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<?php
declare(strict_types=1);
namespace ProxyManager\Generator\Util;
use PackageVersions\Versions;
use function preg_match;
use function serialize;
use function sha1;
use function substr;
/**
* Utility class capable of generating
* valid class/property/method identifiers
* with a deterministic attached suffix,
* in order to prevent property name collisions
* and tampering from userland
*/
abstract class IdentifierSuffixer
{
public const VALID_IDENTIFIER_FORMAT = '/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]+$/';
public const DEFAULT_IDENTIFIER = 'g';
final private function __construct()
}
* Generates a valid unique identifier from the given name,
* with a suffix attached to it
public static function getIdentifier(string $name) : string
/** @var string|null $salt */
static $salt;
$salt = $salt ?? $salt = self::loadBaseHashSalt();
$suffix = substr(sha1($name . $salt), 0, 5);
if (! preg_match(self::VALID_IDENTIFIER_FORMAT, $name)) {
return self::DEFAULT_IDENTIFIER . $suffix;
return $name . $suffix;
private static function loadBaseHashSalt() : string
return sha1(serialize(Versions::VERSIONS));
Ocramius /
ProxyManager
