php – 从下拉列表中获取价值. (有点棘手)

发布时间：2020-12-13 22:44:53 所属栏目：PHP教程来源：网络整理

导读：首先,我对 PHP和编码很新,但是这里有. 我有一个Web表单,必须从txt文件(位于服务器上的文件夹中)获取一些信息我得到了如何让它从文件中获取信息以及如何制作下拉列表,显示文件夹中的所有文件. 我怎么想弄清楚如何使它们一起工作,所以它从中读取的文件名取自

首先,我对 PHP和编码很新,但是这里有.

我有一个Web表单,必须从txt文件(位于服务器上的文件夹中)获取一些信息
我得到了如何让它从文件中获取信息以及如何制作下拉列表,显示文件夹中的所有文件.
我怎么想弄清楚如何使它们一起工作,所以它从中读取的文件名取自下拉列表的选定值.

下拉列表的代码：

<? 
$currentdir = 'files'; //change to your directory 
$dir = opendir($currentdir); 

echo 'Files are as follows:<br>'; 
echo '<select name="select">'; 
while($file = readdir($dir)) 
{ 
    echo '<option value="'.$file.'">'.$file.'</option>'; 
} 
echo '</select>'; 
closedir($dir); ?>

以及从文件中读取的代码：

<input type="text" value="<?php $myFile = ""; $lines = file($myFile); echo $lines[2]; ?>" name="refnr" id="refnr" class="input" />

让我们说下拉列表显示2个文件,test.txt和test2.txt,如果我从下拉列表中选择test2.txt,我希望它将“test2.txt”放在“”at<？php $myFile =之间“”;
但无论我如何尝试将代码放在那里以获得所选值,它只是失败…

我现在的表格的完整代码：

<?php
if (!empty($_POST)) {

    // Used for later to determine result
    $success = $error = false;

    // Object syntax looks better and is easier to use than arrays to me
    $post = new stdClass;

    // Usually there would be much more validation and filtering,but this
    // will work for now.
    foreach ($_POST as $key => $val)
        $post->$key = trim(strip_tags($_POST[$key]));

    // Check for blank fields
    if (empty($post->refnr))
        $error = true;

    else {

        // Get this directory,to include other files from
        $dir = dirname(__FILE__);

        // Get the contents of the pdf into a variable for later
        ob_start();
        require_once($dir.'/pdf.php');
        $pdf_html = ob_get_contents();
        ob_end_clean();

        // Load the dompdf files
        require_once($dir.'/dompdf/dompdf_config.inc.php');

        $dompdf = new DOMPDF(); // Create new instance of dompdf
        $dompdf->load_html($pdf_html); // Load the html
        $dompdf->render(); // Parse the html,convert to PDF
        $pdf_content = $dompdf->output(); // Put contents of pdf into variable for later

        // Get the contents of the HTML email into a variable for later
        ob_start();
        require_once($dir.'/html.php');
        $html_message = ob_get_contents();
        ob_end_clean();

        // Load the SwiftMailer files
        require_once($dir.'/swift/swift_required.php');

        $mailer = new Swift_Mailer(new Swift_MailTransport()); // Create new instance of SwiftMailer

        $message = Swift_Message::newInstance()
                       ->setSubject('Felanmalan') // Message subject
                       ->setTo(array('mymail@hidden' => 'Fel')) // Array of people to send to
                       ->setFrom(array('mymail@hidden' => 'Fel')) // From:
                       ->setBody($html_message,'text/html') // Attach that HTML message from earlier
                       ->attach(Swift_Attachment::newInstance($pdf_content,'Felanmalan.pdf','application/pdf')); // Attach the generated PDF from earlier

        // Send the email,and show user message
        if ($mailer->send($message))
            $success = true;
        else
            $error = true;

    }

}
?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8" />
    <title>Felanm&auml;lan fr&aring;n IKEA</title>
    <style type="text/css">
        html,body,h1,h2,h3,h4,h5,h6,p,span,ul,li,div,form,input,select,textarea,button {margin:0; padding:0;}
        ul {list-style:none;}
        a,a:hover {text-decoration:none; outline:0;}
        a img {border:0;}

        body {font:12px/16px Verdana,Arial,sans-serif; background:#ffffff;}
        #container {width:450px; margin:10px auto; padding:10px; overflow:hidden; border:1px solid #000; border-radius:10px; -moz-border-radius:10px; -webkit-border-radius:10px; background:#F9F9F9;}
        #container h1 {margin-bottom:20px; font-size:40px; line-height:40px; font-family:'HelveticaNeue-Light','Helvetica Neue',Helvetica,sans-serif; font-weight:normal;}
        .message {margin-bottom:10px; padding:5px;}
        .success {color:#4F8A10; border:1px solid #4F8A10; background:#DFF2BF;}
        .error {color:#D8000C; border:1px solid #D8000C; background:#FFBABA;}
        label {display:block; margin-bottom:3px; cursor:pointer;}
        .input,button {display:block; width:440px; margin-bottom:10px; padding:3px; font:22px/22px 'HelveticaNeue-Light',sans-serif; border:1px solid #CCC; border-top-width:2px;}
        textarea {font-size:13px; line-height:16px;}
        select {width:396px;}
        button {float:right; width:auto; margin-bottom:0; padding:3px 30px; cursor:pointer; font-size:16px; border:1px solid #999; border-bottom-width:2px; border-radius:5px; -moz-border-radius:5px; -webkit-border-radius:5px; background:#EEE;}
        button:active {border-bottom-width:1px; padding:4px 30px 3px; background:#E9E9E9;}
    </style>
</head>
<body>
<? 
$currentdir = 'files'; //change to your directory 
$dir = opendir($currentdir); 

echo 'Files are as follows:<br>'; 
echo '<select name="select">'; 
while($file = readdir($dir)) 
{ 
    echo '<option value="'.$file.'">'.$file.'</option>'; 
} 
echo '</select>'; 
closedir($dir); ?>

    <div id="container">

        <h1><img src="felimg.png" />  Felanm&auml;lan</h1>

        <?php if ($success) { ?>
            <div class="message success">
                <h4>Congratulations! It worked! Now check your email.</h4>
            </div>
        <?php } elseif ($error) { ?>
            <div class="message error">
                <h4>Sorry,an error occurred. Try again!</h4>
            </div>
        <?php } ?>

        <form method="post" action="">
            <label for="date"><b>Date:</b></label>
            <input type="text" readonly name="date" id="date" class="input" value="<? print(Date("Y-m-d")); ?>"/>

            <label for="refnr"><b>Referensnummer:</b></label>
            <input type="text" value="<?php $myFile = ""; $lines = file($myFile); echo $lines[2]; ?>" name="refnr" id="refnr" class="input" />

            <label for="bestav"><b>Best&auml;lld av:</b></label>
            <input type="text" name="bestav" id="bestav" class="input" />           

            <label for="tel"><b>Tel:</b></label>
            <input type="text" name="tel" id="tel" class="input" />

            <label for="email"><b>Email:</b></label>
            <input type="text" name="email" id="email" class="input" />         

            <label for="kund"><b>Kund:</b></label>
            <textarea name="kund" id="kund" rows="4" cols="40"></textarea>

            <label for="ktel"><b>Tel:</b></label>
            <input type="text" name="ktel" id="ktel" class="input" />

            <label for="art"><b>Ber&ouml;rd Artikel:</b></label>
            <textarea name="art" id="art" rows="3" cols="40"></textarea>

            <label for="fel"><b>Fel p&aring; varan: </b></label>
            <textarea name="fel" id="fel" rows="2" cols="40"></textarea>

            <label for="q1"><b>Installation gjord av fackman:</b></label>
            <select name="q1" id="q1">
                <option value="Ja">Ja</option>
                <option value="Nej">Nej</option>
            </select>

            <label for="q2"><b>Serviceverkstad:</b></label>
            <input type="text" name="q2" id="q2" class="input" />

            <label for="q3"><b>Servicenr:</b></label>
            <input type="text" name="q3" id="q3" class="input" />

            <label for="q4"><b>Serienr:</b></label>
            <input type="text" name="q4" id="q4" class="input" />

            <label for="q5"><b>Inom garanti eller reklamation:</b></label>
            <select name="q5" id="q5">
                <option value="Garanti">Garanti</option>
                <option value="Reklamation">Reklamation</option>
            </select>

            <label for="q6"><b>Informerat om punkt 8:</b></label>
            <select name="q6" id="q6">
                <option value="Ja">Ja</option>
                <option value="Nej">Nej</option>
            </select>           

            <label for="q7"><b>Har kund sj&auml;lv g&aring;tt igenom manual f&ouml;r fels&ouml;kning:</b></label>
            <select name="q7" id="q7">
                <option value="Ja">Ja</option>
                <option value="Nej">Nej</option>
            </select>               

            <label for="q8"><b>Ordernr:</b></label>
            <input type="text" name="q8" id="q8" class="input" />

            <label for="q9"><b>Ink&ouml;psdatum:</b></label>
            <input type="date" name="q9" id="q9" class="input" /><br>


            <p><button type="submit">Submit!</button></p>
        </form>

    </div>

</body>
</html>

希望它有意义再次,抱歉,如果它原来是一个菜鸟问题:)我用了2天谷歌搜索和测试,我只是到了一个点,我需要再次向正确的方向推进.

提前致谢.

ps解释我的目标是什么,然后我有1个webform生成一个txt文件并将其保存在服务器上,然后是另一个表单,其中“admin”可以从下拉列表中选择文件,获取信息客户填写了txt版本,然后填写他需要填写的内容,然后将其保存并以PDF格式发送给技术人员.

解决方法

你可以用

echo '<select id="select" name="select">'; 
while($file = readdir($dir)) 
{ 
    echo '<option value="'.$file.'">'.$file.'</option>'; 
} 
echo '</select>';

在将其加载到DOM之后,请使用

document.getElementById('select').onchange=changeSelect;
function changeSelect(){
    document.getElementById('refnr').value=document.getElementById('select').value;
}
changeSelect();

在此处查看：http://jsfiddle.net/7nzBS/

（编辑：李大同）

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