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Thread starter kpdvx
Start date Jun 4, 2002

Status: Not open for further replies.

Jun 4, 2002

#1

kpdvx

Programmer

anyone know of a good script that will take images in a directory and auto thumbnail them, along with next, prev links? i had a really good script before... but i have since lost it. Nothing fancy, no mysql, just something that takes large images in a directory, and creates a page displaying their thumbnails along with next and prev. links.

Thanks,
Skyler

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Jun 4, 2002

#2

KarveR

MIS

I did one a while ago that would allow upload and then take all images and create a page showing them using the GD library, dunno if it'll help but here it is:
-----------------gallery.php-------------------------
<?php
// made by Karv copyright him and the ones he ripped some code off
// cheers peeps - abuse this code as you like and feel free to name me in it

function getimgArray($dir,$sort='asort')
{

if ( is_dir($dir) ) {

$fd = @opendir($dir);

while ( ($part = @readdir($fd)) == TRUE ) {

clearstatcache();

if ($part != "." && $part != ".." && (ereg("\\.jpg\$",$part) || ereg("\\.JPG\$",$part))) { // unix is picky, ok?

$dir_array[] = $part;
}
}

if($fd == TRUE) {
closedir($fd);
}

if (is_array($dir_array)) {

$sort($dir_array);

$dir_file_count = count($dir_array);

Return $dir_array;

} else {

Return FALSE;
}

} else {

Return FALSE;
}

}

// sort out whats goin on

$file_array = getimgArray('.','asort'); //set directory and sort type here

$i=1;

// check we have stuff to play with

if (!empty($file_array)) {
echo "<body bgcolor=black>";

echo "<div align=\"center\"><table border=0 width=90% cellpadding=0 cellspacing=0><tr>";

foreach ($file_array as $file_name) {

$textfile="$file_name.txt";

//see if we are making left or right cells

if ($i%5) {

echo "<td>";

echo "<div align=\"center\"><a href=$file_name><img src=\"image.php?file_name=$file_name\" border=3 alt=\"";
if (file_exists($textfile)){

include($textfile);

}else{

echo "Picture no. $i";

}

echo "\"></div></a></td>";

} else {

// pic 5

echo "<td>";
echo "<div align=\"center\"><a href=$file_name><img src=\"image.php?file_name=$file_name\" border=3 alt=\"";
if (file_exists($textfile)){

include($textfile);

}else{

echo "Picture no. $i";

}
echo "\"></div></a>";

echo "</td></tr><tr>";

}

$i++;

}

} else {

// no piccies

echo "no piccies in the directory";

}

echo "</table></div>";

unset($idx);

?>



<div align="center">
<form enctype="multipart/form-data" action="uploaded.php" method="post">
<table width="100%" border="0" cellspacing="0" cellpadding="0" align="center">
<tr>
<td>
<div align="center">Upload a piccy<br>Caption<input type="text" name="caption">
<input type="hidden" name="MAX_FILE_SIZE" value="150000">
<input type=hidden name=return_where value="virtualkev_old">
<input type=hidden name=return_to value="3_test.phtml">
File:<input name="userfile" type="file">
<input type="submit" value="Send File" name="submit">
</div>
</td>
</tr>
</table>
</form>
</div>

-------------------image.php--------------------------
<?php
$src_img = ImageCreateFromJPEG($file_name);

/* desired width of the thumbnail */
$picsize = 100;

/* grabs the height and width */
$new_w = imagesx($src_img);
$new_h = imagesy($src_img);

/* calculates aspect ratio */
$aspect_ratio = $new_h / $new_w;

/* sets new size */
$new_w = $picsize;
//$new_h = abs($new_w * $aspect_ratio);
$new_h = 120;
/* creates new image of that size */
$dst_img = ImageCreate($new_w,$new_h);

/* copies resized portion of original image into new image */
imagecopyresized($dst_img,$src_img,0,0,0,0,$new_w,$new_h,imagesx($src_img),imagesy($src_img));

imageJPEG($dst_img);
ImageDestroy($dst_img);
?>

-------------------------------------

Oh btw it stores textfiles for captions too, if there isnt a textfile it'll just say "picture no#".

Have fun. ***************************************
Party on, dudes!
[cannon]

[cannon]

Upvote 0 Downvote

Jun 4, 2002

#3

sonnysavage

Programmer

Here's some logic I just developed. You can specify a max width AND height. It calculates the aspect ratios and decides whether to use the max width or max height to do the scaling and maintains the images original aspect ratio (no "stretching&quot

.

Code:

$imageratio = $oldwidth / $oldheight;
if (($maxwidth > 0) && ($maxheight > 0)) { $maxratio = $maxwidth / $maxheight; }
if ($maxratio == $imageratio) {
	// do not change the $maxwidth or $maxsize values
} else if (($maxratio > $imageratio) || ($maxwidth < 1)) {
	$maxwidth = abs($maxheight * $imageratio);
} else {
	$maxheight = abs($maxwidth / $imageratio);
}
$newimage = imagecreatetruecolor($maxwidth, $maxheight);
imagecopyresampled($newimage, $oldimage, 0, 0, 0, 0, $maxwidth, $maxheight, $oldwidth, $oldheight);
imagejpeg($newimage);

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