Returns the async operation status for a given mysql connection

function mysql_async_status(
  resource $link_identifier = NULL,
): int;

For non-async connections, this returns ASYNC_OP_INVALID. For an async connection, this can be either ASYNC_OP_UNSET (no pending async operation), ASYNC_OP_QUERY (async query pending), or ASYNC_OP_CONNECT (async connection pending). Returns -1 if the supplied connection itself is invalid.


  • resource $link_identifier = NULL - The MySQL connection


  • int - - Returns the async operation number for this mysql connection.