Question

这是我表单中的$ _POST数组。

Array ( [prescribedid] => Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 9 [4] => 13 )

我想为数组中的任何项创建一个选择。我已经写了这个，它产生了正确的SELECT，但if（）消除了尾随的OR使它变得笨重。

$query = "SELECT * ";
$query .= "FROM prescribed WHERE ";

for($i=0; $i<count($_POST["prescribedid"]); $i++) {
    $query .= "prescribedid={$_POST['prescribedid'][$i]} ";
        if($i < (count($_POST["prescribedid"])-1)) {
        $query .= "OR ";
        }
}

它产生了这个：

SELECT * FROM prescribed WHERE prescribedid=1 OR prescribedid=2 OR prescribedid=3 OR prescribedid=9 OR prescribedid=13

是否有另一种方法可以对SELECTS进行分组或编写FOR（）以使其更清晰，即没有最后的IF（）。

Answer 1

$values=implode(",",$_POST["prescribedid"]);
$query = "SELECT * FROM prescribed WHERE  prescribedid IN ($values)";

Sanitization 就在你身上:)）

Answer 2

使用MySQL IN子句

$ids = implode(",",$_POST["prescribedid"]);
$query = "SELECT * FROM prescribed WHERE  prescribedid IN ($ids)";

Answer 3

您好您可以使用In condition。使用imploade函数查找逗号seoarated值

$data = array('prescribedid'=>array(1,2,3,9,14));
$query = 'SELECT * FROM prescribed WHERE  prescribedid IN (';
$query .= implode(',',$data['prescribedid']).')';
echo $query ;

输出

SELECT * FROM prescribed WHERE prescribedid IN (1,2,3,9,14)

Answer 4

您可以在此处使用IN子句。

请参阅MySQL IN clause

$query = "SELECT * FROM prescribed WHERE  prescribedid IN ".implode(',', $_POST["prescribedid"]);

从$ _POST数组构建mysql select

4 个答案: