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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 |
|---|---|
| 33 | <?php } ?> |
| 34 | </div> |
| 35 | |
| 36 | <div id="preview-action"> |
| 37 | <?php |
| 38 | if ( 'publish' == $post->post_status ) { |
| 39 | $preview_link = esc_url(get_permalink($post->ID)); |
| 40 | $preview_button = __('Preview Changes'); |
| 41 | } else { |
| 42 | $preview_link = esc_url(apply_filters('preview_post_link', add_query_arg('preview', 'true', get_permalink($post->ID)))); |
| 43 | $preview_button = __('Preview'); |
| 44 | } |
| 45 | ?> |
| 46 | <a class="preview button" href="<?php echo $preview_link; ?>" target="wp-preview" id="post-preview" tabindex="4"><?php echo $preview_button; ?></a> |
| 47 | <input type="hidden" name="wp-preview" id="wp-preview" value="" /> |
| 48 | </div> |
| 49 | |
| 50 | <div class="clear"></div> |
| 51 | </div><?php // /minor-publishing-actions ?> |