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Just updated to saucy 13.10 and json_encode is missing from the bundled php. json doesn't appear in the phpinfo() output and i'm getting this error in my app:

PHP Fatal error:  Call to undefined function json_encode()

Anyone else experiencing this or know the fix?

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Install php5-json:

sudo apt-get install php5-json

This used to be provided by php5-common but that has changed in Saucy. No idea why and seems like a silly thing to do but it's very simple to fix.

After the installation, make sure to also restart the Apache2 server:

sudo service apache2 restart
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    thank you. I found this explanation...funny stuff: iteration99.com/2013/php-json-removed-from-php-5-5 – Chris DaMour Oct 18 '13 at 22:58
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    Oh god, it's that?! I've read about that nonsense ages ago but never dreamed anybody would feel that it was legally contrary to the PHP license. What a waste of time. – Oli Oct 18 '13 at 23:08
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    @AlexButum It's still on iteration99.com - it's just not available at the moment. I'd guess it's a static site (eg Jekyll) that hasn't been rebuilt properly. – Oli Dec 20 '13 at 14:03
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When you install this package, if you don't see php5-fpm restart post install, don't forget to do the following:

sudo service php5-fpm restart
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  • Dude, thank U very much - only because Your answer I can use php-json lib, even after restart/reload nginx didn`t load this lib via fpm. Thx a lot. – Arthur Kushman Jan 28 '14 at 10:18

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