我是 PHP 新手，正在尝试创建一个包含所有必需字段的表单，包括必须选择文件的表单。这是我想要实现的目标：
- 用户必须完成 4 个字段 + 上传文件
- 文件只能是特定类型+在特定大小下
- 如果用户未完成其中一项要求并单击提交，则“必填”一词会出现在空白字段旁边
- 如果所选文件不符合条件，则会出现不同的消息
- 如果用户将某些内容留空并且必须返回以填充，则数据将保留在已填写的字段中。
- 当表单提交时，信息进入数据库+进入电子邮件
我很接近但缺少一些东西。如果我选择了符合要求的文件，即使其他字段为空，表单也会提交。只要表单字段为空，其他字段就会正常运行。我错过了什么？我将不胜感激任何帮助。谢谢你。
<?php require_once('../scripts/lcoa.php'); ?>
<?php
if (isset($_GET['jobid'])) {
$jobid = $_GET['jobid'];
}
if (isset($_GET['jobtitle'])) {
$jobtitle = $_GET['jobtitle'];
}
//This is the directory where resumes will be saved
$timestamp = time();
$folder = "../careers/resumes/";
$resume = ($_FILES['resume']['name']);
$target = $folder.basename($timestamp.$_FILES['resume']['name']);
$type = ($_FILES['resume']['type']);
$extension = strtolower(substr($resume, strpos($resume, '.') + 1));
$size = ($_FILES['resume']['size']);
$max_size = 3145728;
$name = ($_POST['name']);
$email = ($_POST['email']);
$phone = ($_POST['phone']);
$jobid = ($_POST['jobid']);
$jobtitle = ($_POST['jobtitle']);
$cover = ($_POST['coverletter']);
$error=array();
if(isset($name)){
if (empty ($name)){
$error['name']="<p class='error'>Required </p>";
}
}
if(isset($email)){
if (empty ($email)){
$error['email']="<p class='error'>Required </p>";
}
}
if(isset($phone)){
if (empty ($phone)){
$error['phone']="<p class='error'>Required </p>";
}
}
if(isset($cover)){
if (empty ($cover)){
$error['coverletter']="<p class='error'>Required </p>";
}
}
//Writes the resume to the server
if (isset ($resume)) {
if (empty ($resume)){
$error['resume']="<p class='error'>Resume Required </p>";
}
if (!empty ($resume)){
if(($extension=='doc'||$extension=='docx'||$extension=='txt'||$extension=='pdf')&&($type=='application/pdf'||'application/msword'||'application/vnd.openxmlformats-officedocument.wordprocessingml.document'||'text/plain')&&$size<=$max_size) {
if(move_uploaded_file($_FILES['resume']['tmp_name'], $target)) {
//Writes the information to the database
$insertSQL = "INSERT INTO applicants (id, name, email, phone, jobid, jobtitle, coverletter, resume) VALUES ('','".$_POST['name']."','".$_POST['email']."','".$_POST['phone']."','".$_POST['jobid']."','".$_POST['jobtitle']."','".$_POST['coverletter']."','".$resume."')";
mysql_select_db($database_lcoa, $lcoa);
$Result1 = mysql_query($insertSQL, $lcoa) or die(mysql_error());
//Sends Email
$sendto = "emailaddress";
$name = nl2br($_POST['name']);
$email = nl2br($_POST['email']);
$phone = nl2br($_POST['phone']);
$jobid = nl2br($_POST['jobid']);
$jobtitle = nl2br($_POST['jobtitle']);
$cover = nl2br($_POST['coverletter']);
$subject = "Submitted Job Application";
$headers .= "Content-Type: text/html;charset=utf-8 \r\n";
$headers = "From: " . strip_tags($email) . "\r\n";
$headers .= "Reply-To: ". strip_tags($email) . "\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: text/html;charset=utf-8 \r\n";
$msg = "<html><body style='font-family:Arial,sans-serif;'>";
$msg .= "<h2 style='font-weight:bold;border-bottom:1px dotted #ccc;'>Job Application Submitted</h2>\r\n";
$msg .= "<p><strong>Applied for:</strong> ".$jobtitle."</p>\r\n";
$msg .= "<p><strong>Job ID:</strong> ".$jobid."</p>\r\n";
$msg .= "<p><strong>Applicant Name:</strong> ".$name."</p>\r\n";
$msg .= "<p><strong>Email:</strong> ".$email."</p>\r\n";
$msg .= "<p><strong>Phone:</strong> ".$phone."</p>\r\n";
$msg .= "<p><strong>Cover Letter:</strong> ".$cover."</p>\r\n";
$msg .= "<a href='http://domain.com/".$target."'>Download Resume</a>\r\n";
$msg .= "</body></html>";
if(@mail($sendto, $subject, $msg, $headers)) {
echo "";
} else {
echo "false";
}
//Tells you if its all ok
echo "<div id='confirm-app'><p>Thank you for submitting your application. Resumes submitted will be reviewed to determine qualifications that match our hiring needs.<br /><br /> If you are selected you will be contacted by a member of our recruiting team.</p><br /><br /><a href='../careers/job-postings.php'>Return to current opportunities</a></div>";
}
}
else {
//Gives and error if its not
echo "<p style='color: #6D6E71; font-family: Arial,Helvetica,sans-serif; font-size: 13px;'>We accept resumes in <strong>.doc</strong>, <strong>.docx</strong>, <strong>.pdf</strong>, or <strong>.txt</strong> formats, 3MB or less. Please <a href='javascript:history.back(-1);'>go back</a> to upload a file that meets these requirements.<br /><br />If you continue to experience errors, please report them.</p>";
die();
}
}
}
?>