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  1. <?php
  2. function italico1(&$arr)
  3.     {
  4.         $cant = count($arr);    
  5.  
  6.         if ($cant==0)  return null;        
  7.         $salida = null;
  8.  
  9.         if ($cant>1)
  10.         {
  11.             for ($i=0;$i<$cant-2;$i++)
  12.                 $salida .= $arr[$i].' ,';
  13.  
  14.             return $salida.$arr[$cant-2].' y '.$arr[$cant-1];  
  15.  
  16.         }else
  17.             return $arr[0];      
  18.  
  19.     }
  20.  
  21. function italico2(&$arr)
  22. {
  23.     switch (count($arr))
  24.     {
  25.     case 0: return null;
  26.     case 1: return $arr[0];
  27.     default:    
  28.         $ult = array_pop($arr);
  29.         return implode (' ,',$arr).' y '.$ult;
  30.     }    
  31. } 
  32.  
  33. function alexis($array) {
  34.     $string = implode(", ", $array);
  35.     return substr_replace ($string, " y ", strrpos($string, ","), 2);
  36. }
  37.  
  38. $a = range(1, 1000);
  39.  
  40. $ini2 = microtime(true) * 1000;
  41. for ($i = 0; $i < 1000; $i++)
  42.     alexis($a);
  43. $fin2 = microtime(true) * 1000;
  44. $tiempoAlexis = $fin2 - $ini2; 
  45.  
  46. $ini1 = microtime(true) * 1000;
  47. for ($i = 0; $i < 1000; $i++)
  48.     italico1($a);
  49. $fin1 = microtime(true) * 1000;
  50. $tiempoItalico1 = $fin1 - $ini1; 
  51.  
  52. $ini1 = microtime(true) * 1000;
  53. for ($i = 0; $i < 1000; $i++)
  54.     italico2($a);
  55. $fin1 = microtime(true) * 1000;
  56. $tiempoItalico2 = $fin1 - $ini1;
  57.  
  58.  
  59. echo "Italico (script #1): " . $tiempoItalico1."\n";
  60. echo "Italico (script #2): " . $tiempoItalico2."\n";
  61. echo "Alexis: " . $tiempoAlexis;
  62.  
Success #stdin #stdout 0.93s 20864KB
comments (?)
stdin 
Standard input is empty
stdout 
Italico (script #1): 587.38818359375
Italico (script #2): 172.72485351562
Alexis: 168.13696289062
https://ideone.com/ajHblr
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
secret

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