/usr/share/php/Symfony/Component/Cache/Traits/PhpFilesTrait.php is in php-symfony-cache 3.4.6+dfsg-1.
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/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Cache\Traits;
use Symfony\Component\Cache\Exception\CacheException;
use Symfony\Component\Cache\Exception\InvalidArgumentException;
/**
* @author Piotr Stankowski <git@trakos.pl>
* @author Nicolas Grekas <p@tchwork.com>
* @author Rob Frawley 2nd <rmf@src.run>
*
* @internal
*/
trait PhpFilesTrait
{
use FilesystemCommonTrait;
private $includeHandler;
private $zendDetectUnicode;
public static function isSupported()
{
return function_exists('opcache_invalidate') && ini_get('opcache.enable');
}
/**
* @return bool
*/
public function prune()
{
$time = time();
$pruned = true;
$allowCompile = 'cli' !== PHP_SAPI || ini_get('opcache.enable_cli');
set_error_handler($this->includeHandler);
try {
foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->directory, \FilesystemIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
list($expiresAt) = include $file;
if ($time >= $expiresAt) {
$pruned = @unlink($file) && !file_exists($file) && $pruned;
if ($allowCompile) {
@opcache_invalidate($file, true);
}
}
}
} finally {
restore_error_handler();
}
return $pruned;
}
/**
* {@inheritdoc}
*/
protected function doFetch(array $ids)
{
$values = array();
$now = time();
if ($this->zendDetectUnicode) {
$zmb = ini_set('zend.detect_unicode', 0);
}
set_error_handler($this->includeHandler);
try {
foreach ($ids as $id) {
try {
$file = $this->getFile($id);
list($expiresAt, $values[$id]) = include $file;
if ($now >= $expiresAt) {
unset($values[$id]);
}
} catch (\Exception $e) {
continue;
}
}
} finally {
restore_error_handler();
if ($this->zendDetectUnicode) {
ini_set('zend.detect_unicode', $zmb);
}
}
foreach ($values as $id => $value) {
if ('N;' === $value) {
$values[$id] = null;
} elseif (is_string($value) && isset($value[2]) && ':' === $value[1]) {
$values[$id] = parent::unserialize($value);
}
}
return $values;
}
/**
* {@inheritdoc}
*/
protected function doHave($id)
{
return (bool) $this->doFetch(array($id));
}
/**
* {@inheritdoc}
*/
protected function doSave(array $values, $lifetime)
{
$ok = true;
$data = array($lifetime ? time() + $lifetime : PHP_INT_MAX, '');
$allowCompile = 'cli' !== PHP_SAPI || ini_get('opcache.enable_cli');
foreach ($values as $key => $value) {
if (null === $value || is_object($value)) {
$value = serialize($value);
} elseif (is_array($value)) {
$serialized = serialize($value);
$unserialized = parent::unserialize($serialized);
// Store arrays serialized if they contain any objects or references
if ($unserialized !== $value || (false !== strpos($serialized, ';R:') && preg_match('/;R:[1-9]/', $serialized))) {
$value = $serialized;
}
} elseif (is_string($value)) {
// Serialize strings if they could be confused with serialized objects or arrays
if ('N;' === $value || (isset($value[2]) && ':' === $value[1])) {
$value = serialize($value);
}
} elseif (!is_scalar($value)) {
throw new InvalidArgumentException(sprintf('Cache key "%s" has non-serializable %s value.', $key, gettype($value)));
}
$data[1] = $value;
$file = $this->getFile($key, true);
$ok = $this->write($file, '<?php return '.var_export($data, true).';') && $ok;
if ($allowCompile) {
@opcache_invalidate($file, true);
}
}
if (!$ok && !is_writable($this->directory)) {
throw new CacheException(sprintf('Cache directory is not writable (%s)', $this->directory));
}
return $ok;
}
}
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