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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 |
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526 | * Returning a truthy value to the filter will skip the current meta |
527 | * object from being exported. |
528 | * |
529 | * @since 3.3.0 |
530 | * |
531 | * @param bool $skip Whether to skip the current post meta. Default false. |
532 | * @param string $meta_key Current meta key. |
533 | * @param object $meta Current meta object. |
534 | */ |
535 | if ( apply_filters( 'wxr_export_skip_postmeta', false, $meta->meta_key, $meta ) ) |
536 | continue; |
537 | ?> |
538 | <wp:postmeta> |
539 | <wp:meta_key><?php echo wxr_cdata( $meta->meta_key ); ?></wp:meta_key> |
540 | <wp:meta_value><?php echo wxr_cdata( $meta->meta_value ); ?></wp:meta_value> |
541 | </wp:postmeta> |
542 | <?php endforeach; |
543 |
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544 | $_comments = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_approved <> 'spam'", $post->ID ) ); |