PHP文件上传脚本阻碍

Question

我有这个表格

如果单击第一个单选按钮，则启用其下方的文本字段，如果单击第二个单选按钮，则启用文件上传，禁用前者，反之亦然。如果选择了文件上传选项，它工作正常，但如果选择了第一个单选按钮并且文件上传被禁用，它不会在数据库中插入数据。 :/ 即使文件上传被禁用/为空，应该怎么做才能成功发送表单详细信息？

代码：

 <form name="form" method="POST" enctype="multipart/form-data">
   <table width="416" height="245" border="1" align="center">
   <tr>
   <td colspan="2">Transaction No: <input type="text" name="transaction_no" id="transaction_no" /> </td>
   </tr>
   <tr>
   <td colspan="2" align="center">Please select the mode of payment</td>
   </tr>
   <tr>
   <td width="183" align="center"><input name="rad" type="radio" onclick="enableField(this)" value="Smart Money" checked="checked"> 
   Smart Money</td>
   <td width="201" align="center"><input name="rad" type="radio" onclick="enableField(this)" value="BPI"> BPI Bank Deposit</td>
   </tr>
   <tr>
   <td align="center"><input type="text" name="contactno" id="contactno"></td>
   <td align="center"><input name="filename" type="file" id="filename" disabled="disabled"/></td>
   </tr>
   <tr>
   <td>Total amount sent:</td>
   <td>&nbsp;<input type="text" name="totalsent" id="totalsent" /></td>
   </tr>
   <tr>
   <td>Date sent:</td>
   <td>&nbsp;<input type="text" name="datesent" id="datesent" /></td>
   </tr>
   <tr>
   <td colspan="2" align="center"><input name="submit" type="submit" id="submit" value="Submit" /></td>
   </tr>
   </table>
   <input type="hidden" name="MM_insert" value="form" />

   </form>

PHP

<?php

if(isset($_FILES['filename'])){
$errors = array();
$file_name = $_FILES['filename']['name'];
$file_size =$_FILES['filename']['size'];
$file_tmp =$_FILES['filename']['tmp_name'];
$file_type=$_FILES['filename']['type'];   
$file_ext=strtolower(end(explode('.',$_FILES['filename']['name'])));


$expensions= array("jpeg","jpg","png");         
if(in_array($file_ext,$expensions)=== false){
    $errors[]="extension not allowed, please choose a JPEG or PNG file.";
}
if($file_size > 2097152){
 $errors[]='File size must be excately 2 MB';
}          

// pag walang error...     
if (empty($errors)==true) {

    // upload the file...
    move_uploaded_file($file_tmp,"uploads/".$file_name);

    $servername = "localhost";
    $username = "root";
    $password = " ";
    $dbname = "admin";

    // create new record in the database
   include ("dbinfo.php");

    mysql_query("INSERT INTO payment_form (date, Tracking, mode, ContactNo, totalsent, datesent, filename) VALUES (NOW(), '$transactionNo', '$rad', '$contactNo', '$totalSent', '$dateSent', '$file_name')") ;

   header('Location: paymentform_success.php');
}else{
    print_r($errors);
}
}

?>

启用/禁用Javascript

<script type="text/javascript">
function enableField(obj){
var form=obj.form;
var txtNames=['contactno','filename'], f;
var rads=document.getElementsByName(obj.name), r, i=0;
while(r=rads[i++]){
f=form[txtNames[i-1]];
if(r.checked){
    f.removeAttribute('disabled');
    f.focus();
}
else{
    f.value='';
    f.setAttribute('disabled','disabled')
}
}
}
</script>

Answer 1

您应该首先检查检查了哪个收音机，然后决定要做什么。它不起作用，因为整个脚本都在if(isset($_FILES['filename'])) 下。如果文件上传被禁用，那么$_FILES 将不会被设置并且不会执行任何操作。