Returns only allowed post data fields.

Parameters

$post_dataarray|WP_Error|nulloptional

The array of post data to process, or an error object.
Defaults to the $_POST superglobal.

Default:null

Return

Source

function _wp_get_allowed_postdata( $post_data = null ) {
	if ( empty( $post_data ) ) {
		$post_data = $_POST;
	}

	// Pass through errors.
	if ( is_wp_error( $post_data ) ) {
		return $post_data;
	}

	return array_diff_key( $post_data, array_flip( array( 'meta_input', 'file', 'guid' ) ) );
}

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