Programming/php

my encode sample

by

[code language=php]
// my_encode( )
$secret = ‘11111’;

function my_encode($data) {
$data = serialize($data);
$hash = md5($GLOBALS[‘secret’] . $data);
return array($data, $hash);
}

// my_decode( )
function my_decode($data, $hash) {
if (!empty($data) && !empty($hash)) {
if (md5($GLOBALS[‘secret’] . $data) == $hash) {
return unserialize($data);
} else {
error_log(“Validation Error: Data has been modified”);
return false;
}
}
return false;
}

TEST: $secret = ‘11111’;
// Load in and validate old dataif (! $data = my_decode($_GET[‘data’], $_GET[‘hash’])) {// crack attempt}// Process form (new form data is in $_GET)// Update $data$data[‘username’] = $_GET[‘username’];$data[‘stage’]++;unset($data[‘password’]);// Encode resultslist ($data, $hash) = pc_encode($data);// Store data and hash inside the form?> ” method=”get”>
…
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[/code]

PHP: cachelite program sample

by

emerge dev-php/PEAR-Cache_Lite

require_once "Cache/Lite.php"; 

define('ENABLE_CACHE_LITE',1); 

function _fn_get_data_from_cache($key) { 

$options = array( 

  'cacheDir' => '/tmp/', 

  'lifeTime' => 10, 

  'pearErrorMode' => CACHE_LITE_ERROR_DIE 

  ); 

if (ENABLE_CACHE_LITE) { 

    $cache=new Cache_Lite($options); 

    if ($data=$cache->get($key)) { 

      // got data from cache_lite then return 

      return $data; 

    } 

  } 

// not found! then do the process 

  // sample 

  $data=time(); 

if (ENABLE_CACHE_LITE) { 

    $cache->save($data); 

  } 

return $data; 

} 

// ====== 

$key='abc'; 

echo _fn_get_data_from_cache($key);