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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 |
---|---|
611 | * Returning a truthy value from the filter will skip the current meta |
612 | * object from being exported. |
613 | * |
614 | * @since 3.3.0 |
615 | * |
616 | * @param bool $skip Whether to skip the current post meta. Default false. |
617 | * @param string $meta_key Current meta key. |
618 | * @param object $meta Current meta object. |
619 | */ |
620 | if ( apply_filters( 'wxr_export_skip_postmeta', false, $meta->meta_key, $meta ) ) { |
621 | continue; |
622 | } |
623 | ?> |
624 | <wp:postmeta> |
625 | <wp:meta_key><?php echo wxr_cdata( $meta->meta_key ); ?></wp:meta_key> |
626 | <wp:meta_value><?php echo wxr_cdata( $meta->meta_value ); ?></wp:meta_value> |
627 | </wp:postmeta> |
628 | <?php |
629 | endforeach; |