Php/docs/luasandbox.examples-basic
Basic usage for LuaSandbox
Once you've compiled PHP with LuaSandbox support, you can begin using LuaSandbox to safely run user-provided Lua code.
Example #1 Execute some Lua code
<?php$sandbox = new LuaSandbox;$sandbox->setMemoryLimit( 50 * 1024 * 1024 );$sandbox->setCPULimit( 10 );// Register some functions in the Lua environmentfunction frobnosticate( $v ) { return [ $v + 42 ];}$sandbox->registerLibrary( 'php', [ 'frobnosticate' => 'frobnosticate', 'output' => function ( $string ) { echo "$string\n"; }, 'error' => function () { throw new LuaSandboxRuntimeError( "Something is wrong" ); }] );// Execute some Lua code, including callbacks into PHP and into Lua$luaCode = <<<EOFphp.output( "Hello, world" );return "Hi", function ( v ) return php.frobnosticate( v + 200 )endEOF;list( $hi, $frob ) = $sandbox->loadString( $luaCode )->call();assert( $frob->call( 4000 ) === [ 4242 ] );// PHP-thrown LuaSandboxRuntimeError exceptions can be caught inside Lualist( $ok, $message ) = $sandbox->loadString( 'return pcall( php.error )' )->call();assert( !$ok );assert( $message === 'Something is wrong' );?>
