Archive for 'gestione immagini'
Manipolazioni delle immagini in PHP
Posted on 01. Sep, 2009 by daniele.
SCALA GRIGI
//to black and white if(!file_exists('dw-bw.png')) { $img = imagecreatefrompng('dw-manipulate-me.png'); imagefilter($img,IMG_FILTER_GRAYSCALE); imagepng($img,'db-bw.png'); imagedestroy($img); }
NEGATIVO
//to negative if(!file_exists('dw-negative.png')) { $img = imagecreatefrompng('dw-manipulate-me.png'); imagefilter($img,IMG_FILTER_NEGATE); imagepng($img,'db-negative.png'); imagedestroy($img); }
COLOR SEPPIA
//to black and white if(!file_exists('dw-sepia.png')) { $img = imagecreatefrompng('dw-manipulate-me.png'); imagefilter($img,IMG_FILTER_GRAYSCALE); imagefilter($img,IMG_FILTER_COLORIZE,100,50,0); imagepng($img,'db-sepia.png'); imagedestroy($img); }
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Un facilissimo Resize delle immagini al volo!
Posted on 26. Jul, 2009 by daniele.
< ?php $imageSrc = (string)$_GET['image']; $width = $_GET['width']; if (is_numeric($width) && isset($imageSrc)){ header('Content-type: image/jpeg'); makeThumb($imageSrc, $width); } function makeThumb($src,$newWidth) { $srcImage = imagecreatefromjpeg($src); $width = imagesx($srcImage); $height = imagesy($srcImage); $newHeight = floor($height*($newWidth/$width)); $newImage = imagecreatetruecolor($newWidth,$newHeight); imagecopyresized($newImage,$srcImage,0,0,0,0,$newWidth,$newHeight,$width,$height); imagejpeg($newImage); } ?>
Utilizzo:
<img src=”thumbnail.php?image=thumbnail.jpg&width=100” />
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Script PHP per la gestione online dei files!
Posted on 16. Jul, 2009 by daniele.
Codice Sorgente: http://nettuts.s3.amazonaws.com/381_onlineStorage/SOURCE.zip
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Script php per creare immagini thumbnail
Posted on 03. Jan, 2009 by Administrator.
function create_img_gd($imgfile, $imgthumb, $newwidth) {
if (function_exists("imagecreate")) {
$imginfo = getimagesize($imgfile);
switch($imginfo[2]) {
case 1:
$type = IMG_GIF;
break;
case 2:
$type = IMG_JPG;
break;
case 3:
$type = IMG_PNG;
break;
case 4:
$type = IMG_WBMP;
break;
default:
return $imgfile;
break;
}
switch($type) {
case IMG_GIF:
if (!function_exists("imagecreatefromgif")) return $imgfile;
$srcImage = imagecreatefromgif("$imgfile");
break;
case IMG_JPG:
if (!function_exists("imagecreatefromjpeg")) return $imgfile;
$srcImage = imagecreatefromjpeg($imgfile);
break;
case IMG_PNG:
if(!function_exists("imagecreatefrompng")) return $imgfile;
$srcImage = imagecreatefrompng("$imgfile");
break;
case IMG_WBMP:
if (!function_exists("imagecreatefromwbmp")) return $imgfile;
$srcImage = imagecreatefromwbmp("$imgfile");
break;
default:
return $imgfile;
}
if ($srcImage){
$srcWidth = $imginfo[0];
$srcHeight = $imginfo[1];
$ratioWidth = $srcWidth / $newwidth;
$destWidth = $newwidth;
$destHeight = $srcHeight / $ratioWidth;
$destImage = imagecreatetruecolor($destWidth, $destHeight);
imagealphablending($destImage, true);
imagealphablending($srcImage, false);
imagecopyresized($destImage, $srcImage, 0, 0, 0, 0, $destWidth, $destHeight, $srcWidth, $srcHeight);
switch($type) {
case IMG_GIF:
imagegif($destImage, "$imgthumb");
break;
case IMG_JPG:
imagejpeg($destImage, "$imgthumb");
break;
case IMG_PNG:
imagepng($destImage, "$imgthumb");
break;
case IMG_WBMP:
imagewbmp($destImage, "$imgthumb");
break;
}
imagedestroy($srcImage);
imagedestroy($destImage);
return $imgthumb;
} else {
return $imgfile;
}
} else {
return $imgfile;
}
}
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Ridurre la dimensione delle immagini con smart image resizer
Posted on 09. Mar, 2008 by Administrator.

smart image resizer è uno script php che ti permette di ridurre al volo la dimensione delle immagini jpg.
Sito web: http://shiftingpixel.com/2008/03/03/smart-image-resizer/
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Easy PHP Reflections, immagini riflesse con php
Posted on 01. Jan, 2008 by Administrator.

Sito web: http://reflection.corephp.co.uk/
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aPop – AJAX Image Gallery
Posted on 24. Nov, 2007 by Administrator.
aPop è uno script per la gestione di una galleria di immagini in AJAX, PHP e MYSQL
Sito web: http://www.maxkiesler.com/apop/


