pg_result_status
(PHP 4 >= 4.2.0, PHP 5)
pg_result_status — Get status of query result
Description
pg_result_status() returns the status of a result resource, or the PostgreSQL command completion tag associated with the result
Parameters
-
result -
PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).
-
type -
Either
PGSQL_STATUS_LONGto return the numeric status of theresult, orPGSQL_STATUS_STRINGto return the command tag of theresult. If not specified,PGSQL_STATUS_LONGis the default.
Return Values
Possible return values are PGSQL_EMPTY_QUERY,
PGSQL_COMMAND_OK, PGSQL_TUPLES_OK, PGSQL_COPY_OUT,
PGSQL_COPY_IN, PGSQL_BAD_RESPONSE, PGSQL_NONFATAL_ERROR and
PGSQL_FATAL_ERROR if PGSQL_STATUS_LONG is
specified. Otherwise, a string containing the PostgreSQL command tag is returned.
Changelog
| Version | Description |
|---|---|
| 4.3.0 |
The type parameter was added.
|
Examples
Example #1 pg_result_status() example
<?php
// Connect to the database
$conn = pg_pconnect("dbname=publisher");
// Execute a COPY
$result = pg_query($conn, "COPY authors FROM STDIN;");
// Get the result status
$status = pg_result_status($result);
// Determine status
if ($status == PGSQL_COPY_IN)
echo "Copy began.";
else
echo "Copy failed.";
?>
The above example will output:
Copy began.
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Коментарии
0 = PGSQL_EMPTY_QUERY1 = 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
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).
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.
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