PHP array array by reference

Question

• What is the correct way to use array_splicein PHP? The function header clearly states:

  array_splice ( array &$input , int $offset...therefore it should accept the link as the first argument.

  However string

  array_push(&$this->contextsIds, $contextId);

  Triggers an outdated error : call timed call is outdated on ... line 132

• How to return an array reference? I have:

  public function &getContextsIds() {
      return is_array($this->contextsIds) ? $this->contextsIds : array();    
  }
  

  but he says note. Only links to links should be returned by link

Answer 1

• The function is already declared to receive the link ( array &$input); You will not need it &when calling a function. Just name it like this:

  array_push($this->contextsIds, $contextId);
  

• , , . : ? : , array() , - . , , :

  return $this->contextIds;
  

Answer 2

, , :

public function &getContextsIds() {
    return is_array($this->contextsIds) ? $this->contextsIds : array();    
}

, , , , , , , - ..