sqlsrv_free_stmt

Frees all resources for the specified statement

説明

bool sqlsrv_free_stmt(resource $stmt)

Frees all resources for the specified statement. The statement cannot be used after sqlsrv_free_stmt has been called on it. If sqlsrv_free_stmt is called on an in-progress statement that alters server state, statement execution is terminated and the statement is rolled back.

パラメータ

stmt: The statement for which resources are freed. Note that null is a valid parameter value. This allows the function to be called multiple times in a script.

戻り値

成功した場合に true を、失敗した場合に false を返します。

例

例1 sqlsrv_free_stmt example

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

$stmt = sqlsrv_query( $conn, "SELECT * FROM Table_1");
if( $stmt === false ) {
     die( print_r( sqlsrv_errors(), true));
}

/*-------------------------------
     Process query results here.
-------------------------------*/

/* Free the statement resources. */
sqlsrv_free_stmt( $stmt);

?>

注意

The main difference between sqlsrv_free_stmt and sqlsrv_cancel 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.

参考

sqlsrv_cancel