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Thread: Using ImageJpeg with quality=-1
Jun 4, 2001, 03:40 #1
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- Mar 2001
- Melbourne, Australia
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Using ImageJpeg with quality=-1
I'm working with the ImageJpeg function in PHP.
This function is documented on the PHP website here: http://www.php.net/manual/en/function.imagejpeg.php
and says that the 'quality' setting can be set in a range of values from 0 (max compression=worst quality) to 100 (no compression, max quality).
However, I've seen the quality set to -1 (but I've lost where I saw this). I've experimented myself, and it seems to produce acceptable results. But can anyone tell me what -1 is actually doing?