(PHP 5, PHP 7, PHP 8)
mysqli_stmt::attr_set -- mysqli_stmt_attr_set — Used to modify the behavior of a prepared statement
Nesne yönelimli kullanım
Yordamsal kullanım
Used to modify the behavior of a prepared statement. This function may be called multiple times to set several attributes.
deyim
Sadece yordamsal tarz: mysqli_stmt_init() işlevinden dönen bir mysqli_stmt nesnesi.
attribute
The attribute that you want to set. It can have one of the following values:
Character | Description |
---|---|
MYSQLI_STMT_ATTR_UPDATE_MAX_LENGTH | Setting to true causes mysqli_stmt_store_result() to update the metadata MYSQL_FIELD->max_length value. |
MYSQLI_STMT_ATTR_CURSOR_TYPE | Type of cursor to open for statement when mysqli_stmt_execute() is invoked. value can be MYSQLI_CURSOR_TYPE_NO_CURSOR (the default) or MYSQLI_CURSOR_TYPE_READ_ONLY . |
MYSQLI_STMT_ATTR_PREFETCH_ROWS | Number of rows to fetch from server at a time when using a cursor. value can be in the range from 1 to the maximum value of unsigned long. The default is 1. |
If you use the MYSQLI_STMT_ATTR_CURSOR_TYPE
option with MYSQLI_CURSOR_TYPE_READ_ONLY
, a cursor is opened for the statement when you invoke mysqli_stmt_execute(). If there is already an open cursor from a previous mysqli_stmt_execute() call, it closes the cursor before opening a new one. mysqli_stmt_reset() also closes any open cursor before preparing the statement for re-execution. mysqli_stmt_free_result() closes any open cursor.
If you open a cursor for a prepared statement, mysqli_stmt_store_result() is unnecessary.
value
The value to assign to the attribute.
Eğer mysqli hata bildirimi etkinse (MYSQLI_REPORT_ERROR
) ve istenen işlem başarısız olursa bir uyarı üretilir. Ek olarak, kip MYSQLI_REPORT_STRICT
ise bunun yerine mysqli_sql_exception istisnası oluşur.