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  1. <?php
  2.  
  3. function delta($prefix, $t1) {
  4.         $t2 = microtime(true);
  5.         printf("%s %0.6f\n", $prefix, ($t2 - $t1) * 1000);
  6. }
  7.  
  8. function genarray() {
  9.         $a = array();
  10.         for($i = 0; $i < 10000; $i++) {
  11.                 $a[] = $i;
  12.         }
  13.         return($a);
  14. }
  15.  
  16. function noref($a) {
  17.         for($i = 0; $i < 10000; $i++) {
  18.                 is_array($a);
  19.         }
  20. }
  21.  
  22. function byref($a) {
  23.         for($i = 0; $i < 10000; $i++) {
  24.                 is_array(&$a);
  25.         }
  26. }
  27.  
  28. $a = genarray();
  29. $t1 = microtime(true);
  30. noref($a);
  31. delta("NoRef:", $t1);
  32.  
  33. $t3 = microtime(true);
  34. byref($a);
  35. delta("ByRef:", $t3);
Runtime error #stdin #stdout #stderr 0.01s 20520KB
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Standard input is empty
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Standard output is empty
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PHP Fatal error:  Call-time pass-by-reference has been removed in /home/LHHrI9/prog.php on line 24
https://ideone.com/l8cClP
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
public

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