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  1. <?php
  2.  
  3. memory_status();
  4.  
  5. $a = range(0, 99);
  6. $b = array_fill(0, 100, $a);
  7. $c = array_fill(0, 100, $b);
  8.  
  9. memory_status();
  10.  
  11. foreach ($c as &$v1) {
  12.     foreach ($v1 as &$v2) {
  13.         foreach ($v2 as &$v3) {
  14.             // do nothing
  15.         }
  16.     }
  17. }
  18.  
  19. memory_status();
  20.  
  21. function memory_status() {
  22.     static $last;
  23.     $usage = memory_get_peak_usage();
  24.     echo "Current memory usage: $usage";
  25.     if ($last) {
  26.         echo ", delta from last call: ".($usage - $last);
  27.     }
  28.  
  29.     echo "\n";
  30.     $last = $usage;
  31. }
Success #stdin #stdout 0.58s 20520KB
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stdin
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Standard input is empty
stdout
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Current memory usage: 119024
Current memory usage: 134324, delta from last call: 15300
Current memory usage: 78595888, delta from last call: 78461564
https://ideone.com/a6ZM2R
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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