PHP pdao用法总结

$sql = ‘SELECT name, colour, calories

    FROM fruit

    WHERE calories < :calories AND colour = :colour‘;

$sth = $dbh->prepare($sql, array(PDO::ATTR_CURSOR => PDO::CURSOR_FWDONLY));

$sth->execute(array(‘:calories‘ => 150, ‘:colour‘ => ‘red‘));

$red = $sth->fetchAll();

$sth->execute(array(‘:calories‘ => 175, ‘:colour‘ => ‘yellow‘));

$yellow = $sth->fetchAll();

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$sth = $dbh->prepare(‘SELECT name, colour, calories

    FROM fruit

    WHERE calories < ? AND colour = ?‘);

$sth->execute(array(150, ‘red‘));

$red = $sth->fetchAll();

$sth->execute(array(175, ‘yellow‘));

$yellow = $sth->fetchAll();