在PHP PDO中使用MySQL函數准備語句

Question

在使用PHP PDO時使用MySQL函數的正確方法是什么？ 現在將函數NOW（）保存為字符串，而不顯示時間。

$sth = $dbh->prepare("INSERT INTO pdo (namespace, count, teststring) VALUES (?, ?, ?)");
// these protect you from injection
$sth->bindParam(1, $_a);
$sth->bindParam(2, $_b);
$sth->bindParam(3, $_c);

$_a = 'Wishy-washy';
$_b = 123;
$_c = 'NOW()'; // Doesn't work. Comes out as the string 'NOW()' (w/o the quotes) and not as a date

Answer 1

我不會通過函數作為綁定參數：

$sth = $dbh->prepare("INSERT INTO pdo (namespace, count, teststring) VALUES (?, ?, NOW())");

$_a = 'Wishy-washy';
$_b = 123;

$sth->execute(array($_a, $_b));

Answer 2

為什么不將其替換為類似..

$_c = date("H:i:s");

使用PHP日期函數的功能？