php - 如何控制 PHP 中的出现顺序？

Question

我目前的页面设置如下:

PHP Variable Declarations
HTML header, then a form to submit GET query
The PHP that processes some stuff based on the GET data
a bit of JavaScript that makes a pretty graph from the retrieved, processed data

我想要做的是在页面首次加载时仅显示表单，然后在输入查询时让图表显示在页面底部。它使用了flot库，JS目前看起来像这样:

<script id="source" language="javascript" type="text/javascript">   
$.plot($("#test"), [ [[0, 0], [1, 1]] ], { yaxis: { max: 1 } });
</script>

我需要用一些事件处理程序或其他东西替换 $.plot 吗？我是个 JS 新手!

谢谢!

Answer 1

我个人会使用 php(但我对 JS 很垃圾...所以我有偏见...=))

<?php

$formSubmitted = $_POST['formSubmitted'];

    if (!isset($formSubmitted)) { ?>
    <form method="post" enctype="form/multipart" action="<?php echo $_SERVER['PHP_SELF']; ?>">

    <input name="formSubmitted" id="formSubmitted" type="hidden" value="1" />

    ...

    </form>
                               <?php }

    else {

      // show the graph

         }

    ?>