Scheme PHP [Source Code] 
(define foo
  (lambda (a b c) 
    (body
    )))
                
function foo      |     $foo = function
($a, $b, $c)      |     ($a, $b, $c) use (&$foo)
{return           |     {return
    body;         |         body;
}                 |     };
[1], [2] 
(cond 
  (p1 e1)
  (p2 e2)
  ...
  (else en))
 

p1 ? e1 
: (p2 ? e2
  ...
  : en);
[3]
#t
#f 		TRUE
FALSE [4]
(or ...)
(and ...) 		... or ...
... and ... [5] 
(define lat?
  (lambda l
    (cond
      ((null? l) #t)
      ((atom? (car l)) (lat? (cdr l)))
      (else #f))))
 
function is_lat
($l)
{return 
    is_nulll($l) ? TRUE 
    : (is_atom(car($l)) ? is_lat(cdr($l))
      : FALSE);
}
 
(define member?
  (lambda (a lat)
    (cond
      ((null? lat) #f)
      (else (or (eq? (car lat) a)
              (member? a (cdr lat)))))))
 
function is_member
($a, $lat)
{return 
    is_nulll($l) ? FALSE 
    : is_eq($a, car($lat)) || is_member($a, cdr($lat));
}
  1. PHP User-defined functions.
  2. PHP Anonymous functions.
  3. PHP Ternary Operator.
  4. PHP Booleans.
  5. PHP Logical.