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<?php function makeClass($outer) { return eval( sprintf( 'return new class { public $inner = %s; };', var_export($outer, true) ) ); } var_dump(makeClass(42)); var_dump(makeClass(['Hello', 'World']));
Output for git.master, git.master_jit, rfc.property-hooks
object(class@anonymous)#1 (1) { ["inner"]=> int(42) } object(class@anonymous)#1 (1) { ["inner"]=> array(2) { [0]=> string(5) "Hello" [1]=> string(5) "World" } }

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