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Here is a code snippet where I tried to retrieve a custom meta data from a custom post type.

$p_client_link = get_post_meta( $post->ID, 'client_link', true );
<a href="<?php echo esc_url( $p_client_link); ?>"><?php the_post_thumbnail( 'client_logo' ); ?></a>

My queries are:

  1. Q. esc_url( $p_client_link); == right/wrong? esc_url() or esc_attr()?
  2. Q. custom meta id client_link. Is it necessary to add prefix with this custom meta id like ‘p_client_link’?
  3. Q. Is it right to use esc_url() for any ‘href’ attribute value?

N. B. I have been developing a one page WordPress theme for themeforest submission.

Thanks in advance. :)

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  1. esc_url() - The correct option. He will prepare a string for use in attributes. Doc: https://developer.wordpress.org/reference/functions/esc_url/

  2. Adding a prefix is correct. You will secure your variables from overriding with other plug-ins.

  3. yes

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  • Thanks much @TrubinE :) . As for 2 no., actually I would like to know about the meta id which we use in the admin panel, not the variable I took. ( $post->ID, 'client_link', true). This is the id 'client_link'. Thanks again :)
    – Mohammad Shohel Rana
    Commented Mar 20, 2017 at 15:40
  • I meant that id should be unique, the prefix to us in this helps
    – TrubinE
    Commented Mar 20, 2017 at 16:39

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