PDO :: query
PDO :: query - execute SQL statements, returns PDOStatement object that can be understood as the result set (PHP 5> = 5.1.0, PECL pdo> = 0.2.0)
Explanation
grammar
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 $object )
PDO :: query () call in a separate function and execute the SQL statement that returns a result set (if any), the statement is returned as a PDOStatement object.
parameter
statement
SQL statement for execution.
return value
If successful, PDO :: query () returns PDOStatement object if it fails to return FALSE.
Examples
PDO :: query examples
Traversal output result set:
<?php function getFruit($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"; } } ?>
Above output is:
apple red 150 banana yellow 250 kiwi brown 75 lemon yellow 25 orange orange 300 pear green 150 watermelon pink 90