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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 84 | <?php } ?> |
| 85 | </div> |
| 86 | |
| 87 | <div id="preview-action"> |
| 88 | <?php |
| 89 | if ( 'publish' == $post->post_status ) { |
| 90 | $preview_link = esc_url(get_permalink($post->ID)); |
| 91 | $preview_button = __('Preview Changes'); |
| 92 | } else { |
| 93 | $preview_link = esc_url(apply_filters('preview_post_link', add_query_arg('preview', 'true', get_permalink($post->ID)))); |
| 94 | $preview_button = __('Preview'); |
| 95 | } |
| 96 | ?> |
| 97 | <a class="preview button" href="<?php echo $preview_link; ?>" target="wp-preview" id="post-preview" tabindex="4"><?php echo $preview_button; ?></a> |
| 98 | <input type="hidden" name="wp-preview" id="wp-preview" value="" /> |
| 99 | </div> |
| 100 | |
| 101 | <div class="clear"></div> |
| 102 | </div><?php // /minor-publishing-actions ?> |