db2_free_stmt
(PECL ibm_db2 >= 1.0.0)
db2_free_stmt — Frees resources associated with the indicated statement resource
Description
bool db2_free_stmt
( resource
$stmt
)Frees the system and database resources that are associated with a statement resource. These resources are freed implicitly when a script finishes, but you can call db2_free_stmt() to explicitly free the statement resources before the end of the script.
Parameters
-
stmt -
A valid statement resource.
Return Values
Returns TRUE on success or FALSE on failure.
- PHP Руководство
- Функции по категориям
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- Справочник функций
- Расширения для работы с базами данных
- Расширения для работы с базами данных отдельных производителей
- IBM DB2, Cloudscape and Apache Derby
- db2_autocommit
- db2_bind_param
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- db2_close
- db2_column_privileges
- db2_columns
- db2_commit
- db2_conn_error
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- db2_field_name
- db2_field_num
- db2_field_precision
- db2_field_scale
- db2_field_type
- db2_field_width
- db2_foreign_keys
- db2_free_result
- db2_free_stmt
- db2_get_option
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- db2_lob_read
- db2_next_result
- db2_num_fields
- db2_num_rows
- db2_pclose
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- db2_stmt_error
- db2_stmt_errormsg
- db2_table_privileges
- db2_tables
Коментарии
Update: as of version 1.9.2, db2_free_stmt() was not only deprecated, but its functionality removed completely. It returns TRUE but does nothing.
Instead of db2_free_stmt(), use the aforementioned $stmt = ''; to trigger the statement's destructor.
It is advised to destroy the statement resource in this way if the statement variable is later re-used with another db2_prepare in the same request.
Example:
$stmt = db2_prepare($conn, $sql1);
// more code goes here
$stmt = ''; // destroy statement resource before assigning another statement to the same variable.
$stmt = db2_prepare($conn, $sql2);