PHP Warning: POST Content-Length exceeds the limit

Question

I have a simple contact form with file upload. I got the following warning, but I would like to make an error message for the users that this file is bigger than the limit. Yes I know i can disable the "Warning: POST Content-Length..." message if I switch off error_reporting, but I would warn the users. One more problem appeared when I fill the contact form and try to upload bigger file I press submit and all my filled fileds will be empty. Is it any kind of way to get the error message and don't lose the filled fields?

Answer 1

You could do that in Javascript first so that even before the File could hit the Server, Javascript would alert/inform the User that the file Size is more than the Maximum Allowed Size. Here below is an example, which you may well test out and fiddle with first here .

    <html>
    <head></head>
    <body>
    <input type="file" id="file_upload_1" name='file_upload_1' class="file_upload"/>
    <!-- AND THEN, OTHER INPUT FORM FIELDS FOLLOW -->

    <script type="text/javascript" src="jquery.js"></script>
    <script type="text/javascript">
        (function($) {
            $(document).ready(function(){
                var fileInput       = $("#file_upload_1");
                var MaxAllowedSize  = 2000; // 2KB
                var sizeKMGB        = "2KB";

                fileInput.on("change", function(evt){
                    var objFile     = $(this);
                    var fileSize    = document.getElementById("file_upload_1").files[0].size;
                    console.log(fileSize);
                    if(fileSize > MaxAllowedSize){
                        // RESET THE UPLOAD TO NOTHING... SO USER CAN UPLOAD AGAIN...
                        var fSize   =  parseFloat(fileSize/1000).toFixed(2);
                        var sUnit   = fSize + "KB";
                        if(fSize >= 100){
                            fSize   = parseFloat( fileSize/(1000*1000)).toFixed(2);
                            sUnit   = fSize + "MB";
                        }
                        objFile.val(null);
                        alert("Upload File-size Must not exceed " + sizeKMGB + ". \nYou tried to upload a File with about " + sUnit + ".")
                    }
                });
            });
        })(jQuery);
    </script>

    </body>
    </html>

Answer 2

What I've done is built an ajax script to check the maximum file size. Thus we can warn users before they upload a large file. Much nicer experience than having the upload fail.

First, the javascript (the example uses jQuery, but that's by no means necessary):

var max_size = // Insert ajax code to fetch max size *in bytes* from server here.
$('form input[type="file"]').each(function() {
    if ((typeof this.files != 'undefined') && this.files.length) {
        total_size += this.files[0].size;
    }
});
if (max_size < total_size) {
    var warning = 'Maximum file size is ' + max_size + ' bytes';
    return;
}

On the server side, the maximum upload size is determined by the smallest of these three values:

function max_size() {
    return Size::smallest(
        Size::str_to_bytes(ini_get('post_max_size')),
        Size::str_to_bytes(ini_get('memory_limit')),
        Size::str_to_bytes(ini_get('upload_max_filesize'))
    );
}

Writing the str_to_bytes and smallest functions is left as an exercise for the reader.

PHP Warning: POST Content-Length exceeds the limit

Question

2 answers

solution1
1 ACCPTED 2016-07-21 14:34:25

solution2
-2 2016-07-21 14:13:20

PHP Warning: POST Content-Length exceeds the limit

Question

2 answers

solution1 1 ACCPTED 2016-07-21 14:34:25

solution2 -2 2016-07-21 14:13:20

solution1
1 ACCPTED 2016-07-21 14:34:25

solution2
-2 2016-07-21 14:13:20