<?php
  
  define ( 'K', 1024 );
  define ( 'M', K * K );

  define ( 'COUNT_MAX' ,   10 * M );
  define ( 'PRINT_STEP',  100 * K );
  
  $memory_base = memory_get_usage();
  
  $a = array();

  for ( $n = 0; $n <= COUNT_MAX; ++$n ) {
    if($n % PRINT_STEP === 0)
      echo $n . "\t" . (memory_get_usage() - $memory_base) / M . "\n";
    $a[$n] = $n;
  }
  
?>