li>
					</ul>
				</div>
			</div>
		</div>
	</div>
<?php
}

function rop_option_selected( $option_value, $value ) {
	if($option_value == $value) {
		return 'selected="selected"';
	}
	return '';
}

function rop_options_setup() {	
	$page = add_submenu_page( 'options-general.php', 'Republish Old Posts', 'Republish Old Posts', 'activate_plugins', 'republish-old-posts', 'rop_options_page' );
	add_action( "admin_print_scripts-$page", "rop_admin_scripts" );
	
}

/*
* Scripts needed for the admin side
*/
function rop_admin_scripts() {
	wp_enqueue_style( 'rop_styles', plugins_url( 'css/rop.css', __FILE__ ) );
}