当尝试使用PHP imgpng将图像输出到浏览器时，我得到了一个破碎的图像

Question

This is the code that presents the form which will pass on the uploaded picture to the process_image.php:

This form allows you to upload a file to the server.<br>
    <form enctype="multipart/form-data" action="process_file.php" method="POST"><br>
     Type (or select) Filename: <input type="file" name="uploadFile"><br>
    <input type="submit" value="Upload File">
</form>

and this is the php that is supposed to process that image and show it:

<?php

    header( "Content-Type: image/png" );
    $im = imagecreatefrompng($_FILES["uploadFile"]["tmp_name"]);
    imagepng($im);

?>

However when I run this all I get on the second page is a broken image.

Answer 1

Try use echo var_dump($_FILES) and see if all the data is there and that there is no error message.