PHP 循环遍历表单值

我有一个表单，提交了许多小字段，我需要循环遍历这些字段并对其执行操作。

表格如下所示：

<input class="" type="hidden" name="pid" value="10">
<input class="" type="hidden" name="date" value="01-01-2014">

然后大约有 100 - 200 个......

<input class="minnight" type="text" name="minnight_12_2014-03-06" value="2" size="1">
<input class="minnight" type="text" name="minnight_12_2014-03-07" value="2" size="1">
<input class="minnight" type="text" name="minnight_12_2014-03-08" value="1" size="1">
<input class="minnight" type="text" name="minnight_13_2014-03-06" value="3" size="1">
<input class="minnight" type="text" name="minnight_13_2014-03-07" value="2" size="1">
<input class="minnight" type="text" name="minnight_13_2014-03-08" value="4" size="1">
<input class="minnight" type="text" name="minnight_14_2014-03-06" value="1" size="1">
<input class="minnight" type="text" name="minnight_14_2014-03-07" value="2" size="1">
<input class="minnight" type="text" name="minnight_14_2014-03-08" value="2" size="1">

提交表单时，我需要循环遍历每个“minnight”字段，将“12_2014-03-06”提取为“12”和“2014-03-06”，将它们都存储在变量中，最后进行数据库查询在进入下一个之前。

有什么指示我应该从哪里开始处理这个混乱的事情吗？

看看使用爆炸（） http://www.php.net/manual/en/function.explode.php and 发布变量 http://www.php.net/manual/en/reserved.variables.post.php.

尝试一些类似的事情：

// Loop over each item in the form.
foreach($_POST as $name => $value) {
    // Split the name into an array on each underscore.
    $splitString = explode("_", $name);

    // If the data begins with "minnight", use it.
    if ($splitString[0] == "minnight") {
        // Set the other desired values into variables.
        $secondValue = $splitString[1];
        $thirdValue= $splitString[2];

        // Database query goes here.
    }
}