SQL语句不能在PHP中删除

Question

echo $_POST['IDnum'];
$result = pg_prepare($conn, "city_delete",
    "DELETE FROM lab5.city WHERE lab5.city.id = $1");
$result = pg_execute($conn, "city_delete", array($_POST['IDnum']));

这将显示要删除的行的正确ID号，并将在PSQL中删除它，但在PHP内部实现时不会删除？有什么想法吗？

Answer 1

试试这个：

$result = pg_prepare($conn, "city_delete",
'DELETE FROM lab5.city WHERE lab5.city.id = $1');

您使用的双引号使$ 1变为PHP变量而不是字符串。

请参阅此处的pg_prepare示例：http://php.net/manual/en/function.pg-prepare.php