wp get image attachment_id code example

Example 1: image upload and get attachment id in wordpress

/* this function for upload image in wordpress and return attchement id code by joshi yogesh ([email protected])*/
function cst_image_upload($img){

    require_once( ABSPATH . 'wp-admin/includes/image.php' );
    $attes_id = array();
    $cnt = count($img['name']);
    for($i=0;$i<$cnt;$i++)
    {
            $name = $img['name'][$i];
            $type = $img['type'][$i];
            $tmp_name = $img['tmp_name'][$i];
            $error = $img['error'][$i];
            $size = $img['size'][$i] ;
        
        $upload_data = array(
            'name'      => $name,
            'type'      => $type,
            'tmp_name'  => $tmp_name,
            'error'     => $error,
            'size'      => $size
            );
        $uploaded_file = wp_handle_upload($upload_data, array('test_form' => false));
        // print_r($uploaded_file);

        if (isset($uploaded_file['file'])) {
            $file_loc   =   $uploaded_file['file'];
            $file_name  =   basename($upload_data['name']);
            $file_type  =   wp_check_filetype($file_name);

            $attachment = array(
                'post_mime_type'    => $file_type['type'],
                'post_title'        => preg_replace('/\.[^.]+$/', '', basename($file_name)),
                'post_content'      => '',
                'post_status'       => 'inherit'
            );

            $attach_id      =   wp_insert_attachment($attachment, $file_loc);
            $attach_data    =   wp_generate_attachment_metadata($attach_id, $file_loc);
            wp_update_attachment_metadata($attach_id, $attach_data);
            array_push($attes_id,$attach_id);
        }
    }
    return $attes_id;
}

Example 2: wp_get_attachment_image_url

// Register Custom Post Type
function custom_post_type() {

	$labels = array(
		'name'                  => _x( 'Post Types', 'Post Type General Name', 'text_domain' ),
		'singular_name'         => _x( 'Post Type', 'Post Type Singular Name', 'text_domain' ),
		'menu_name'             => __( 'Post Types', 'text_domain' ),
		'name_admin_bar'        => __( 'Post Type', 'text_domain' ),
		'archives'              => __( 'Item Archives', 'text_domain' ),
		'attributes'            => __( 'Item Attributes', 'text_domain' ),
		'parent_item_colon'     => __( 'Parent Item:', 'text_domain' ),
		'all_items'             => __( 'All Items', 'text_domain' ),
		'add_new_item'          => __( 'Add New Item', 'text_domain' ),
		'add_new'               => __( 'Add New', 'text_domain' ),
		'new_item'              => __( 'New Item', 'text_domain' ),
		'edit_item'             => __( 'Edit Item', 'text_domain' ),
		'update_item'           => __( 'Update Item', 'text_domain' ),
		'view_item'             => __( 'View Item', 'text_domain' ),
		'view_items'            => __( 'View Items', 'text_domain' ),
		'search_items'          => __( 'Search Item', 'text_domain' ),
		'not_found'             => __( 'Not found', 'text_domain' ),
		'not_found_in_trash'    => __( 'Not found in Trash', 'text_domain' ),
		'featured_image'        => __( 'Featured Image', 'text_domain' ),
		'set_featured_image'    => __( 'Set featured image', 'text_domain' ),
		'remove_featured_image' => __( 'Remove featured image', 'text_domain' ),
		'use_featured_image'    => __( 'Use as featured image', 'text_domain' ),
		'insert_into_item'      => __( 'Insert into item', 'text_domain' ),
		'uploaded_to_this_item' => __( 'Uploaded to this item', 'text_domain' ),
		'items_list'            => __( 'Items list', 'text_domain' ),
		'items_list_navigation' => __( 'Items list navigation', 'text_domain' ),
		'filter_items_list'     => __( 'Filter items list', 'text_domain' ),
	);
	$args = array(
		'label'                 => __( 'Post Type', 'text_domain' ),
		'description'           => __( 'Post Type Description', 'text_domain' ),
		'labels'                => $labels,
		'supports'              => false,
		'taxonomies'            => array( 'category', 'post_tag' ),
		'hierarchical'          => false,
		'public'                => true,
		'show_ui'               => true,
		'show_in_menu'          => true,
		'menu_position'         => 5,
		'show_in_admin_bar'     => true,
		'show_in_nav_menus'     => true,
		'can_export'            => true,
		'has_archive'           => true,
		'exclude_from_search'   => false,
		'publicly_queryable'    => true,
		'capability_type'       => 'page',
	);
	register_post_type( 'post_type', $args );

}
add_action( 'init', 'custom_post_type', 0 );