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PHP time processing function

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Release： 2016-07-25 08:42:59
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  2. //mktime()
  3. Convert date and time to unix timestamp
  4. //time()
  5. Get the unix timestamp of the current time
  6. echo date("Y-m-d",mktime(0 ,0,0,12,31,2013))."
    ";
  8. //Example: Calculate the age of a user by calculating the difference between two unix timestamps
  10. $year = 1991;
  11. //Suppose the user's date of birth is 1991.07.16
  12. $month = 07;
  13. $day = 16;
  14. $brithday = mktime(0,0,0,$month,$day,$year);
  15. //Replace the user Convert the date of birth to a unix timestamp
  16. $nowdate = time();
  17. //Get the unix timestamp of the current time
  18. $ageunix = $nowdate - $brithday;
  19. //Get the difference in timestamps
  20. $age = floor ($ageunix / (60*60*24*365));
  21. //The difference in timestamps divided by the number of seconds per year is the user's actual age
  22. echo "The user's age is ".$age."< ;br> The sunrise time of a certain day
  23. //date_sunset()
  24. The sunset time of a certain day
  25. //date()
  26. Format a local time and date
  27. //microtime()
  28. Return the current UNIX timestamp and microseconds
  29. / /The following class calculates the execution time of the program by obtaining the execution time of the two functions
  30. class Timer{
  31. private $startTime;
  32. private $stopTime;
  33. function __construct(){
  34. $this->startTime = 0;
  35. $this->stopTime = 0;
  36. }
  37. function start(){
  38. $this->startTime = microtime(true);
  39. }
  40. function stop(){
  41. $this->stopTime = microtime(true) ;
  42. }
  43. function spent(){
  44. return round(($this->startTime - $this->stopTime),4);
  45. }
  46. }
  47. $timer = new Timer();
  48. $timer-> ;start();
  49. usleep(1000);
  50. $timer->stop();
  51. echo "Time to execute script".$timer->spent()."seconds" ;
  52. ?>
  56. Copy code
PHP

Related labels：
PHP时间处理函数
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