How to know how many cpu time and other resource consumed by a function?

Question

Don't need accurate, just approximately. Then I can know the performance of this function.

and in general: http://stackoverflow.com/search?q=profiling+php — Gordon, Oct 16 '11 at 11:43

score 1 · Accepted Answer · answered Oct 16 '11 at 11:34

Don't need accurate, just approximately.

You could use memory_get_usage(). Otherwise profile with microtime().

Then I can know the performance of this function.

Relative to what?

What sort of thing are you trying to measure? Donald Knuth once said something about optimisation...

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