get server ram with php

gistfile1.php

<?php
  $fh = fopen('/proc/meminfo','r');
  $mem = 0;
  while ($line = fgets($fh)) {
    $pieces = array();
    if (preg_match('/^MemTotal:\s+(\d+)\skB$/', $line, $pieces)) {
      $mem = $pieces[1];
      break;
    }
  }
  fclose($fh);

  echo "$mem kB RAM found"; 
  
?>

// result
255908 kB RAM found


resource : https://stackoverflow.com/questions/1455379/get-server-ram-with-php