note 80656 deleted from function.getimagesize by cmb
| From: | cmb@php.net | Date: | Sun, 18 Dec 2016 09:39:54 +0000 |
| Subject: | note 80656 deleted from function.getimagesize by cmb | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-208630@lists.php.net to get a copy of this message | ||
Note Submitter: Anonymous
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// 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;