How to start a timer on a 1/30 of a second in php?

Good afternoon, working with API telegram. The question arose about the limits. And what would it solve, I need a timer with a period of 1/30 second. Please tell me how can this be done?
March 25th 20 at 13:46
1 answer
March 25th 20 at 13:48
Thanks, it will fit - Arnold48 commented on March 25th 20 at 13:51

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