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Lesson 11PHP file upload.

File upload to server computer is a very task to do in PHP to see how it happens lets see a example.


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>File upload using PHP</title>
</head>
<?php
if(isset($_POST['submit']))
{
     if(isset($_FILES['upload']['name']))
{
    echo "<b>Attributes of file upload:</b><br/>";
echo "<b>File name:</b>" .$_FILES['upload']['name'];
echo "<br/><b>File type:</b>" .$_FILES['upload']['type'];
echo "<br/><b>File Size:</b>" .$_FILES['upload']['size']."bytes";
echo "<br/><b>File Temp:</b>" .$_FILES['upload']['tmp_name'];
echo "<br/><b>File error:</b>" .$_FILES['upload']['error'];

$path1 = $_FILES['upload']['tmp_name'];
$path2 = "uploaded_files/".$_FILES['upload']['name'];
if($_FILES['upload']['type']=="image/pjpeg" || $_FILES['upload']['type']=="image/gif" || $_FILES['upload']['type']=="text/plain" || $_FILES['upload']['type']=="application/x-php"  || $_FILES['upload']['type']=="application/msword")
{
move_uploaded_file($path1,$path2);
echo "<br/>file uploaded to server.";
}
else
echo "<br/><b>select only jpeg,gif,text or  php files to upload.</b>";
}
else
echo "No file choosed.";

}

?>
<body>
<form name="form" method="post"  action="<?php echo $_SERVER['PHP_SELF'];?>" enctype="multipart/form-data">
<h1>File upload using PHP</h1>
<center>
<table>
<tr>
<td>Choose file</td><td><input type="file" name="upload"  /></td>
</tr>

<tr><td>&nbsp;</td><td><input type="submit" name="submit" value="upload"  /></td></tr>
</table>

</center>
</form>
</body>
</html>
 1.Where uploaded file folder created at the server holds the user uploaded files.
2.To upload a file the HTML input type must be "file"
3. form enctype="multipart/form-data" must be set that shows that form data must be send as MIME file encoded as binary file.
4. Uploaded file parameters  should use $_FILE global array  to retrieve different file abstract
5. There are five different parameters associated with it. these are ,
    file name
   file type
  file size
 file tmp_name which is temporary storage of file uploaded to server.
file error.

what we to do simply move our file from temporary storage to path  specified by the developer.

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