Useful Wordpress Snippets

wp-snippets.php

<?php 

// Get the_content by post id
echo apply_filters('the_content', get_post_field('post_content', $post_id));

// Featured Image display
$attr = array(
	'src'	=> $src,
	'class'	=> "attachment-$size",
	'alt'	=> trim(strip_tags( $wp_postmeta->_wp_attachment_image_alt )),
);
if ( has_post_thumbnail() ) {
	the_post_thumbnail( $size, $attr ); 
} 

// wp_get_attachment_image with class
echo wp_get_attachment_image( get_sub_field( 'slider_image' ), 'medium', false, array( 'class' => 'attachment-medium featured' ) ); 

// conditional call sidebar
<?php if ( is_active_sidebar( 'primary' ) ) : ?>

	<div id="sidebar-primary" class="sidebar">

		<?php dynamic_sidebar( 'primary' ); ?>

	</div>

<?php endif;