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wp_is_post_revision() WP 1.0

Determines if the specified post is a revision.

1 time — 0.000741 sec (slow) | 50000 times — 1.31 sec (fast)

No Hooks.

Return

Int|false. ID of revision's parent on success, false if not a revision.

Usage

wp_is_post_revision( $post );
$post(int|WP_Post) (required)
Post ID or post object.

Changelog

Since 2.6.0 Introduced.

Code of wp_is_post_revision() WP 5.8.1

function wp_is_post_revision( $post ) {
	$post = wp_get_post_revision( $post );
	if ( ! $post ) {
		return false;
	}

	return (int) $post->post_parent;
}

post revisions

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