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  1. <?php
  2. set_time_limit(600);
  3. $a = array();
  4. $time = array('for_loop'=>0, 'array_chunk'=>0, 'while_floor'=>0, 'while_array_slice'=>0);
  5. // for loop
  6. for($c=1;$c<=10;$c++){
  7. 	$time_start = microtime(true);
  8.  
  9. 	for($i=1;$i<=100;$i+=2)
  10. 		$a[]=$i;
  11.  
  12. 	$two_pair_as_range_compare = function($array, $compare){
  13. 		for($i=0;$i<count($array);$i+=2){
  14. 			if( $compare>=$array[$i] && $compare<=$array[$i+1] )
  15. 				return true;
  16. 		}
  17. 		return false;
  18. 	};
  19.  
  20. 	for($i=2;$i<=100;$i+=2)
  21. 		$two_pair_as_range_compare($a, $i);
  22.  
  23. 	$time_end = microtime(true);
  24.  
  25. 	$time['for_loop'] += $time_end - $time_start;
  26. }
  27.  
  28. // array_chunk
  29. for($c=1;$c<=10;$c++){
  30. 	$time_start = microtime(true);
  31.  
  32. 	// for loop
  33. 	for($i=1;$i<=100;$i+=2)
  34. 		$a[]=$i;
  35.  
  36. 	$two_pair_as_range_compare = function($array, $compare){
  37. 		$range = array_chunk($array,2);
  38. 		foreach($range as $eq){
  39. 			if( $compare>=$eq[0] && $compare<=$eq[1] )
  40. 				return true;
  41. 		}
  42. 		return false;
  43. 	};
  44.  
  45. 	for($i=2;$i<=100;$i+=2)
  46. 		$two_pair_as_range_compare($a, $i);
  47.  
  48. 	$time_end = microtime(true);
  49.  
  50. 	$time['array_chunk'] += $time_end - $time_start;
  51. }
  52.  
  53. // while floor
  54. for($c=1;$c<=10;$c++){
  55. 	$time_start = microtime(true);
  56.  
  57. 	// for loop
  58. 	for($i=1;$i<=100;$i+=2)
  59. 		$a[]=$i;
  60.  
  61. 	$two_pair_as_range_compare = function($a, $b){
  62. 		$cc = 0;
  63. 		while(1){
  64. 		  if( floor($a[$cc]) && floor($a[$cc+1]) ){
  65. 			if( floor($a[$cc]) < $b && $b < floor($a[$cc+1]) ){
  66. 			  return true; //echo '找到('.$a[$cc].'-'.$a[$cc+1].')';
  67. 			}
  68. 		  }else{ return false; break;}
  69. 		  $cc=$cc+1;
  70. 		}
  71. 	};
  72.  
  73. 	for($i=2;$i<=100;$i+=2)
  74. 		$two_pair_as_range_compare($a, $i);
  75.  
  76. 	$time_end = microtime(true);
  77.  
  78. 	$time['while_floor'] += $time_end - $time_start;
  79. }
  80.  
  81. // while array_slice
  82. for($c=1;$c<=10;$c++){
  83. 	$time_start = microtime(true);
  84.  
  85. 	// for loop
  86. 	for($i=1;$i<=100;$i+=2)
  87. 		$a[]=$i;
  88.  
  89. 	$two_pair_as_range_compare = function($array, $element){
  90. 		$cnt = 0;
  91. 		while(($pair = array_slice($array,$cnt,2)) && (count($pair) === 2)){
  92. 			$cnt += 2;
  93. 			if($pair[0] <= $element && $pair[1] >= $element){
  94. 				return true;
  95. 			}
  96. 		}
  97. 		return false;
  98. 	};
  99.  
  100. 	for($i=2;$i<=100;$i+=2)
  101. 		$two_pair_as_range_compare($a, $i);
  102.  
  103. 	$time_end = microtime(true);
  104.  
  105. 	$time['while_array_slice'] += $time_end - $time_start;
  106. }
  107.  
  108. print_r($time);exit;
  109. exit;
Success #stdin #stdout #stderr 2.81s 24448KB
comments (?)
stdin 
Standard input is empty
stdout 
Array
(
    [for_loop] => 0.016389608383179
    [array_chunk] => 0.11997652053833
    [while_floor] => 0.034758329391479
    [while_array_slice] => 2.634635925293
)
stderr 
PHP Notice:  Undefined offset: 1050 in /home/QeBUPg/prog.php on line 64
PHP Notice:  Undefined offset: 1100 in /home/QeBUPg/prog.php on line 64
PHP Notice:  Undefined offset: 1150 in /home/QeBUPg/prog.php on line 64
PHP Notice:  Undefined offset: 1200 in /home/QeBUPg/prog.php on line 64
PHP Notice:  Undefined offset: 1250 in /home/QeBUPg/prog.php on line 64
PHP Notice:  Undefined offset: 1300 in /home/QeBUPg/prog.php on line 64
PHP Notice:  Undefined offset: 1350 in /home/QeBUPg/prog.php on line 64
PHP Notice:  Undefined offset: 1400 in /home/QeBUPg/prog.php on line 64
PHP Notice:  Undefined offset: 1450 in /home/QeBUPg/prog.php on line 64
PHP Notice:  Undefined offset: 1500 in /home/QeBUPg/prog.php on line 64
https://ideone.com/fJ6fvK
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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