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  1. PO
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    <p>This code generates a thumbnails gallery with clickable thumbs. It creates semi-transparent png images. It has been the ONLY CODE THAT I HAVE FOUND THAT WORKS. Maybe of some use to anyone interested.</p> <pre><code>&lt;?php $ak = "&lt;!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\"&gt;"; $ak .= "&lt;html&gt;&lt;head&gt;"; $ak .= "&lt;/head&gt;"; echo $ak; $Gal = "GALLERY # 1"; //title $thumb = "thumbs"; //thumbs directory name $thumbwidth = 250; $imagequality = 100; $cols = 3; //number of columns $vi = "Click for a larger image."; $sname = "index.php"; //name of this file $isz = "Size"; //text for "Size" $msgcp = "Image"; //text for "Image" $msgof = "of"; //text for "of" if (isset($_GET['iid'])) { $_GET['iid']; } elseif (isset($_POST['iid'])) { $_POST['iid']; } $files = array(); if ($handle = opendir('.')) { while (false !== ($file = readdir($handle))) { if ($file != "." &amp;&amp; $file != "..") { $jpg = ".jpg"; if (preg_match('/.jpg/', $file) || preg_match('/.gif/', $file) || preg_match('/.png/', $file)){ $files[] = $file; } } } closedir($handle); } sort($files); if (!is_dir($thumb)) { mkdir($thumb, 0755); } $i = 0; $th = array(); $iw = array(); $ih = array(); $ifs = array(); foreach ($files as $image) { $thumbimage = $thumb."/".$image; $thumb_exists = file_exists($thumbimage); $size = GetImageSize($image); $width = $size[0]; $height = $size[1]; $type = $size[2]; if (!$thumb_exists) { set_time_limit(30); switch ($type) { case 1 : $im = ImageCreateFromGIF($image); break; case 2 : $im = ImageCreateFromJPEG($image); break; case 3 : $im = ImageCreateFromPNG($image); break; } $newwidth = $thumbwidth; $newheight = ($newwidth / $width) * $height; $im2 = ImageCreateTrueColor($newwidth,$newheight); imagesavealpha($im2, true); $trans_colour = imagecolorallocatealpha($im2, 0, 0, 0, 127); imagefill($im2, 0, 0, $trans_colour); ImageCopyResampled($im2,$im,0,0,0,0,$newwidth,$newheight,$width,$height); switch ($type) { case 1: ImageGIF($im2, $thumbimage); break; case 2: ImageJpeg($im2, $thumbimage, $imagequality); break; case 3: ImagePNG($im2, $thumbimage); break; imagedestroy($im); imagedestroy($im2); } } $th[$i] = $thumbimage; $iw[$i] = $width; $ih[$i] = $height; $ifs[$i] = round((@filesize($image)/1024), 1); $i++; } echo "&lt;table border=\"0\" cellspacing=\"3\" cellpadding=\"3\"&gt;"; echo "&lt;tr&gt;&lt;td&gt;$Gal&lt;/td&gt;&lt;/tr&gt;&lt;br&gt;"; echo "&lt;/table&gt;"; if (!isset($iid)) { $rows = round(count($th)/$cols); if (($rows * $cols) &lt; (count($th))) { $rows++; } echo "&lt;table border=\"0\" cellspacing=\"3\" cellpadding=\"3\"&gt;"; echo "&lt;tr&gt;&lt;td&gt;&lt;/td&gt;&lt;/tr&gt;&lt;br&gt;"; echo "&lt;tr&gt;&lt;td&gt;Click on the thumbnail for a larger image.&lt;/td&gt;&lt;/tr&gt;&lt;br&gt;"; echo "&lt;/table&gt;"; echo "&lt;center&gt;&lt;table border=\"0\" cellspacing=\"3\" cellpadding=\"3\"&gt;"; for ($i = 1; $i &lt;= $rows; $i++) { echo "&lt;tr&gt;"; for ($j = 1; $j &lt;= $cols; $j++) { $td = (($i - 1) * $cols) + $j; $iu = ($td - 1); if (isset($th[$iu])) { $filebodyname = split("[/\\.]", $files[$iu]) ; $n = count($filebodyname)-2; $filebodyname = $filebodyname[$n]; $op = ""; $op .= "&lt;td align=\"center\" valign=\"bottom\"&gt;\n&lt;br&gt;\n"; $op .= "&lt;a title=\"$vi\" href=\"$sname?iid=$iu\" target=\"_blank\" &gt;\n"; $op .= "&lt;img src=\"$th[$iu]\" border=\"0\"&gt;&lt;/a&gt;\n"; $op .= "&lt;br&gt;&lt;a title=\"$vi\" href=\"$sname?iid=$iu\" target=\"_blank\" &gt;$filebodyname&lt;/a&gt;&lt;br&gt;\n"; $op .= "$vi\n"; $op .= "&lt;/td&gt;\n"; echo $op; } } echo "&lt;/tr&gt;\n"; } } else { $filebodyname = split("[/\\.]", $files[$iid]) ; $n = count($filebodyname)-2; $filebodyname = $filebodyname[$n]; $iid2 = $iid+1; $tot = count($th); $op = ""; $op .= "&lt;center&gt;&lt;table border=\"0\" cellspacing=\"3\" cellpadding=\"3\"&gt;"; $op .= "&lt;tr&gt;\n&lt;td align=\"center\"valign=\"top\"&gt;\n$msgcp $iid2 $msgof $tot &lt;/td&gt;\n&lt;/tr&gt;\n&lt;tr&gt;\n"; $op .= "&lt;td align=\"center\"&gt;\n&lt;br&gt;\n"; $op .= "&lt;img src=\"$files[$iid]\" border=\"0\"&gt;\n"; $op .= "&lt;br&gt;$filebodyname\n"; $op .= "&lt;br&gt;\n&lt;/td&gt;\n&lt;/tr&gt;\n"; echo $op; echo "&lt;/table&gt;&lt;/center&gt;"; } echo "&lt;/table&gt;&lt;/center&gt;"; echo "&lt;/body&gt;&lt;/html&gt;"; ?&gt; </code></pre>
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    1. POHow to generate semi transparent shapes in php using gdlib
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