Comparing post publish date to "one month ago" unix time - wordpress

Question

I'm stuck on a problem and thought maybe I'm missing something basic. I'm making a function in WordPress that lists posts with a publish date of less than one month from "now". I do this by subtracting 2419200 (30 days) from the current time, using time(). Then I get posts which are > 30 days ago. However, my function interprets this range incorrectly and only serves up posts which are within a range of 2 weeks!
There is a lot going on in this function in addition to this problem, so I apologize, but follow the variables $range, $limit, and $publish_date for this issue. Notice that for testing purposes I set my variable to "monthly" manually at the start.
function send_archive() {
$range = 'monthly';
$now = time();
switch ($range) {
case 'monthly' :
$limit = ($now - 2419200); // 30 days
break;
case 'weekly' :
$limit = ($now - 604800);
break;
case 'daily' :
$limit = ($now - 86400);
break;
}
$post_types = get_post_types();
$posts = get_posts(array('post_type' => $post_types));
$all_users = get_users();
foreach ($all_users as $user) {
$excluded = excluded_admin( $user->user_login );
echo 'excluded is: ' . $excluded . '<br />';
echo 'user_login is: ' . $user->user_login . '<br />';
if ( $excluded != 'excluded' ) {
$frequency = get_user_meta($user->ID, 'iw_notify_frequency', true);
echo 'frequency is: ' . $frequency . '<br />';
echo 'Range is: ' . $range . '<br />';
echo 'Limit is: ' . date('D, d M Y H:i:s',$limit) . '<br />';
$posts_in_range = '';
$counter = 0;
$to = '';
$subject = '';
$headers = '';
if ($frequency == $range) {
$posts_in_range = get_option('iw-notify-greeting');
$posts_in_range .= '<p>' . strtoupper($range) . ' digest of posts from the City of Mukilteo</p>';
foreach ($posts as $post) {
$published_date = strtotime( $post->post_date_gmt );
$posts_in_range .= 'published_date: ' . $published_date. '<br />';
$posts_in_range .= 'limit: ' . $limit . '<br />';
$posts_in_range .= 'title: ' . $post->post_title . '<br />';
if ($published_date > $limit ) {
$match = has_user_selected_terms($user->ID, $post->ID);
if ($match != '') {
$headers = 'Content-type: text/html;charset=utf-8' . "\r\n";
$posts_in_range .= $post->post_title;
$posts_in_range .= ' - published ' . date('M, d', $published_date) . '<br />';
$posts_in_range .= $post->post_excerpt . '<br />';
$posts_in_range .= get_permalink($post->ID);
$posts_in_range .= '<br /><br />';
$counter++;
}
}
}
}
$posts_in_range .= get_option('iw-notify-unsubscribe') . '<br />----<br />';
if ( $counter != 0 ) {
$to = $user->user_email;
$subject = ucfirst($range) . ' archive from the City of Mukilteo';
$headers = 'Content-type: text/html;charset=utf-8';
$headers .= 'From: ' . get_option('from-name') . '<' . get_option('from-email') . '>' . "\r\n";
$content = $posts_in_range;
wp_mail($to, $subject, $content, $headers);
echo "Email sent to " . $user->display_name . '<br />';
echo $to . '<br />';
echo $subject .'<br />';
echo $headers . '<br />';
echo $posts_in_range . '<br />';
//echo $user->display_name . '<br />';
//echo $posts_in_range;
}
}
}
}

Answer 1

Instead of going all over your posts you can run a query using a date range
$args = array(
'date_query' => array(
array(
'column' => 'post_date_gmt',
'after' => '1 month ago',
)
),
'posts_per_page' => -1,
);
$query = new WP_Query( $args );
//DO YOUR STUFF WITH THE RESULTS
This query should return the post created in the last month.
More info about Date Parameters