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(PHP 5)
mysqli_affected_rows(no version information, might be only in CVS)
mysqli->affected_rows -- Gets the number of affected rows in a previous MySQL operationProcedural style:
mixed mysqli_affected_rows ( mysqli link )Object oriented style (property):
class mysqli {mysqli_affected_rows() returns the number of rows affected by the last INSERT, UPDATE, or DELETE query associated with the provided link parameter. If the last query was invalid, this function will return -1.
Nota: For SELECT statements mysqli_affected_rows() works like mysqli_num_rows().
The mysqli_affected_rows() function only works with queries which modify a table. In order to return the number of rows from a SELECT query, use the mysqli_num_rows() function instead.
An integer greater than zero indicates the number of rows affected or retrieved. Zero indicates that no records where updated for an UPDATE statement, no rows matched the WHERE clause in the query or that no query has yet been executed. -1 indicates that the query returned an error.
Nota: If the number of affected rows is greater than maximal int value, the number of affected rows will be returned as a string.
Esempio 2. Procedural style
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The above example will output:
Affected rows (INSERT): 984 Affected rows (UPDATE): 168 Affected rows (DELETE): 815 Affected rows (SELECT): 169 |
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Generated: 2007-01-26 17:56:28