A8 : iMe

New Skills

Text upload

Description

This form uploads a .txt file to the directory /upload_text/

It does this by checking for the file extention.

If it is true then the file is submitted. If false a message is displayed.

Code

```
<?php
```
```
define ("MAX_SIZE","100");
```
```
function getExtension($str){
```
```
$i = strrpos($str,".");
```
```
if (!$i) {return "";}
```
```
$l = strlen($str) - $i;
```
```
$ext = substr($str,$i+1,$l);
```
```
return $ext;}
```
```
$errors=0;
```
```
if(isset($_POST['Submit'])){
```
```
$text=$_FILES['text']['name'];
```
```
if ($text){
```

$filename = stripslashes($_FILES['text']['name']);

```
$extension = getExtension($filename);
```
```
$extension = strtolower($extension);
```
```
if (($extension != "txt")){
```

echo '<h3>Error</h3><p>Upload atempt is not an text file.</p>';

```
$errors=1;}
```
```
else{
```

$size=filesize($_FILES['text']['tmp_name']);

```
if ($size > MAX_SIZE*1024){
```

echo '<h3>Error</h3><p>File text size is too big</p>';

```
$errors=1;}
```
```
$image_name=$filename;
```
```
$newname="./upload_text/".$image_name;
```

$copied = copy($_FILES['text']['tmp_name'], $newname);

```
if (!$copied){
```

echo '<h3>Error</h3><p>Upload unsuccessfull.</p>';

```
$errors=1;}
```
```
}
```
```
}
```
```
}
```

if(isset($_POST['Submit']) && !$errors){

echo "<h3>Success</h3><p>Text uploaded successfully.</p>";}

```
?>
```

```
//Start PHP protocol
```
```
//Define maximum size in Kb
```

//Function to start file extention check

```
//Variable equals find string
```

//If variable does not equals find string return blank

//Variable equals string minus first varibale

//Variable equals subtract string from second variable

```
//Return the extention
```
```
//Variable error equals 0
```
```
//If submit button pressed
```
```
//Variable equals files text and name
```
```
//If text equals
```
```
//Variable name with no slashes
```

//Varibable equals extension of the file...

```
//...in a lowercase format
```
```
//If file is not txt
```
```
//Print message
```
```
//Add error to counter
```
```
//Otherwise
```
```
//Get file size
```
```
//If file size is bigger than 1024Kb
```
```
//Print message
```
```
//Add error to counter
```
```
//Set filename as text name
```
```
//Define upload directory
```
```
//If anything fails print error message
```
```
//If not copied
```
```
//Print message
```
```
//Add error to
```
```
//Close else
```
```
//Close if ($text)
```
```
//Close submit
```
```
//If submit and no errors
```
```
//Print message
```
```
//Close PHP protocol
```