Problem has been solved. Solution is i must use full path in calling dwebp /usr/local/lib/dwebp "/full/path/test.webp" -o "/full/path/test.png"
I have installed webp package in my server and i want to use "dwebp" command in my PHP application....
How to check in PHP whether xcache is installed or not, other than using phpinfo? If checking APC, i can use this one $apc_installed =...
You can use maxmind geoip. They have free & paid version database.
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