Ask for a PHP program to modify the size of GIF pictures and keep GIF animated
Ask for a PHP to modify the size of the GIF picture program, and keep GIF dynamic effect, thank you all
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Try something like ImageMagick. It hasn't been modified.
The first comment provides a class.
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Split multi-frame GIF gifreader.php
Assemble multi-frame gif GIFEncoder.class.php
Even a file can be searched on the internet.
Performance is slightly less than ImageMagick, but you don't always get ImageMagick support
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