<?php

header ("Content-type: image/jpeg");

//$pathy = "../images/"; // If this is changed, it should be changed in img_manager.php as well
//$img = $pathy.$_GET['img'];
//$percent = $_GET['percent'];
//$constrain = $_GET['constrain'];
//$w = $_GET['w'];
//$h = $_GET['h'];


// get image size of img
$x = getimagesize($img);

// image width
$sw = $x[0];

// image height
$sh = $x[1];


if ($percent > 0) {
	// calculate resized height and width if percent is defined
	$percent = $percent * 0.01;
	$w = $sw * $percent;
	$h = $sh * $percent;
} else {
	if (isset ($w) AND !isset ($h)) {
		// autocompute height if only width is set
		$h = (100 / ($sw / $w)) * .01;
		$h = @round ($sh * $h);
	} elseif (isset ($h) AND !isset ($w)) {
		// autocompute width if only height is set
		$w = (100 / ($sh / $h)) * .01;
		$w = @round ($sw * $w);
	} elseif (isset ($h) AND isset ($w) AND isset ($constrain)) {
		// get the smaller resulting image dimension if both height
		// and width are set and $constrain is also set
		$hx = (100 / ($sw / $w)) * .01;
		$hx = @round ($sh * $hx);

		$wx = (100 / ($sh / $h)) * .01;
		$wx = @round ($sw * $wx);

		if ($hx < $h) {
			$h = (100 / ($sw / $w)) * .01;
			$h = @round ($sh * $h);
		} else {
			$w = (100 / ($sh / $h)) * .01;
			$w = @round ($sw * $w);
		}
	}
}


$im = @ImageCreateFromJPEG ($img) or // Read JPEG Image
$im = @ImageCreateFromPNG ($img) or // or PNG Image
$im = @ImageCreateFromGIF ($img) or // or GIF Image
$im = false; // If image is not JPEG, PNG, or GIF

if (!$im) {
	// We get errors from PHP's ImageCreate functions...
	// So let's echo back the contents of the actual image.
	readfile ($img);
} else {
	// Create the resized image destination
	$thumb = @ImageCreateTrueColor ($w, $h);
	// Copy from image source, resize it, and paste to image destination
	@ImageCopyResampled ($thumb, $im, 0, 0, 0, 0, $w, $h, $sw, $sh);
	// Output resized image
	@ImageJPEG ($thumb);
}
?>