mysql_insert_id Get the ID generated in the last query &mysql.alternative.note; mysqli_insert_id PDO::lastInsertId &reftitle.description; intmysql_insert_id resourcelink_identifierNULL Retrieves the ID generated for an AUTO_INCREMENT column by the previous query (usually INSERT). &reftitle.parameters; &mysql.linkid.description; &reftitle.returnvalues; The ID generated for an AUTO_INCREMENT column by the previous query on success, 0 if the previous query does not generate an AUTO_INCREMENT value, or &false; if no MySQL connection was established. &reftitle.examples; ]]> &reftitle.notes; mysql_insert_id will convert the return type of the native MySQL C API function mysql_insert_id() to a type of long (named int in PHP). If your AUTO_INCREMENT column has a column type of BIGINT (64 bits) the conversion may result in an incorrect value. Instead, use the internal MySQL SQL function LAST_INSERT_ID() in an SQL query. For more information about PHP's maximum integer values, please see the integer documentation. Because mysql_insert_id acts on the last performed query, be sure to call mysql_insert_id immediately after the query that generates the value. The value of the MySQL SQL function LAST_INSERT_ID() always contains the most recently generated AUTO_INCREMENT value, and is not reset between queries. &reftitle.seealso; mysql_query mysql_info