PDO::query讲解

public PDOStatement PDO::query ( string $statement )

public PDOStatement PDO::query ( string $statement , int $PDO::FETCH_COLUMN , int $colno )

public PDOStatement PDO::query ( string $statement , int $PDO::FETCH_CLASS , string $classname , array $ctorargs )

public PDOStatement PDO::query ( string $statement , int $PDO::FETCH_INTO , object $object )

<?php
function getFruit($conn) {
  $sql = 'SELECT name, color, calories FROM fruit ORDER BY name';
  foreach ($conn->query($sql) as $row) {
    print $row['name'] . "\t";
    print $row['color'] . "\t";
    print $row['calories'] . "\n";
  }
}
?>