==============================
If statement
:language(php_only)
==============================

if ($a==0) {
  echo "bad";
} elseif ($a==3) {
  echo "bad";
} else {
  echo "good";
}

---

(program
  (if_statement
    condition: (parenthesized_expression (binary_expression
      left: (variable_name (name))
      right: (integer)))
    body: (compound_statement (echo_statement (encapsed_string (string_content))))
    alternative: (else_if_clause
      condition: (parenthesized_expression (binary_expression
        left: (variable_name (name))
        right: (integer)))
      body: (compound_statement (echo_statement (encapsed_string (string_content)))))
    alternative: (else_clause
      body: (compound_statement (echo_statement (encapsed_string (string_content)))))))

=========================================
Class
:language(php_only)
=========================================

class A {
    public function a() {}
    abstract public function b();
}

---

(program
  (class_declaration
    (name)
    (declaration_list
      (method_declaration
        (visibility_modifier)
        (name)
        (formal_parameters)
        (compound_statement)
      )
      (method_declaration
        (abstract_modifier)
        (visibility_modifier)
        (name)
        (formal_parameters)
      )
    )
  )
)
