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  1. <?php
  2.  
  3. function simple_getDays($value) {
  4.     $days = array (
  5.         1=>'понедельник',
  6.         2=>'вторник',
  7.         3=>'среда',
  8.         4=>'четверг',
  9.         5=>'пятница',
  10.         6=>'суббота',
  11.         7=>'воскресенье',
  12.     );
  13.     foreach ($value as $day) {
  14.         $result[] = $days[$day];
  15.     }
  16.     return implode(', ',$result);
  17. }
  18.  
  19.  
  20. function Stallman_getDays($value)
  21. {
  22.     return implode(', ', array_map(function($day)
  23.     {
  24.     	return call_user_func(
  25.     		function($src, $key)
  26.     		{
  27.     			return $src[$key];	
  28.     		},
  29.     		array (
  30. 		        'понедельник',
  31. 		        'вторник',
  32. 		        'среда',
  33. 		        'четверг',
  34. 		        'пятница',
  35. 		        'суббота',
  36. 		        'воскресенье',
  37. 		    ),
  38. 		    $day - 1);
  39.     }, $value));
  40. }
  41.  
  42.  
  43. $startTime = microtime(true);
  44. for ($i = 0; $i < 9000; $i++) {
  45.     $s = simple_getDays(array(2,5,6));
  46. }
  47. $stopTime = microtime(true);
  48. echo 'foreach takes ' . strval($stopTime - $startTime) . ' seconds' . PHP_EOL;
  49.  
  50. $startTime = microtime(true);
  51. for ($i = 0; $i < 9000; $i++) {
  52.     $s = Stallman_getDays(array(2,5,6));
  53. }
  54. $stopTime = microtime(true);
  55. echo 'functional approach takes ' . strval($stopTime - $startTime) . ' seconds' . PHP_EOL;
  56.  
Success #stdin #stdout 0.19s 52480KB
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foreach takes 0.041383028030396 seconds
functional approach takes 0.11241412162781 seconds
https://ideone.com/eC62Ut
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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