function staticCache($file, $line, $key, $callback = null)
{
if (!isset($callback)) {
$callback = $key;
$key = null;
}
static $map;
if (!isset($map)) {
$map = (object) array();
}
if (isset($map->{"{$file}:{$line}-{$key}"})) {
return $map->{"{$file}:{$line}-{$key}"};
}
$cacheFile = $_SERVER['cachePath'] . '/' . substr(pathinfo($file, PATHINFO_FILENAME), 0, 10) . '__' . substr(preg_replace('/(?i)[^a-z0-9]+/', '', $key), 0, 10) . '__' . sha1("{$file}:{$line}-{$key}") . '.cache';
$cacheCorrelationFile = "{$cacheFile}.correlation";
if (version_development && is_file($cacheCorrelationFile)) {
foreach (array_diff(unserialize(file_get_contents($cacheCorrelationFile)), includedFile()) as $file) {
if (is_file($file)) {
includedFile($file);
}
}
}
if (!is_file($cacheFile) || version_development && filemtime($cacheFile) < lastCodeChangeTimestamp()) {
directory(dirname($cacheFile));
file_put_contents($cacheFile, serialize($callback()));
file_put_contents($cacheCorrelationFile, serialize(includedFile()));
}
$map->{"{$file}:{$line}-{$key}"} = unserialize(file_get_contents($cacheFile));
return $map->{"{$file}:{$line}-{$key}"};
}
function codeChanged()
{
static $includedFiles = array();
static $result = true;
$newIncludedFiles = includedFile();
if (count($includedFiles) != count($newIncludedFiles)) {
$fingerprintFile = $_SERVER['cachePath'] . '/codeBase_' . sha1(serialize($newIncludedFiles)) . '.timestamp';
$result = !is_file($fingerprintFile) || codeTimestamp() > filemtime($fingerprintFile);
if ($result) {
directory(dirname($fingerprintFile));
$touchResult = touch($fingerprintFile);
enforce($touchResult, "Could not touch '{$fingerprintFile}'");
}
$includedFiles = $newIncludedFiles;
}
return $result;
}
