Question

I am getting an error stating that fileImage is an undefined index on this line: $idx = count($_POST [‘fileImage’]) -1 ;. Now this is happening because when user opens up the page, then obviously nothing is posted to fileImage, so how can I set it to “”, when nothing is posted to the $_POST? I thought I did it in the line below but it doesn’t seem that is happening.

Below is the code:

<?php
session_start();

$idx = count($_POST ['fileImage']) -1 ;
$output = isset($_POST ['fileImage'][$idx]) ? $_POST ['fileImage'][$idx]['name'] : "";

?>

Javascript:

function stopImageUpload(success) {

    var imageNameArray = ['<?php echo $output ?>'];
    var result = '';

    if (success == 1) {
        result = '<span class="msg">The file was uploaded successfully!</span><br/><br/>';
        for (var i = 0; i < imageNameArray.length; i++) {
            $('.listImage').append(imageNameArray[i] + '<br/>');
        }
    }
    else {
        result = '<span class="emsg">There was an error during file upload!</span><br/><br/>';
    }

    return true;
}​

Below is the php script where it uploads a file which is on another page from the javascript function above:

        <?php

            session_start();

            $result = 0;
            $errors = array ();
            $dirImage = "ImageFiles/";


        if (isset ( $_FILES ['fileImage'] ) && $_FILES ["fileImage"] ["error"] == UPLOAD_ERR_OK) {

        $fileName = $_FILES ['fileImage'] ['name'];

        $fileExt = pathinfo ( $fileName, PATHINFO_EXTENSION );
        $fileExt = strtolower ( $fileExt );


        $fileDst = $dirImage . DIRECTORY_SEPARATOR . $fileName;

                if (count ( $errors ) == 0) {
                    if (move_uploaded_file ( $fileTemp, $fileDst )) {
                        $result = 1;


                    }
                }

            }

    $_POST ['fileImage'][] = array('name' => $_FILES ['fileImage']['name']);

            ?>

        <script language="javascript" type="text/javascript">window.top.stopImageUpload(<?php echo $result;?>);</script>

Answer 1

I don’t see where you are checking for that but the way to do it is:

if(!isset($_POST['fileImage'))
      // Don't do something with the image
else
      // Totally do it