Question

在表单中，没有输入是强制性的。所以，我希望在wpdb查询中有一个动态的“where”子句。

目前这是查询：

$data = $wpdb->get_results($wpdb->prepare("SELECT * FROM 
`wp_gj73yj2g8h_hills_school_data` where
`school_zipcode` = %d AND `school_type` = %s AND `school_rating` = %s 
;",$selectedZip,$selectedType,$selectedRating));

如果用户只输入school_zipcode，那么where子句应该只有“school_zipcode”列。其他组合的方式相同。

Answer 1

我不会在动态where子句中使事情变得复杂......我会编写创建查询的PHP代码。例如......

请注意！这个代码没有在服务器上测试，它只是一个想法如何解决问题！

<?php
$where_query = array();

// Make sure to escape $_POST
if (!empty($_POST['school_zipcode')) {
  $where_query[] = "school_zipcode='" . $_POST['school_zipcode'] . "'";
}

// Make sure to escape $_POST
if (!empty($_POST['school_type')) {
  $where_query[] = "school_type='" . $_POST['school_type'] . "'";
}

// Should result in WHERE school_zipcode='123' AND school_type='text'
$where_query_text = " WHERE " . implode(' AND ', $where_query);

$data = $wpdb->get_results($wpdb->prepare("SELECT * FROM `wp_gj73yj2g8h_hills_school_data` " . $where_query_text  . ";"));

wpdb中的动态“Where”子句 - ＆gt;准备查询

1 个答案: