Introduction to PHP tutorial on object-oriented basic concept example analysis _php skills

This article illustrates the basic object-oriented concept of PHP. Share to everyone for your reference, specific as follows:

demo1.php

<?php
  //How to create a class format: Modifier class class Name {}
  //We go to create a computer class that can create objects (produce computer) class
  Computer {//class name first letter uppercase
  }
  //Create a computer out, that is, the object's declaration
  //FORMAT: variable = new class name ();
  The new Compuer () represents the process of instantiating (meaning creating an object)
  //$compuer 1 = new Compuer () This process is to give the address of the instantiated object to $compuer 1
  //$compuer 1 We can call it the application of the object
  $computer 1 = new Computer ();  This is the first computer we created
  $computer 2 = $computer 1;  This is the second computer we created
  Var_dump ($computer 1);
  Echo ' <br/> ';
  Var_dump ($computer 1);
? >

demo2.php

<?php
  header (' content-type:text/html; charset=utf-8; ');
Class Computer {////   field member declaration format: modifier variable name [=xxx];
Public   $_name = ' Association ';  Public means shared, outside class can access
//public   $_model = ' i7 ';
/////
Create an object to produce a computer-> indicating the point
//$computer 1 = new Computer ();
echo $computer 1-> _name;
$computer 1-> _name = ' dell ';
echo $computer 1-> _name;
  Class Computer {
    //field member declaration format: modifier variable name [=xxx];
    Public $_name; Public indicates a common, outside class can access the public
    $_model;
  Create an object that produces a computer-> that points to
  $computer 1 = new Computer ();
  Assign values to member fields
  $computer 1-> _name = ' Lenovo ';
  Value
  echo $computer 1-> _name;
? >

demo3.php

<?php
  header (' content-type:text/html; charset=utf-8; ');
  Class Computer {public
    $_name;//public represents a common, outside class can access the public
    $_model;
    Format of creation Method: Modifier function Method name () {}
    ///without modifiers, the default is public
    function _run () {
      echo ' I am the method of running ';
    }
  }
  Create an object that produces a computer-> that points to
  $computer 1 = new Computer ();
  $computer 1-> _run ();
? >

demo4.php

<?php
  header (' content-type:text/html; charset=utf-8; ');
Class Computer {////   field member declaration format: modifier variable name [=xxx];
Public   $_name = ' Association ';  Public means shared, outside class can access
//public   $_model = ' i7 ';
/////
Create an object to produce a computer-> indicating the point
//$computer 1 = new Computer ();
echo $computer 1-> _name;
$computer 1-> _name = ' dell ';
echo $computer 1-> _name;
  Class Computer {
    //field member declaration format: modifier variable name [=xxx];
    Public $_name; Public indicates a common, outside class can access the public
    $_model;
  Create an object that produces a computer-> that points to
  $computer 1 = new Computer ();
  Assign values to member fields
  $computer 1-> _name = ' Lenovo ';
  The value of
  //echo $computer 1-> _name;
  $computer 2 = $computer 1;
  echo $computer 2-> _name;
? >

demo5.php

<?php
  header (' content-type:text/html; charset=utf-8; ');
  Class Computer {public
    $_name;//public represents a common, outside class can access the public
    $_model;
    Format of creation Method: Modifier function Method name () {}
    ///without modifiers, the default is public
    function _run ($_who) {
      echo $_who. ' Is the method to run ';
    }
  //Create an object that produces a computer-> that points to
  $computer 1 = new Computer ();
  $computer 1-> _run (' One-stop building site ');
? >

demo6.php

<?php
  header (' content-type:text/html; charset=utf-8; ');
  Class Computer {
    //Create a constructor public
    function Computer () {
      echo ' I am constructor method ';
    }
  }
  As long as the instantiation, you can run the construction method
  //$computer = new computer ();
  New Computer ();
? >

demo7.php

<?php
  header (' content-type:text/html; charset=utf-8; ');
  Class Computer {
    //Create a constructor public
    function __construct () {
      echo ' I am the more advanced construction method ';
    }
  }
  As long as the instantiation, you can run the construction method
  //$computer = new computer ();
  New Computer ();
? >

demo8.php

<?php
  header (' content-type:text/html; charset=utf-8; ');
  Class Computer {
    //Create a constructor public
    function __construct () {
      echo ' I am the more advanced construction method ';
    }
    destructor Public
    function __destruct () {
      echo ' I am a destructor ';
    }
    Common method Public
    function _run () {
      echo ' I am normal method ';
    }
  }
  As long as the instantiation, you can run the construction method
  $computer = new computer ();
  $computer-> _run ();
? >

For more information about PHP interested readers can view the site topics: "PHP object-oriented Program Design Primer", "PHP Array" operation Techniques Daquan, "PHP Basic Grammar Introductory Course", "PHP operation and operator Usage Summary", "PHP Network Programming Skills Summary", " Summary of PHP string usage, Introduction to PHP+MYSQL database operations, and a summary of PHP common database operations Tips

I hope this article will help you with the PHP program design.