pg_result_status()
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
获得查询结果的状态
说明
pg_result_status(resource $result): int
pg_result_status()返回该查询结果资源的状态。可能的返回值有 PGSQL_EMPTY_QUERY,PGSQL_COMMAND_OK,PGSQL_TUPLES_OK,PGSQL_COPY_TO,PGSQL_COPY_FROM,PGSQL_BAD_RESPONSE,PGSQL_NONFATAL_ERROR 和 PGSQL_FATAL_ERROR。
参见pg_connection_status()。
0 = PGSQL_EMPTY_QUERY 1 = PGSQL_COMMAND_OK 2 = PGSQL_TUPLES_OK 3 = PGSQL_COPY_TO 4 = PGSQL_COPY_FROM 5 = PGSQL_BAD_RESPONSE 6 = PGSQL_NONFATAL_ERROR 7 = PGSQL_FATAL_ERROR
This function is useful it may not return a full non fatal error but you want to see if the query completes anyway. example <?PHP //connect to pg database // create PGSQL $PGSTAT = pg_result_status($PGSQL);//defaults to long //And run it through a check for example if(($PGSTAT == 1) || ($PGSTAT == 2)){ // for query results; }else if(($PGSTAT == 3) || ($PGSTAT == 4)){ // for copy results; } if(($PGSTAT != 0) && ($PGSTAT != 5) && ($PGSTAT != 6) && ($PGSTAT != 7)){ // your code; }else{ // $ERRORS codes; } // This is worked the best for me so far I tried using // The command tag and I seem to still get an numeric result //example //$PGSTAT = pg_result_status($PGSQL, PGSQL_COMMAND_OK); // got something like tuples ok so I recommend just use default long ?> or use what ever condition check you feel fit
The postgres docs say that PHP should never be able to return PGRES_NONFATAL_ERROR "A result of status PGRES_NONFATAL_ERROR will never be returned directly by PQexec or other query execution functions" http://www.postgresql.org/docs/current/static/libpq-exec.html Therefore you cannot use this function to check if this query produced a notice.
If on "accident" your program passes pg_result_status a variable that is NOT a actual pg resource, it will return an empty string. (This is important to know if you want to make sure a pg resource is "good" before attempting some operation on it).