? < PHP // the closure function passed as a parameter function Demo ( $ obj ) { $ obj ( 'I love PHP' ); } # pass a closure in the past Demo ( function ( $ TXT ) { echo $ TXT ;} ) ; ?>
? < PHP // the closure function passed as a parameter function Demo ( $ obj ) { $ obj ( 'I love PHP' ); } # pass a closure in the past Demo ( function ( $ TXT ) { echo $ TXT ;} ) ; ?>