How can I get the CPU and Memory useage

Question

I want to know the memory and CPU usage in php, because I\'m using cronejobs sometimes the CPU is overloaded so in this case I don\'t wan to start more process, I just want

Answer 1

I think better way is get load avarage, because it depends not only on CPU, but on HDD speed also.

Here is a doc: http://php.net/manual/en/function.sys-getloadavg.php