5 is so idiomatic as "one half" that I would consider "1.5 hours" to be more readable than "1 hour and 30 minutes" or "1 1/2 hours", or even "1½ hours". ... <看更多>

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$start = new DateTime('09:00:00'); $end = new DateTime('16:00:01'); // add 1 second because last one is not included in the loop $interval ... ... <看更多>