PDOStatement->columnCount()
(no version information, might be only in CVS)
PDOStatement->columnCount() -- Returns the number of columns in the result setOpis
class PDOStatement {int columnCount ( void )
}
Use PDOStatement->columnCount() to return the number of columns in the result set represented by the PDOStatement object.
If the PDOStatement object was returned from PDO->query(), the column count is immediately available.
If the PDOStatement object was returned from PDO->prepare(), an accurate column count will not be available until you invoke PDOStatement->execute().
Zwracane wartości
Returns the number of columns in the result set represented by the PDOStatement object. If there is no result set, PDOStatement->columnCount() returns 0.
Przykłady
Przykład 1. Counting columns This example demonstrates how PDOStatement->columnCount() operates with and without a result set.
Powyższy przykład wyświetli:
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