Archive for February, 2007

Create watermark on the Fly

February 26, 2007 at 3:50 am · Filed under Dynamic Web Development, PHP, tutorial

I come to office earlier now. At a momment i just read my schedule of what will i do for today…? Let me see. ooh God, I have job to create a script which can protect all photo in my project using Logo, and i guess that i have to create watermark script.

However, it’s very interisting to create it. OK let’s create it…!!! (And don’t forget to help me if i’m wrong.. ). And this is the code which i used in my script:


<?php
/*create watermark
*By Gunturris - gunturris#a.t#gmail.com
*End of Feb 2007
*$imagesorce is original image
*$imagelogo is logo to blending (I used PNG)
*$alpha is alpha color output for watermark */


function watermak_on_the_fly($imagesource, $imagelogo, $alpha=15 ){
header("content-type: image/png");
//Check image resourse
if(! file_exists($imagesource)){
$im = @imagecreate(50, 150)
or die("Cannot Initialize new GD image stream");
$background_color = imagecolorallocate($im, 255, 255, 255);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5, "Img not found", $text_color);
imagepng($im);
return imagedestroy($im);
}

//Check watermark logo
if(! file_exists($imagelogo)){
$im = @imagecreate(50, 150)
or die("Cannot Initialize new GD image stream");
$background_color = imagecolorallocate($im, 255, 255, 255);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5, "Logo not found", $text_color);
imagepng($im);
return imagedestroy($im);
}

settype($alpha,"integer");
if($alpha > 100) $alpha=100;
if($alpha < 0 )$alpha = 0;

list($ori_width,$ori_height,$ori_type,$ori_attr)=getimagesize($imagesource);
switch($type){
case 1 : $img = @imagecreatefromgif($imagesource);break; //GIF
case 2 : $img = @imagecreatefromjpeg($imagesource); break; //JPG
case 3 : $img = @imagecreatefrompng($imagesource); break; //PNG
default : die("IMAGE NOT SUPPORTED!"); break;
}

$watermark = imagecreatefrompng( $imagelogo );
$watermark_width = imagesx($watermark);
$watermark_height = imagesy($watermark);

@imagecopymerge($img, $watermark, 0, ($ori_height-$watermark_height-5), 0, 0, $watermark_width, $watermark_height, $alpha);

return $img;

}
?>

And to use just ‘do’ like this:

<?php
$test = watermak_on_the_fly("imagejpeg.jpeg", "logo.png",25);
@imagejpeg($test );
@imagedestroy($test);
?>
OK, I hope it’s works good, if not please tell me or please debug by your self. Cos in my computer is no problem :p

Comments (3)

Force-download use PHP

February 22, 2007 at 3:41 am · Filed under PHP, tutorial

Wuih..
There’s long time for me do not write any to here.
It’s cause my job deadline.. hehehe…

Anyway, Now, I want to write about force-download on PHP.
Why i write this? Yeah, i just feel that this technique was good for share private download file(s), cos many my friend ask me if they add file in public_html it is not secure, and not private.

So please do like this:

/home/project/public_html/ //<<< this path for world
/home/project/content/ //<<< this for private share file

And every file will download is from private and if want to download must login 1st, and script will like this.

<?php
define("DOWNLOAD_PATH","/home/project/content/"); // location to download
class loginToDownload{

var $username = "guntur"; //User can get from DB
var $password = "test"; //Password can get from DB
var $file_to_download = "test.txt";

function authen($user,$pass,$filename){
if($user == $this->username and $pass == $this->password ){
//Get file
$filephysics = DOWNLOAD_PATH.$filename;
if( $this->download($filephysics) ) return true; //success download
}

return false; //failed to download
}

function download($fname){
if(! file_exists($fname) ) return false; //Checkin' file
$filesize = filesize($fname);
$filemimetype = mime_content_type($fname);
$exten = end( explode($fname,".") );

header('Content-type: '. $filemimetype );
header('Content-Disposition: inline ; filename="doload.'. $exten . '" ');
print(file_get_contents($fname));
exit;
}
}//end class
?>

And please try, and report if wrong, cos i don’t test it :D
OK, bro, have nice try…

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CakePHP vs Symfony, hmm..???

February 22, 2007 at 2:56 am · Filed under AJAX, Dynamic Web Development, PHP

After i found a PHP framework who is called cakePHP, now i heard about the other ones framework which it’s name Symfony PHP5.

So what is different between both of its …? I don’t know much, but i can see several difference from its.

  • Installation, server requirement phpCake use PHP 4.3 or greater, and Symfony must use 5
  • Database, Symfony compatible with most engine like MySQL, Ms SQL, PostgreSQL and Oracle, but i don’t see cakePHP can use Oracle engine.
  • Models, Symfony has two versions of the data object model in two different directories and not for cakePHP
  • Propel XML, Symfony understands the Propel native XML schema format and i don’t think so on cakePHP

There is a several which i think difference from both, and i need your suggestion, input or addition to complete this article. And please correct if on above is wrong.

Comments (2)