我正在开发一个与WordPress一起使用的表单。我遇到的问题是只允许上传某些文件，并对此进行检查。如果不允许使用某个文件，则应显示一条错误消息。
这是我目前的表格：
<form method="post" id="campaignform" enctype="multipart/form-data" name="campaignform" onSubmit="return CheckForm();">
Name: <?php if(isset($empty_yourname)){ echo $empty_yourname;}?><br />
<input type="text" id="yourname" name="yourname" value="<?php if(isset($_POST['yourname'])){ echo $_POST['yourname'];}?>"><br /><br /><br />
E-mail: <?php if(isset($empty_email)){ echo $empty_email;} if(isset($invalid_email)){ echo $invalid_email;}?><br />
<input type="text" id="email" name="email" value="<?php if(isset($_POST['email'])){ echo $_POST['email'];}?>"><br /><br /><br />
Telephone: <?php if(isset($empty_telephone)){ echo $empty_telephone;}?><br />
<input type="text" id="telephone" name="telephone" value="<?php if(isset($_POST['telephone'])){ echo $_POST['telephone'];}?>"><br /><br /><br />
Description: <?php if(isset($empty_description)){ echo $empty_description;}?><br />
<textarea id="description" name="description"><?php if(isset($_POST['description'])){ echo htmlspecialchars($_POST['description']);}?></textarea><br /><br /><br />
fileupload<br />
<input type="file" id="file" name="file"><br />
<input type="file" id="file2" name="file2"><br />
<input type="file" id="file3" name="file3"><br />
<input type="file" id="file4" name="file4"><br />
<input type="file" id="file5" name="file5"><br /><br /><br />
<input type="checkbox" id="agreement" name="agreement">I accept the agreement. <?php if(isset($empty_agreement)){ echo $empty_agreement;}?><br />
<input type="submit" name="submit">
</form>
到目前为止，我已经编写了PHP（现在我只测试一个上传字段，但这应该适用于所有文件字段）：
<?php
/* on submit */
if( $_SERVER['REQUEST_METHOD'] == 'POST') {
/* check fields */
if(is_array($_POST) && empty($_POST['yourname']) OR empty($_POST['email']) OR empty($_POST['telephone']) OR empty($_POST['description']) OR empty($_POST['agreement']) OR !empty($_FILES['file']['name'])) {
if (empty($_POST['yourname'])) {
$empty_yourname = "Please enter your name.";
}
if (empty($_POST['email'])) {
$empty_email = "Please enter your e-mail adress.";
} else {
$email = $_POST["email"];
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
$invalid_email = "Invalid email format";
}
}
if (empty($_POST['telephone'])) {
$empty_telephone = "Please enter your telephone number.";
}
if (empty($_POST['description'])) {
$empty_description = "Please enter a description.";
}
if (empty($_POST['agreement'])) {
$empty_agreement = "You must accept the agreement.";
}
/* this check is not working properly */
if (!empty($_FILES['file']['name'])) {
$allowed = array('gif','png','jpg');
$filename = $_FILES['file']['name'];
$ext = pathinfo($filename, PATHINFO_EXTENSION);
if(!in_array($ext,$allowed)) {
/* Output temporary error-message */
echo 'Error';
}
}
}
/* We are successfull and post to DB */
else {
global $wpdb;
$table = wp_verk1_campaign;
$data = array(
'contributorname' => $_POST['yourname'],
'email' => $_POST['email'],
'telephone' => $_POST['telephone'],
'description' => $_POST['description'],
'date' => date('Y-m-d'),
'time' => date('H:i:s'),
'upload' => upload_user_file($_FILES['file']),
'upload2' => upload_user_file($_FILES['file2']),
'upload3' => upload_user_file($_FILES['file3']),
'upload4' => upload_user_file($_FILES['file4']),
'upload5' => upload_user_file($_FILES['file5'])
);
$format = array(
'%s',
'%s'
);
$success=$wpdb->insert( $table, $data, $format );
if($success){
echo 'data has been saved... ' ;
}
}
}
?>
我怎样才能做到这一点？
亲切问候Johan
这个条件是多余的，因为您无论如何都要单独进行所有这些检查。
if (is_array($_POST) && empty($_POST['yourname']) OR empty($_POST['email']) OR empty($_POST['telephone']) OR empty($_POST['description']) OR empty($_POST['agreement']) OR ! empty($_FILES['file']['name'])) {....}
只需删除整条线和匹配的末端卷曲即可。
由于您使用if-else来确定您的数据是否有效，并且我们刚刚删除了if部分，因此我们将不得不做其他事情来确定是否可以上载您的文件。一个简单的布尔值就可以了。
/* on submit */
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$error = false;
/* check fields */
if (empty($_POST['yourname'])) {
$empty_yourname = "Please enter your name.";
$error = true;
}
if (empty($_POST['email'])) {
$empty_email = "Please enter your e-mail adress.";
$error = true;
} else {
$email = $_POST["email"];
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
$invalid_email = "Invalid email format";
$error = true;
}
}
if (empty($_POST['telephone'])) {
$empty_telephone = "Please enter your telephone number.";
$error = true;
}
if (empty($_POST['description'])) {
$empty_description = "Please enter a description.";
$error = true;
}
if (empty($_POST['agreement'])) {
$empty_agreement = "You must accept the agreement.";
$error = true;
}
/* this check is not working properly */
if (!empty($_FILES['file']['name'])) {
$allowed = array('gif', 'png', 'jpg');
$filename = $_FILES['file']['name'];
$ext = pathinfo($filename, PATHINFO_EXTENSION);
if (!in_array($ext, $allowed)) {
/* Output temporary error-message */
echo 'Error';
$error = true;
}
}
/* We are successfull and post to DB */
if(!$error){
global $wpdb;
$table = wp_verk1_campaign;
$data = array(
'contributorname' => $_POST['yourname'],
'email' => $_POST['email'],
'telephone' => $_POST['telephone'],
'description' => $_POST['description'],
'date' => date('Y-m-d'),
'time' => date('H:i:s'),
'upload' => upload_user_file($_FILES['file']),
'upload2' => upload_user_file($_FILES['file2']),
'upload3' => upload_user_file($_FILES['file3']),
'upload4' => upload_user_file($_FILES['file4']),
'upload5' => upload_user_file($_FILES['file5'])
);
$format = array(
'%s',
'%s'
);
$success = $wpdb->insert($table, $data, $format);
if ($success) {
echo 'data has been saved... ';
}
}
}