yac_apcu_functions.php

<?php

function yac_store() {
  static $yac;

  if (!isset($yac)) {
    $yac = new Yac('');
  }

  return $yac;
}

function yac_key($key) {
  $key_is_ascii = mb_check_encoding($key, 'ASCII');
  if (strlen($key) < 48 && $key_is_ascii) {
    return $key;
  }

  // Return a string that uses as much as possible of the original cache ID
  // with the hash appended.
  $hash = hash('sha1', $key);
  if (!$key_is_ascii) {
  return $hash;
  }

  return substr($key, 0, 48 - strlen($hash)) . $hash;
}

function apcu_add($key, $var = null, $ttl = 0) { return yac_store()->add($key, $var, $ttl); }
function apcu_cache_info($limited = false) { return yac_store()->info(); }
//function apcu_cas($key, $old, $new) { return apc_cas($key, $old, $new); }
function apcu_clear_cache() { return yac_store()->flush(); }
//function apcu_dec($key, $step = 1, &$success = false) { return apc_dec($key, $step, $success); }
function apcu_delete($key) { return yac_store()->delete($key); }
//function apcu_exists($keys) { return apc_exists($keys); }

function apcu_fetch($key, &$success = false) {
  if (is_string($key)) {
    $skey = yac_key($key);
    return yac_store()->get($skey);
  }

  $key_map = array();
  foreach ($key as $k => $v) {
    $key_map[yac_key($v)] = $v;
  }

  $result = yac_store()->get(array_keys($key_map));

  if (empty($result)) {
    return $result;
  }

  $return = array();
  foreach ($result as $key => $value) {
    $return[$key_map[$key]] = $value;
  }

  return $return;
}

//function apcu_inc($key, $step = 1, &$success = false) { return apc_inc($key, $step, $success); }
//function apcu_sma_info($limited = false) { return apc_sma_info($limited); }
function apcu_store($key, $var = null, $ttl = 0) { $skey=yac_key($key); error_log(__FUNCTION__ . ':' . $key); return yac_store()->set($skey, $var, $ttl); }