01-30-2008, 10:32 PM
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#1 (permalink)
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The Acquainted
Join Date: Jan 2008
Posts: 136
Thanks: 4
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How to improve my Upload Function?
Hey,
I finally delved into functions (maybe OOP?) to produce a really simple image upload system. I have the following, which works, but is there anywhere I can improve on? Id est syntax and expressions but NOT features, please? :)
INDEX.PHP
PHP Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1">
<meta name="author" content="Gareth Price">
<title>Upload It!</title>
<style>
body {
width: 500px;
margin: 0 auto;
font:11px Tahoma, Arial, Helvetica, sans-serif;
color:#666666;
}
</style>
</head>
<body>
<h1>Upload It!</h1>
<?php
require('uploadit.class.php'); // require class
$upload = new sui; // set variable
echo $upload->uploadform("uploads/"); // initiate upload form
?>
</body>
</html>
UPLOADIT.CLASS.PHP
PHP Code:
<?php
class sui{ // initiates class called uploader
public $path = "http://localhost/uploadit/uploads/"; // the FULL path to the upload directory, must include trailing slash
//********************************************************************************
**********************************************//
function uploadfile($filename, $filesize, $filewidth, $fileheight, $fileext, $tmpname, $dir, $max_height, $max_width, $max_size){
$allowed = array("jpg","png","gif"); // allowed file types
// SET OTHER CONFIGS @ ~line 80
if(!in_array($fileext,$allowed)){ // if the file extension in the array is NOT allowed ...
echo "File type not supported: $fileext"; // echo out error message and display the extension which is not allowed
}
else{
if($filewidth>$max_width){ // is the file too wide?
echo "Image width is over the limit"; // echo out error message
}
elseif($fileheight>$max_height){ // is the file too high?
echo "Image height is over the limit"; // echo out error message
}
else{
if($filesize>$max_size){ // is the file too big?
echo "Image size is over the limit"; // echo out error message
}
else{ // no errors to display.... move onto displaying links
$rand = rand(1000,100000); // we are now creating a random name
$newfilename = urlencode($filename);
$newname = $rand."_".$newfilename; // we add a random number, place an underscore, and add the original file name (you can change this)
$bb = $this->path.$rand."_".$newfilename; // setting $bb to the path AND the new file name put together.
$html = "<img src=$bb alt=\"YourSite\" />"; // display the html for below
if(copy($tmpname, $dir.$newname)){ // if the copying of the image to the directory is succesful...
// display the following (you can add more links here, eg thumbnails?)...
echo "
<p><a href=\"$bb\"><img src=\"$bb\" border=\"0\" width=\"100\" height=\"100\" /></a></p>
<p><strong>Direct Link</strong> <br />
<input type=\"text\" size=\"70\" value=\"$bb\" /></p>
<p><strong>BBCode</strong><br />
<input type=\"text\" size=\"70\" value=\"[img]".$bb."[/img]\" /></p>
<p><strong>HTML</strong><br />
<input type=text size=70 value='$html' /></p>
<a href=\"index.php\">Upload again!</a>
";}
else{ // if the copying of image is UNsuccesful...
echo "The copy was not successful"; // echo out error message
}
}
}
}
} // closing open brackets and function.
//********************************************************************************
**********************************************//
function uploadform($directory){ // initiates upload form
if(isset($_POST['upload'])){ // has the user pressed submit? MUST equal the name in form below
if(!is_dir($directory)){ // does the directory exist?
echo "Sorry, $directory was not found on the server.";
}
else{
$img_max_height = "10000"; // configurable settings follow... (in pixels and bytes)
$img_max_width = "10000";
$img_max_size = "800000";
$image_name = addslashes($_FILES['file']['name']);
$image_size = $_FILES['file']['size'];
$image_dimensions = getimagesize($_FILES['file']['tmp_name']);
$image_width = $image_dimensions[0];
$image_height = $image_dimensions[1];
$image_extention = explode(".",$image_name);
$extention = strtolower($image_extention[count($image_extention)-1]);
$image_tmp_name = $_FILES['file']['tmp_name'];
$this->uploadfile($image_name,$image_size,$image_width,$image_height,$extention, $image_tmp_name, $directory, $img_max_height, $img_max_width, $img_max_size);
} // using the first function, uploadfile, we set the different configs and try to upload the file.
}
else{ // if the user has NOT pressed submit show the form for them to do so!
return "
<form enctype=\"multipart/form-data\" method=\"post\" action=\"$_SERVER[PHP_SELF]\">
<input type=\"file\" class=\"file\" name=\"file\" />
<input type=\"submit\" name=\"upload\" value=\"Upload\" id=\"submit\" />
</form>";
}
} // closing open brackets and function.
//********************************************************************************
**********************************************//
} // closing class.
?>
Thanks for any help :)
Gareth |
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