custom-meta-box

## ---- 1. Backend ---- ##
// Adding a custom Meta container to admin products pages
add_action('add_meta_boxes', 'create_custom_meta_box');
if (!function_exists('create_custom_meta_box')) {
    function create_custom_meta_box()
    {
        add_meta_box(
            'custom_product_meta_box',
            __(' Product Main URL <em>(orginal)</em>', 'cmb'),
            'add_custom_product1_meta_box',
            'product',
            'side'
        );
    }
}
//  Custom metabox content in admin product pages
if (!function_exists('add_custom_product1_meta_box')) {
    function add_custom_product1_meta_box($post)
    {?>
      <label for="product1">Add your main product link:</label>
	  <a class="btn btn-success" href="<?php echo get_post_meta($post->ID,'mainpro1',true);?>" target="_blank">Open the original product link</a>
<input type="url" id="product1" name="mainpro1" class="widefat" value="<?php echo get_post_meta($post->ID,'mainpro1',true);?>">
      <label for="product2">Add your main product link:</label>
	  <a class="btn btn-success" href="<?php echo get_post_meta($post->ID,'mainpro2',true);?>" target="_blank">Open the original product link</a>
<input type="url" id="product2" name="mainpro2" class="widefat" value="<?php echo get_post_meta($post->ID,'mainpro2',true);?>">
      <label for="product3">Add your main product link:</label>
	  <a class="btn btn-success" href="<?php echo get_post_meta($post->ID,'mainpro3',true);?>" target="_blank">Open the original product link</a>
<input type="url" id="product3" name="mainpro3" class="widefat" value="<?php echo get_post_meta($post->ID,'mainpro3',true);?>">
<label for="product4">Add your main product link:</label>
	  <a class="btn btn-success" href="<?php echo get_post_meta($post->ID,'mainpro4',true);?>" target="_blank">Open the original product link</a>
<input type="url" id="product4" name="mainpro4" class="widefat" value="<?php echo get_post_meta($post->ID,'mainpro4',true);?>">
      <label for="product5">Add your main product link:</label>
	  <a class="btn btn-success" href="<?php echo get_post_meta($post->ID,'mainpro5',true);?>" target="_blank">Open the original product link</a>
<input type="url" id="product5" name="mainpro5" class="widefat" value="<?php echo get_post_meta($post->ID,'mainpro5',true);?>">
    <?php }
}

function save_custom_product1_meta_box($post_id){
update_post_meta($post_id,'mainpro1',$_POST['mainpro1']);
update_post_meta($post_id,'mainpro2',$_POST['mainpro2']);
update_post_meta($post_id,'mainpro3',$_POST['mainpro3']);
update_post_meta($post_id,'mainpro4',$_POST['mainpro4']);
update_post_meta($post_id,'mainpro5',$_POST['mainpro5']);
}
add_action('save_post','save_custom_product1_meta_box');