| Error | Error class for PHP Sandboxes. |
| PHPSandbox | PHPSandbox class for PHP Sandboxes. |
| SandboxedString | Sandboxed string class for PHP Sandboxes. |
| SandboxWhitelistVisitor | SandboxWhitelister class for PHP Sandboxes. |
| ValidatorVisitor | Validator class for PHP Sandboxes. |
| WhitelistVisitor | Whitelister class for PHP Sandboxes. |