How to calculate program running time in php

1. Functions used

a. Use the functionmicrotime ()

microtime ( bool $get_as_float = ? ) : mixed

• $get_as_floatwhich can be omitted when set toTRUEWhen , it is specified that the function should return a floating point number, otherwise it returns a string. Default is FALSE.

• Return value: Default return string , wheresecis the sinceUnixepoch (0:00:00 January 1, 1970 GMT) The number of seconds since,microsecis the microsecond part. If the argument is set toTRUE, returns a floating point number representing the current time in seconds since theUnixepoch, accurate to microseconds.

b. Use the functionexplode()

explode(separator,string,limit)

• separator to specify where to split characters string.

• string The string to be split.
  

• limit specifies the number of array elements returned (optional)

2. The code is as follows :

3. Output:

0.58607300 1617257726本网页执行耗时：0.017 秒。1617257726

PS: For the sake of neatness of the program, we can use this code This function can also be achieved by writing it as a class, introducing it when used, instantiating the class before the program starts, and calling a method at the end.

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