php - How does an application performance monitoring tool like New Relic RPM work? -

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how application performance monitoring tool new relic rpm work? how can figure out information application? if build similar php application place start? (i know new relic php available, i'm interested in how build 1 myself).

a start @ php's reflection system;

http://php.net/manual/en/book.reflection.php

use can gather vital information using traces , profiler dumps, @ xdebug website more information.

http://www.xdebug.org/


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