note 80656 added to function.getimagesize
| From: | Anonymous at osu1 dot php dot net | Date: | Mon, 28 Jan 2008 05:14:19 +0000 |
| Subject: | note 80656 added to function.getimagesize | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-135449@lists.php.net to get a copy of this message | ||
// A way to maintain Aspect Ratio
// Here using standard aspect ratio of 4:3 for landscape and 3:4 for portrait.
// example is 50% image resize
//NewWidth = GivenHeight * (OriginalWidth / OriginalHeight)
//NewHeight = GivenWidth * (OriginalHeight / OriginalWidth)
$defaultImageWidth = 160; //your gallery image width
$defaultImageHeight = 120; //your gallery image height
$imageWidth = 462; // use getimagesize() to get image width
$imageHeight = 432; // use getimagesize() to get image height
if($imageWidth > $imageHeight)
{
// landscape image
$newWidth = $defaultImageWidth;
$newHeight = (int)($defaultImageWidth * $imageHeight / $imageWidth);
if($newHeight > $defaultImageHeight)
{
$newHeight = $defaultImageHeight;
$newWidth = (int)($defaultImageHeight * $imageWidth / $imageHeight);
}
}
elseif ($imageHeight > $imageWidth)
{
// portrait image
$newHeight = $defaultImageHeight;
$newWidth = (int)($defaultImageHeight * $imageWidth / $imageHeight);
if($newWidth > $defaultImageWidth)
{
$newWidth = $defaultImageWidth;
$newHeight = (int)($defaultImageWidth * $imageHeight / $imageWidth);
}
}
else
{
// square image
$newWidth = $defaultImageWidth;
$newHeight = $defaultImageHeight;
}
// here using Image Magick command line utility to resize image, OR you can use some other package.
//@exec("/usr/local/bin/convert $sourceImageFilePath - -resize $newWidthx$newHeight\!
$destinationImageFilePath");
echo '<b>New Width:</b>'.$newWidth;
echo "<br>";
echo '<b>New Height:</b>'.$newHeight;
----
Server IP: 203.199.69.133
Probable Submitter: 203.129.203.66
----
Manual Page -- http://www.php.net/manual/en/function.getimagesize.php
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