带有附件的联系表单的 PHP 文件大小验证

Question

我已经用php制作了联系表格，并且对姓名，电子邮件和消息的验证效果很好，但是我的文件大小验证不起作用。当我尝试上传大于 2 MB 的文件时，它会加载和折叠。我已经不知道该怎么做。谁能帮我？这是我的php代码：

<?php
    if ($_POST["submit"]) {
        if (!$_POST['name']){
            $error="Unesite svoje ime.";
        }
        if (!$_POST['email']) {
            $error.="Unesite e-mail adresu.";
        }
        if (!$_POST['message']) {
            $error.="Unesite tekst poruke";
        }
        if ($_POST['email']!="" AND !filter_var($_POST['email'],FILTER_VALIDATE_EMAIL)) {
            $error.="Unesite validu e-mail adresu.";
        }
        if(!empty($_FILES['my-file']['name'])){
            $file_name = $_FILES['my-file']['name'];
            $temp_name = $_FILES['my-file']['tmp_name'];
            $file_type = $_FILES['my-file']['type'];
            if($_FILES['my-file']['size'] > 524288){
                $error.="Maksimalna velicina fajla je 5 MB.";
            } else {
            $from = $_POST['email'];
            $to = "[e-mail]";
            $subject = "Poruka sa sajta";
            $message = "Tekst poruke:".$_POST['message'];
            $file = $temp_name;
            $content = chunk_split(base64_encode(file_get_contents($file)));
            $uid = md5(uniqid(time()));
            $header = "MIME-Version: 1.0rn"; 
            $header .= "From:".$from."rn"; 
            $header .= "Reply-To: ".$_POST['email']."" . "rn";
            $header .= "Content-Type: multipart/mixed; boundary="".$uid.""rnrn";
            $header .= "This is a multi-part message in MIME format.rn";
            //plain text part
            $header .= "--".$uid."rn";
            $header .= "Content-type:text/plain; charset=iso-8859-1rn";
            $header .= "Content-Transfer-Encoding: 7bitrnrn";
            $header .= $message."rnrn";
            //attachment part
            $header .= "--".$uid."rn";
            $header .= "Content-type: ".$file_type."; name="".$file_name.""rn";
            $header .= "Content-Transfer-Encoding: base64rn";
            $header .= "Content-Disposition: attachment; filename="".$file_name.""rnrn";
            $header .= $content."rnrn";
            if ($error) {
                $result='<div class="alert alert-danger">'.$error.'</div>';
            } else {
                if (mail($to, $subject, "", $header)) {
                $result='<div class="alert alert-success"><strong>Vasa poruka je poslata!</strong></div>';} 
                else {
                $result='<div class="alert alert-danger">Došlo je do greške prilikom slanja poruke. Molim Vas pokušajte ponovo kasnije.</div>';}
    } //if there is no error
        }} else {if ($error) {
                $result='<div class="alert alert-danger">'.$error.'</div>';
            } else {
                $header = "From:".$_POST['email']."rn";
                $header = "Reply-To: ".$_POST['email']. "n" ;
                $body = "Tekst poruke:".$_POST['message'];
                if (mail('[e-mail]', 'Poruka sa sajta', $body, $header)) {
                $result='<div class="alert alert-success"><strong>Vasa poruka je poslata!</strong></div>';} 
                else {
                $result='<div class="alert alert-danger">Došlo je do greške prilikom slanja poruke. Molim Vas pokušajte ponovo kasnije.</div>';}
    }}//if files not empty
    } //if is submited
?>

和我的HTML代码：

<div class="col-md-6 emailForm">
    <?php echo $result; ?>
    <form id="contact_body" method="post" action="index.php" enctype="multipart/form-data">
        <div class="form-group">
            <label for="name">Ime i prezime:</label>
            <input type="text" name="name" class="form-control" placeholder="Ime i prezime" data-required="true"/>
        </div>
        <div class="form-group">
            <label for="email">E-mail:</label>
            <input type="text" name="email" class="form-control" placeholder="E-mail" data-required="true"/>
        </div>
        <div class="form-group">
            <label for="comment">Poruka:</label>
            <textarea class="form-control" name="message" data-required="true"></textarea>
        </div>
        <div class="form-group">
            <label class="btn btn-primary">
                <input type="file" name="my-file" style="display:none;" onchange="$('#upload-file-info').html(this.files[0].name);">
                    Dodajte sliku
            </label>
            <span class='label label-info' id="upload-file-info"></span>
        </div>
        <div id="push" class="pushbutton"></div>
        <input type="submit" name="submit" class="btn btn-lg" value="Poslati"/>         
    </form>
</div>

Answer 1

您可能会收到错误 - 因为您为 php 上传设置设置设置了较低的值：

;上传文件允许的最大大小。

upload_max_filesize = 40M

;必须大于或等于upload_max_filesize

post_max_size = 40M

如果达到此限制 - 文件未上传且 $_FILES[..][错误]！=0。

第二个 - 524288不是 5MB，而是只有 524kB

Answer 2

添加一个零

if($_FILES['my-file']['size'] > 5242880)