PDOStatement::columnCount Returns the number of columns in the result set &reftitle.description; public intPDOStatement::columnCount 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. &reftitle.parameters; &no.function.parameters; &reftitle.returnvalues; Returns the number of columns in the result set represented by the PDOStatement object, even if the result set is empty. If there is no result set, PDOStatement::columnCount returns 0. &reftitle.examples; This example demonstrates how PDOStatement::columnCount operates with and without a result set. prepare("SELECT name, colour FROM fruit"); /* Count the number of columns in the (non-existent) result set */ $colcount = $sth->columnCount(); print("Before execute(), result set has $colcount columns (should be 0)\n"); $sth->execute(); /* Count the number of columns in the result set */ $colcount = $sth->columnCount(); print("After execute(), result set has $colcount columns (should be 2)\n"); ?> ]]> &example.outputs; &reftitle.seealso; PDO::prepare PDOStatement::execute PDOStatement::rowCount