php - 使用php mysql在单个表中进行多项选择

Question

我正在尝试从单个表中提取多行。我正在尝试拉动不同邮政编码的所有男性或所有女性。

<?php
$zipCodes = array("55555", "66666", "77777", etc...);

$fetchUser = mysql_query("select * from users where gender = '$_POST[gender]' ".implode(" or zipCode = ", $zipCodes)." order by id desc");
while($var = mysql_fetch_array($fetchUser)) {
  code...
}
?>

Answer 1

你应该使用IN，

SELECT ...
FROM   tableName
WHERE gender = '$_POST[gender]' AND
      zipCode IN (55555, 6666, 77777)

目前您的代码容易受到 SQL 注入(inject)攻击。请阅读 PDO 或 MySQLI 扩展。

Read more on this article: Best way to prevent SQL injection in PHP
PHP PDO: Can I bind an array to an IN() condition?