sqlsrv_cancel

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sqlsrv_cancelCancels a statement

Beschreibung

bool sqlsrv_cancel ( resource $stmt )

Cancels a statement. Any results associated with the statement that have not been consumed are deleted. After sqlsrv_cancel() has been called, the specified statement can be re-executed if it was created with sqlsrv_prepare(). Calling sqlsrv_cancel() is not necessary if all the results associated with the statement have been consumed.

Parameter-Liste

stmt

The statement resource to be cancelled.

Rückgabewerte

Gibt bei Erfolg TRUE zurück. Im Fehlerfall wird FALSE zurückgegeben.

Beispiele

Beispiel #1 sqlsrv_cancel() example

<?php
$serverName 
"serverName\sqlexpress";
$connectionInfo = array( "Database"=>"dbName""UID"=>"username""PWD"=>"password");
$conn sqlsrv_connect$serverName$connectionInfo);
if( 
$conn === false ) {
     die( 
print_rsqlsrv_errors(), true));
}

$sql "SELECT Sales FROM Table_1";

$stmt sqlsrv_prepare$conn$sql);

if( 
$stmt === false ) {
     die( 
print_rsqlsrv_errors(), true));
}

if( 
sqlsrv_execute$stmt ) === false) {
     die( 
print_rsqlsrv_errors(), true));
}

$salesTotal 0;
$count 0;

while( (
$row sqlsrv_fetch_array$stmt)) && $salesTotal <=100000)
{
     
$qty $row[0];
     
$price $row[1];
     
$salesTotal += ( $price $qty);
     
$count++;
}

echo 
"$count sales accounted for the first $$salesTotal in revenue.<br />";

// Cancel the pending results. The statement can be reused.
sqlsrv_cancel$stmt);
?>

Anmerkungen

The main difference between sqlsrv_cancel() and sqlsrv_free_stmt() is that a statement resource cancelled with sqlsrv_cancel() can be re-executed if it was created with sqlsrv_prepare(). A statement resource cancelled with sqlsrv_free_statement() cannot be re-executed.

Siehe auch

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