wp-includes/post.php:899Returns relative path to an uploaded file.
$pathstringstringOne hook fires while _wp_relative_upload_path() runs, in this order:
Filters the relative path to an uploaded file.
function _wp_relative_upload_path( $path ) { $new_path = $path; $uploads = wp_get_upload_dir(); if ( str_starts_with( $new_path, $uploads['basedir'] ) ) { $new_path = str_replace( $uploads['basedir'], '', $new_path ); $new_path = ltrim( $new_path, '/' ); } /** * Filters the relative path to an uploaded file. * * @since 2.9.0 * * @param string $new_path Relative path to the file. * @param string $path Full path to the file. */ return apply_filters( '_wp_relative_upload_path', $new_path, $path );}Introduced in 2.9.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/post.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.