Question

我无法在一个查询中找到更新三个表的答案。我有三个名为order1，order2，order3.in的表，每个表都有固定的所有列字段，如teacher_name，kitname，kit_quantity，total_amt，paid。现在我想将付费列记录更新为＆＃34;付费＆＃34;哪里有人使用条件。任何人都可以帮助我。我真的需要完成这个项目。这些表格如下：

order1              
id  teacher_name    kitname kit_quantity    total_amt   paid
1   Amrish Bhoi product 1   2   600 unpaid
2   Geeta Naik  product2    5   4500    paid
3   geeta naik  product1    2   100 unpaid
4   Amrish Bhoi product3    1   200 paid

order2              
id  teacher_name    kitname kit_quantity    total_amt   paid
1   Shindhu Sakpal  product 3   2   600 Paid
2   Geeta Naik  product2    5   4500    paid
3   geeta naik  product1    2   100 unpaid
4   Amrish Bhoi product3    4   200 unpaid

order3              
id  teacher_name    kitname kit_quantity    total_amt   paid
1   Amrish Bhoi product 1   2   600 unpaid
2   Geeta Naik  product2    5   4500    paid
3   Harsha Kale product4    3   1800    unpaid
4   Amrish Bhoi product3    1   200 paid
5   Amrish Bhoi product3    1   600 unpaid

Answer 1

要使用three tables更新same structure，different names，您可以使用list of table names并使用foreach loop，如下所示：

<?php

    $tableNames = array("order1", "order2", "order3");

    foreach($tableNames as $table)
    {
        $query = 'UPDATE '.$table.' SET paid = "Paid" WHERE paid = "unpaid"';
        mysqli_query($dbCon, $query);
    }
?>

如何使用PHP中的mysql在一个查询中更新三个表

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