php - Call parent function inside included/required file -

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i know if possible call function of parent file inside included file , how work.

example got that:

parent_file.php :

<?php      if ( ! class_exists( 'parent_class' ) ) {         class parent_class {              public $id = 10;                       public static function getinstance() {                 if ( ! ( self::$_instance instanceof self ) ) {                     self::$_instance = new self();                 }                  return self::$_instance;             }              public function init() {                             include 'child-file.php';                  $child = new child_class($id);                 $child->action();             }              public function edit($values_of_id) {                 return $values_of_id;             }      ?>


child_file.php :

<?php     if ( ! class_exists( 'child_class' ) ) {         class child_class {              private $id;              function __construct(){                  $params = func_get_args();                      if(!empty($params))                         foreach($params[0] $key => $param)                                 if(property_exists($this, $key))                                     $this->{$key} = $param;                      parent::__construct( array(                         'id'  => $this->id,                 ) );             }              public function action() {                 $url = 'http://myserver.com/edit_child.php?page='. $_request['page'] .'&action=select&id='. absint($this->id) ) );                 $action = '<a href='. $url .'>edit</a>'                           return $action;             }                 public function select_table_row() {                 if ( isset( $_get['action'] ) && !empty( $_get['action'] ) )                     $row = $_get['id'];                  $connection = new mysqli($servername, $username, $password, $dbname); // fictitious params                 $query = "select * mytable id = $row";                 $values_of_id = mysqli_query($connection, $query);                  // call function of parent_file.php                 edit($values_of_id);             }              $this->select_table_row();      ?>

this fictitious example , know code couldn't work this. want aim question , make thoughts visual , maybe more comprehensible.

important cannot include parent_file.php in child_file.php because child_class access multiple files.

i'm sorry if question asked. i'm limited in buzzwords topic , couldn't find this.

you have pass parent class object child class, this:

class parentclass {     private $str;      public function __construct($str){         $this->str = $str;     }      public function getchild() {         $obj = new childclass($this);         $obj->callparent("send");     }      public function send() {         echo $this->str;     } }  class childclass {     private $parent;      public function __construct($parent) {         $this->parent = $parent;     }      public function callparent($method) {         return $this->parent->$method();     } }  $obj = new parentclass("hello"); $obj->getchild(); // prints "hello"

demo: https://eval.in/403427


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