ingres_unbuffered_query
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ingres_unbuffered_query — Send an unbuffered SQL query to Ingres
说明
$link
, string $query
[, array $params
[, string $types
]] ) ingres_unbuffered_query() sends the given
query to the Ingres server.
The query becomes part of the currently open transaction. If there is no open transaction, ingres_unbuffered_query() opens a new transaction. To close the transaction, you can call either ingres_commit() to commit the changes made to the database or ingres_rollback() to cancel these changes. When the script ends, any open transaction is rolled back (by calling ingres_rollback() ). You can also use ingres_autocommit() before opening a new transaction to have every SQL query immediately committed. Ingres allows only a single unbuffered statement to be active at any one time. The extension will close any active unbuffered statements before executing any SQL. In addition you cannot use ingres_result_seek() to position the row before fetching.
Note: Related Configurations
See also the ingres.describe and ingres.utf8 directives in Runtime Configuration.
参数
-
link -
The connection link identifier
-
query -
A valid SQL query (see the Ingres SQL reference guide) in the Ingres documentation. See the query parameter in ingres_query() for a list of SQL statements that cannot be executed via ingres_unbuffered_query() .
Data inside the query should be properly escaped.
-
params -
An array of parameter values to be used with the query
-
types -
A string containing a sequence of types for the parameter values passed. See the types parameter in ingres_query() for the list of type codes.
返回值
ingres_unbuffered_query() returns a query result identifier when
there are rows to fetch; else it returns FALSE when there are no rows, as
is the case of an INSERT, UPDATE, or DELETE statement. To see if an error
occurred, use ingres_errno() ,
ingres_error() , or
ingres_errsqlstate() .
范例
Example #1 Issue a simple un-buffered select
<?php
$link = ingres_connect ( "demodb" );
$result = ingres_unbuffered_query ( $link , "select * from user_profile" );
while ( $row = ingres_fetch_row ( $result )) {
echo $row [ 1 ];
echo $row [ 2 ];
}
?> Example #2 Passing query parameters to ingres_unbuffered_query()
<?php
$link = ingres_connect ( "demodb" );
$params [] = "Emma" ;
$query = "select * from user_profile where up_first = ?" ;
$result = ingres_unbuffered_query ( $link , $query , $params );
while ( $row = ingres_fetch_row ( $result )) {
echo $row [ 1 ];
echo $row [ 2 ];
}
?> Example #3 Inserting a BLOB with parameter types
<?php
$link = ingres_connect ( "demodb" );
//Open a photo
$fh = fopen ( "photo.jpg" , "r" );
$blob_data = stream_get_contents ( $fh );
fclose ( $fh );
//Prepare parameters
$params [] = $blob_data ;
$params [] = 1201 ;
//Define parameter types
$param_types = "Bi" ;
$query = "update user_profile set up_image = ? where up_id = ?" ;
$result = ingres_unbuffered_query ( $link , $query , $params , $param_types );
if ( ingres_errno ())
{
echo ingres_errno () . "-" . ingres_error () . "\n" ;
}
?> 参见
- ingres_query() - Send an SQL query to Ingres
- ingres_fetch_array() - Fetch a row of result into an array
- ingres_fetch_assoc() - Fetch a row of result into an associative array
- ingres_fetch_object() - Fetch a row of result into an object
- ingres_fetch_row() - Fetch a row of result into an enumerated array
- ingres_commit() - Commit a transaction
- ingres_rollback() - Roll back a transaction
- ingres_autocommit() - Switch autocommit on or off
- ingres_set_environment() - Set environment features controlling output options
- ingres_errno() - Get the last Ingres error number generated
- ingres_error() - Get a meaningful error message for the last error generated