Upload script in php [duplicate] - php

Question

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Closed 10 years ago.
Possible Duplicate:
Unable to do File Upload in PHP
I am trying to learn to write file upload script in PHP. I don't know why this doesn't work. Please have a look
<?php
$name=$_FILES["file"]["name"];
if(isset($name)) {
if(!empty($name)) {
echo $name;
}
else {
echo 'Please choose a file';
}
}
?>
It gives an error message Notice: Undefined index: file in
The html part is
<form action="submissions.php" method="POST" enctype="multipart/form-data">
<input type="file" name="file" id="file" />
<input type="submit" name="submit" value="Submit" /></form>
I am using wamp on Windows. What may be the cause for the error ?

Answer 1

You need to check if the form was submitted before executing your PHP code:
<?php
if (isset($_POST["submit"]) && $_POST["submit"] === "Submit") {
if (isset($_FILES["file"]["name"])) {
$name = $_FILES["file"]["name"];
if(!empty($name)) {
echo $name;
}
else {
echo 'Please choose a file';
}
}
}
?>

Answer 2

The clue is in the error message. The index 'file' doesn't exist in the FILES array. At a guess because you have this code before you've sumitted the form?

Answer 3

check if it exists first,
if(isset($_FILES['FormFieldNameForFile']) && $_FILES['FormFieldNameForFile']['size']>0){ # will be 0 if no file uploaded
then check your use of the field components.
$_FILES['userfile']['name'] # The original name of the file on the client machine.
$_FILES['userfile']['type'] # The mime type of the file, if the browser provided this information. An example would be "image/gif". This mime type is however not checked on the PHP side and therefore don't take its value for granted.
$_FILES['userfile']['size'] # The size, in bytes, of the uploaded file.
$_FILES['userfile']['tmp_name'] # The temporary filename of the file in which the uploaded file was stored on the server.
$_FILES['userfile']['error'] # The error code associated with this file upload