PDOStatement->columnCount()

Returns the number of columns in the result set ()

Example 1777. Counting columns

This example demonstrates how PDOStatement->columnCount() operates with and without a result set.

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<?php

$dbh = new PDO('odbc:sample', 'db2inst1', 'ibmdb2');

$sth = $dbh->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");

?>

The above example will output:

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Before execute(), result set has 0 columns (should be 0)

After execute(), result set has 2 columns (should be 2)

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PDO->beginTransaction()
PDO->commit()
PDO->__construct()
PDO->errorCode()
PDO->errorInfo()
PDO->exec()
PDO->getAttribute()
PDO->getAvailableDrivers()
PDO->lastInsertId()
PDO->prepare()
PDO->query()
PDO->quote()
PDO->rollBack()
PDO->setAttribute()
PDOStatement->bindColumn()
PDOStatement->bindParam()
PDOStatement->bindValue()
PDOStatement->closeCursor()
PDOStatement->columnCount()
PDOStatement->errorCode()
PDOStatement->errorInfo()
PDOStatement->execute()
PDOStatement->fetch()
PDOStatement->fetchAll()
PDOStatement->fetchColumn()
PDOStatement->fetchObject()
PDOStatement->getAttribute()
PDOStatement->getColumnMeta()
PDOStatement->nextRowset()
PDOStatement->rowCount()
PDOStatement->setAttribute()
PDOStatement->setFetchMode()