attr-set
mysqli_stmt::attr_set
mysqli_stmt_attr_set
Used to modify the behavior of a prepared statement
ENTITY
ENTITY
public
bool
mysqli_stmt::attr_set
int
attribute
int
value
ENTITY
bool
mysqli_stmt_attr_set
mysqli_stmt
statement
int
attribute
int
value
Used to modify the behavior of a prepared statement. This function may be called multiple times to set several attributes.
ENTITY
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 ENTITY causes mysqli_stmt_store_result to update the metadata MYSQL_FIELD-ENTITYmax_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. Removed as of PHP 8.4.0. |
Attribute values {#mysqli-stmt.attr-set.parameters}
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.
ENTITY
ENTITY
ENTITY ENTITY
ENTITY
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