runkit7_function_remove Remove a function definition &reftitle.description; boolrunkit7_function_remove stringfunction_name ¬e.runkit.internal-override; &reftitle.parameters; function_name Name of the function to be deleted &reftitle.returnvalues; &return.success; &reftitle.seealso; runkit7_function_add runkit7_function_copy runkit7_function_redefine runkit7_function_rename