<?php
/**
* example5.php
*
* apply a callback function to all the files in a tree
* this example creates thumbnails for every jpeg image (which doesn't
* already have one)
*/
require_once('pfpFileTree.inc.php');
$src='/var/www/html/';
$t=new pfpFileTree($src);
$t->readTree(array('name'=>'{*.jpg,*.jpeg}','type'=>'f','r'=>true));
$t->applyCallBack('cb',null);
$t->readTree(array('name'=>'{*.jpg,*.jpeg}','type'=>'f','r'=>true));
$t->ls();
function cb($filename, $attrs, $additional)
{
// create a directory called thumbnails in every
// directory - and populate with smaller verions
// of the jpeg files
$size=128;
$currentdir=dirname($filename);
if (basename($currentdir)!='thumbnails') {
// because we don't want to make thumbnails of the thumbnails!
if (!is_dir($currentdir . '/thumbnails')) {
if (!mkdir($currentdir . '/thumbnails')) {
// returning false wold halt progress
print "unable to create thumbnails in $currentdir\n";
return true;
}
} else {
if (filemtime($filename)
<filemtime($currentdir . '/thumbnails/' . basename($filename))) {
// thumbnail is newer
return true;
}
}
list($width, $height) = getimagesize($filename);
$divisor=max($width/$size, $height/$size);
if ($divisor<1) $divisor=1;
$img=imagecreatefromjpeg($filename);
$thumb=imagecreatetruecolor(
(integer)($width/$divisor), (integer)($height/$divisor));
imagecopyresampled($thumb, $img,
0, 0, 0, 0,
(integer)($width/$divisor),(integer)($height/$divisor),
$width, $height);
imagejpeg($thumb, $currentdir . '/thumbnails/' . basename($filename));
imagedestroy($thumb);
imagedestroy($img);
}
return true;
}
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