What could be Wrong with this if is_page Loop? - php

Question

I'm working on a website. I'm using page.php to control all the pages even though they have different categories. All was ok on my local server (XAMPP), I could view all the pages, but when I uploaded online, the loops returned blank.
I decided to echo an "Hello" if page is true which worked fine. The main loop returns blank. Here is my code sample
<?php
//this parts works
if ( is_page( 10 ) ) {
echo "hello";
}
//This returns blank even when the category id and
if ( is_page( 10 ) ) {
$args = array(
'post_type' =>'page',
'posts_per_page' => 1,
'cat' => 5
);
$new_query = new WP_Query( $args );
while ( $new_query->have_posts() ) : $new_query->the_post();
echo '<div class="col-lg-4 col-sm-6">
<div class="post_box3">
<div class="post_cont boxeq">
<a href="' the_permalink(); '">
<h3>' the_title(); '</h3></a>
</div>
</div>
</div>';
endwhile;
wp_reset_postdata();
}
?>

Answer 1

Either echo something or terminate PHP for a moment
while ( $new_query->have_posts() ) : $new_query->the_post();
echo '<div class="col-lg-4 col-sm-6">
<div class="post_box3">
<div class="post_cont boxeq">
<a href="' . the_permalink() . '">
<h3>' . the_title() . '</h3></a>
</div>
</div>
</div>'
endwhile;
or
while ( $new_query->have_posts() ) : $new_query->the_post(); ?>
<div class="col-lg-4 col-sm-6">
<div class="post_box3">
<div class="post_cont boxeq">
<a href="<?php the_permalink(); ?> .">
<h3><?php the_title(); ?></h3></a>
</div>
</div>
</div>
<?php
endwhile;

Answer 2

If you haven't moved an exact copy of your website on the host there might be possibilities that the ID which in your case is 10 or the cat which in your cast is 5 is changed. Try using slugs instead.
<?php
if ( is_page( 'your-page-slug' ) ) {
echo "hello";
}
//This returns blank even when the category id and
if ( is_page( 'your-page-slug' ) ) {
$args = array(
'post_type' =>'page',
'posts_per_page' => 1,
'category_name' => 'your-category-slug'
);
$new_query = new WP_Query( $args );
while ( $new_query->have_posts() ) : $new_query->the_post();
'<div class="col-lg-4 col-sm-6">
<div class="post_box3">
<div class="post_cont boxeq">
<a href="' the_permalink(); '">
<h3>' the_title(); '</h3></a>
</div>
</div>
</div>'
endwhile;
wp_reset_postdata();
}
?>