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Call to undefined function apc_exists()


You need to install apcu_bc for php 7. Apc emulation in apcu for php 7 was dropped and there is apcu_bc forapc_* methods.

Notice that this extension ONLY emulates methods like apc_* it doesn't emulates classes. So if you will try delete keys in phalcon apc adapters it will most likely throw exception that APCIterator doesn't exist.