WP Query not showing all results all the time - php

Question

I have a wp website with lunch and dinner offers for the next day. The offers are entered as posts, are in there own category (id=4) and have two custom field value:
- menu_date - the date when the post should be visible
- menu_number - if it's lunch it's 1, if it's dinner is 2
I use this query to get the posts i need:
$args = array(
'post_type' => 'post',
'cat' => 4,
'meta_key'=>'menu_number', 'orderby' => 'meta_value_num', 'order' => ASC );
$query = new WP_Query($args);
if ( $query->have_posts() ) {
while($query->have_posts()) {
$query->the_post();
$menu_date = get_post_custom_values( 'menu_date' );
$menu_number = get_post_custom_values( 'menu_number' );
$tommorow = date("dmY", time()+86400);
if ( $tommorow == $menu_date[0] && has_post_thumbnail() ) {
the_post_thumbnail('full', array( 'class' => 'img-responsive' ) );
if ($menu_number[0] == 1) {
Get Lunch!
}
else{
Get Dinner!
}
the_title();
}
}
} wp_reset_query();
Every day both lunch and dinner offers should be visible, but sometimes only lunch is shown, but after a few refreshes both are visible again.
Any way to improve the code so that this doesn't happen anymore? Thanks

Answer 1

Every day both lunch and dinner offers should be visible, but sometimes only lunch is shown, but after a few refreshes both are visible again.
It may be related to how you compute for tomorrow's date:
$tommorow = date("dmY", time()+86400);
Try changing it to as follows and see if that would work:
$tomorrow = date("dmY", strtotime("tomorrow"));

Answer 2

Try to check both at once in a loop. Like this :
`if ($menu_number[0] == 1) {
Get Lunch!
}
if ($menu_number[0] == 2){
Get Dinner!
}`
If this doesn't solve the problem, try debugging the values of $menu_number and $menu_date. See what is coming.
EDIT:
The meta query args should be like this: $tommorrow was incorrect in your args
'meta_query' => array(
array(
'key' => 'menu_date',
'value' => $tommorow
)
)
For Date Query:
$tomorrow = date("dmY", time()+86400);
$args = array(
'date_query' => array(
array(
'year' => $tomorrow["year"],
'month' => $tomorrow["mon"],
'day' => $tomorrow["mday"],
),
),
);
This will give you tomorrow's posts.

Answer 3

I figured it out:
I changed the $args like this. I added the menu_date here and I'm only retrieving the posts that have correct value.
$args = array(
'post_type' => 'post',
'cat' => 4,
'meta_query' => array(
array(
'key' => 'menu_date',
'value' => "$tommorow"
)),
'meta_key'=>'ordine_meniu', 'orderby' => 'meta_value_num', 'order' => ASC );
$query = new WP_Query($args);