codice:
<?php
if(isset($_GET[calcola]))
{
$gd2=checkgd();
$pics=directory($folder_browser,"jpg,JPG,JPEG,jpeg,png,PNG");
$pics=ditchtn($pics,"tn_");
}
if ($pics[0]!=""){
foreach ($pics as $p)
{
createthumb($folder_browser."/".$p,$folder_browser."/tn_".$p,$h_dimension_thumb,$w_dimension_thumb);
}
}
/*
Function checkgd()
checks the version of gd, and returns "yes" when it's higher than 2
*/
function checkgd(){
$gd2="";
ob_start();
phpinfo(8);
$phpinfo=ob_get_contents();
ob_end_clean();
$phpinfo=strip_tags($phpinfo);
$phpinfo=stristr($phpinfo,"gd version");
$phpinfo=stristr($phpinfo,"version");
$end=strpos($phpinfo," ");
$phpinfo=substr($phpinfo,0,$end);
$phpinfo=substr($phpinfo,7);
if (preg_match("/2./",$phpinfo)){$gd2="yes";}
return $gd2;
}
/*
Function ditchtn($arr,$thumbname)
filters out thumbnails
*/
function ditchtn($arr,$thumbname){
foreach ($arr as $item){
if (!preg_match("/^".$thumbname."/",$item))
{
$tmparr[]=$item;
}
}
return $tmparr;
}
/*
Function createthumb($name,$filename,$new_w,$new_h)
creates a resized image
variables:
$name Original filename
$filename Filename of the resized image
$new_w width of resized image
$new_h height of resized image
*/
function createthumb($name,$filename,$new_w,$new_h){
set_time_limit(20*60);
global $gd2;
global $w_sfondo;
global $h_sfondo;
$system=explode(".",$name);
if (preg_match("/jpg|jpeg|JPG|JPEG/",$system[1])){$src_img=imagecreatefromjpeg($name);}
else if (preg_match("/png|PNG/",$system[1])){$src_img=imagecreatefrompng($name);}
else return false;
$old_x = imageSX($src_img) or die ("Si sono verificati degli errori nella generazione con ".$src_img);
$old_y = imageSY($src_img) or die ("Si sono verificati degli errori nella generazione con ".$src_img);
if ($old_x > $old_y) {
$thumb_w=$new_w;
$thumb_h=$old_y*($new_h/$old_x);
}
if ($old_x < $old_y) {
$thumb_w=$old_x*($new_w/$old_y);
$thumb_h=$new_h;
}
if ($old_x == $old_y) {
$thumb_w=$new_w;
$thumb_h=$new_h;
}
if ($gd2=="")
{
$TW = ($w_sfondo - $thumb_w)/2;
$TH = ($h_sfondo - $thumb_h)/2;
$BW = 0;
$BH = 0;
$dst_img=ImageCreate($thumb_w,$thumb_h);
imagecopyresized($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y);
$sfn_img = ImageCreate($w_sfondo,$h_sfondo);
$white = imagecolorallocate ($sfn_img, 255, 255, 255);
imagefill($sfn_img, 0, 0, $white);
imagecopymerge($sfn_img,$dst_img,$TW,$TH,$HW,$BH,$thumb_w,$thumb_h,100);
}
else
{
$dst_img = ImageCreateTrueColor($thumb_w,$thumb_h);
imagecopyresampled($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y);
/*immagine di sfondo*/
$sfn_img = ImageCreate($w_sfondo,$h_sfondo);
$white = imagecolorallocate ($sfn_img, 255, 255, 255);
imagefill($sfn_img, 0, 0, $white);
imagecopymerge($sfn_img,$dst_img,$TW,$TH,$HW,$BH,$thumb_w,$thumb_h,100);
}
if (preg_match("/png/",$system[1]))
{
imagepng($sfn_img,$filename);
}
else
{
imagejpeg($sfn_img,$filename);
}
imagedestroy($sfn_img);
imagedestroy($dst_img);
imagedestroy($src_img);
return true;
}
/*
Function directory($directory,$filters)
reads the content of $directory, takes the files that apply to $filter
and returns an array of the filenames.
You can specify which files to read, for example
$files = directory(".","jpg,gif");
gets all jpg and gif files in this directory.
$files = directory(".","all");
gets all files.
*/
function directory($dir,$filters){
$handle=opendir($dir);
$files=array();
if ($filters == "all"){while(($file = readdir($handle))!==false){$files[] = $file;}}
if ($filters != "all"){
$filters=explode(",",$filters);
while (($file = readdir($handle))!==false)
{
for ($f=0;$f<sizeof($filters);$f++):
{
$system=explode(".",$file);
if ($system[1] == $filters[$f])
{
$files[] = $file;
}
}
endfor;
}
}
closedir($handle);
return $files;
}
?>
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