WordPress at a glance
function is not described

wpdb::get_row() public WP 0.71

Retrieves one row from the database.

Executes a SQL query and returns the row from the SQL result.

It's a method of the class: wpdb{}

No Hooks.

Return

Array/Object/null/null. Database query result in format specified by $output or null on failure.

Usage

$wpdb = new wpdb();
$wpdb->get_row( $query, $output, $y );
$query(string/null)
SQL query.
Default: null
$output(string)
The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which correspond to an stdClass object, an associative array, or a numeric array, respectively.
Default: OBJECT
$y(int)
Row to return. Indexed from 0.
Default: 0

Changelog

Since 0.71 Introduced.

Code of wpdb::get_row() WP 5.5.1

<?php
public function get_row( $query = null, $output = OBJECT, $y = 0 ) {
	$this->func_call = "\$db->get_row(\"$query\",$output,$y)";

	if ( $this->check_current_query && $this->check_safe_collation( $query ) ) {
		$this->check_current_query = false;
	}

	if ( $query ) {
		$this->query( $query );
	} else {
		return null;
	}

	if ( ! isset( $this->last_result[ $y ] ) ) {
		return null;
	}

	if ( OBJECT === $output ) {
		return $this->last_result[ $y ] ? $this->last_result[ $y ] : null;
	} elseif ( ARRAY_A === $output ) {
		return $this->last_result[ $y ] ? get_object_vars( $this->last_result[ $y ] ) : null;
	} elseif ( ARRAY_N === $output ) {
		return $this->last_result[ $y ] ? array_values( get_object_vars( $this->last_result[ $y ] ) ) : null;
	} elseif ( OBJECT === strtoupper( $output ) ) {
		// Back compat for OBJECT being previously case-insensitive.
		return $this->last_result[ $y ] ? $this->last_result[ $y ] : null;
	} else {
		$this->print_error( ' $db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N' );
	}
}