NYCPHP Meetup

[nycphp-talk] one question about resize the image

Kenneth Downs ken at secdat.com
Mon Mar 24 16:23:10 EDT 2008


I think there is a call to get image stats without loading it into memory.

Donald J Organ IV wrote:
> The best way to do this and keep the same scale is, a quick example of 
> this would be;
>
> $maxWidth = 100;
> $maxHeight = 100;
>
> $im = imagecreatefromjpeg( 'path/to/file' );  //This of course would 
> be for a jpeg
>
> $scale = min(100/imagesx( $im ), 100/imagesy($im) );
> $newHeight = $scale * imagesy( $im );
> $newWidth = $scale * imagesx( $im );
>
> those will give you the new height and width(to scale);
>
>
>
> chad qian wrote:
>> I run php to upload/resize images now.But I have one question:
>>  
>> After people upload images, if we want to resize the image,we must 
>> maintain the original aspect ratio. This prevents the image from 
>> being "stretched" or "squashed".
>>  
>> Now people upload two images.And I need to resize these two images
>> 1) "1.jpg" 40*50
>> 2) "2.jpg" 10*20
>>  
>> My thought:(size is height and width here)
>> "1.jpg" or "2.jpg" will be "stretched" or "squashed" if we keep them 
>> as same size.
>> "1.jpg" and "2.jpg" will maintain the original aspect ratio but 
>> different size
>>  
>> Is it right?
>>  
>> Thanks!
>>  
>> chad
>>  
>>
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-- 
Kenneth Downs
Secure Data Software, Inc.
www.secdat.com    www.andromeda-project.org
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