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  1. <?php
  2. function italico(&$array) {
  3.     $cant = count($array);    
  4.  
  5.     if ($cant==0)  return null;        
  6.     $salida = null;
  7.  
  8.     if ($cant>1)
  9.     {
  10.     	for ($i=0;$i<$cant-2;$i++)
  11.         	$salida .= $array[$i].' ,';
  12.  
  13. 		return $salida.$array[$cant-2].' y '.$array[$cant-1];  
  14.  
  15. 	}else
  16.     	return $array[0];
  17. }
  18.  
  19. function alexis($array) {
  20. 	$string = implode(", ", $array);
  21. 	return substr_replace ($string, " y ", strrpos($string, ","), 2);
  22. }
  23.  
  24. $array = array("uno", "dos", "tres", "cuatro", "cinco", "seis", "siete", "ocho", "nueve", "diez", "once", "doce", "trece", "catorce", "quince", "dieciseis", "diecisiete", "dieciocho", "diecinueve", "veinte"); 
  25.  
  26. $ini1 = microtime(true) * 1000;
  27. for ($i = 0; $i < 1000; $i++)
  28.     italico($array);
  29. $fin1 = microtime(true) * 1000;
  30. $tiempoItalico = $fin1 - $ini1;
  31.  
  32. $ini2 = microtime(true) * 1000;
  33. for ($i = 0; $i < 1000; $i++)
  34.     alexis($array);
  35. $fin2 = microtime(true) * 1000;
  36. $tiempoAlexis = $fin2 - $ini2;
  37.  
  38. echo "Italico: " . $tiempoItalico."\n";
  39. echo "Alexis: " . $tiempoAlexis;
Success #stdin #stdout 0.02s 20520KB
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Italico: 9.85205078125
Alexis: 3.031982421875
https://ideone.com/VPm2En
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
secret

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