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  1. <?php
  2. function item_array_key_exists($a, $buscado) {
  3. 	if(!is_array($a)) return NULL;
  4. 	$v=array_count_values($a);
  5. 	return array_key_exists($buscado,$a)?$v[$buscado]:0;
  6. }
  7. function foreach_inc($a, $buscado) {
  8. 	if(!is_array($a)) return NULL;
  9. 	$i=0;
  10. 	foreach($a as $v)
  11. 		if($buscado===$v)
  12. 			$i++;
  13. 	return $i;
  14. }
  15.  
  16.  
  17.  
  18. $names = ['item_array_key_exists', 'foreach_inc'];
  19. $loops = 10000;
  20. $arr_rand_items = 500;
  21. $arr_repeated = 3;
  22. $a = [];
  23.  
  24.  
  25.  
  26. //Generar array de strings random
  27. function generateRandomString($length = 10) {
  28.     $characters = 'abcdefghijklmnopqrstuvwxyz';
  29.     $charactersLength = strlen($characters);
  30.     $randomString = '';
  31.     for ($i = 0; $i < $length; $i++) {
  32.         $randomString .= $characters[rand(0, $charactersLength - 1)];
  33.     }
  34.     return $randomString;
  35. }
  36. for ($i = 0; $i < $arr_rand_items; $i++)
  37. 	$a[] = generateRandomString();
  38.  
  39. //Multiplicar el array
  40. $aux = $a;
  41. for ($i = 0; $i < $arr_repeated - 1; $i++)
  42. 	$a = array_merge($a, $aux);
  43.  
  44. $item_buscado = $a[array_rand($a)];
  45.  
  46. $params = array($a, $item_buscado);
  47.  
  48.  
  49. function speed_test($code, $loops = 500000, $params = []) {
  50. 	$before = microtime(true);
  51. 	for ($i=0 ; $i<$loops ; $i++) {
  52. 	    $code($params[0],$params[1]);
  53. 	}
  54. 	$after = microtime(true);
  55. 	$delay = $after-$before;
  56. 	return $delay;
  57. }
  58. $best = 999999999;
  59. $worst = 0;
  60. $best_num = -1;
  61.  
  62.  
  63. foreach ($names as $code_num => $f)
  64. {
  65. 	$delay = speed_test($f, $loops, $params);
  66. 	if ($delay < $best) {
  67. 		$best = $delay;
  68. 		$best_num = $code_num;
  69. 	}
  70. 	if ($delay > $worst) {
  71. 		$worst = $delay;
  72. 	}
  73. 	echo "Code #" . ($code_num + 1) . "($names[$code_num]): \t" . number_format($delay, 2) . " secs/" . $loops/1E3 . "k loops\n";
  74. }
  75. echo "BEST: $names[$best_num] by " . number_format((1- $best / $worst) * 100, 0) . "%";
Success #stdin #stdout 2.36s 52488KB
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Code #1(item_array_key_exists): 	1.03 secs/10k loops
Code #2(foreach_inc): 	1.31 secs/10k loops
BEST: item_array_key_exists by 22%
https://ideone.com/ViIHJH
Benchmark codes - speed test
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
secret

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