PHP类的用法

PHP类的用法

<? php
  $names  = fix_names("WILLIAM", "henry", "gatES" );
  echo   $names [0] . " " .  $names [1] . " " .  $names [2 ];

  function  fix_names( $n1 ,  $n2 ,  $n3  )
{
      $n1  =  ucfirst ( strtolower ( $n1  ));
      $n2  =  ucfirst ( strtolower ( $n2  ));
      $n3  =  ucfirst ( strtolower ( $n3  ));
      return   array ( $n1 ,  $n2 ,  $n3  );
}
 ?>

<? php
  $fp  =  fopen ("text.txt", 'wb' );

  for  ( $j  = 0 ;  $j  < 100 ; ++ $j  )
{
      $written  =  fwrite ( $fp , "data" );
      if  ( $written  ==  FALSE )  break  ;
}

  fclose ( $fp  );
 ?>


<? php
  $object  =  new   User;
  print_r ( $object  );

  class   User
{
      public   $name ,  $password  ;

      function   save_user()
    {
          echo  "Save User code goes here" ;
    }
}
 ?>

<? php
User :: pwd_string();

  class   User
{
      static   function   pwd_string()
    {
          echo  "Please enter your password" ;
    }
}
 ?>
<? php
  $object1  =  new   User();
  $object1 ->name = "Alice" ;
  echo   $object1 -> name;

  class   User {}
 ?>

<? php
  class   Test
{
      public   $name      = "Paul Smith";  //   Valid 
     public   $age       = 42;            //   Valid 
     public   $time      =  time ();        //   Invalid - calls a function 
     public   $score     =  $level  * 2;    //   Invalid - uses an expression 
 }
 ?>

<? php
  $temp  =  new   Test();
  echo  "Test A: " . Test:: $static_property  . "<br />" ;
  echo  "Test B: " .  $temp ->get_sp()        . "<br />" ;
  echo  "Test C: " .  $temp ->static_property . "<br />" ;
  class   Test
{
      static   $static_property  = "I'm static" ;
      function   get_sp()
    {
          return  self:: $static_property  ;
    }
}
 ?>

<? php
  $object            =  new   Subscriber;
  $object ->name     = "Fred" ;
  $object ->password = "pword" ;
  $object ->phone    = "012 345 6789" ;
  $object ->email    = "fred@bloggs.com" ;
  $object -> display();

  class   User
{
      public   $name ,  $password  ;

      function   save_user()
    {
          echo  "Save User code goes here" ;
    }
}

  class  Subscriber  extends   User
{
      public   $phone ,  $email  ;

      function   display()
    {
          echo  "Name:  " .  $this ->name     . "<br />" ;
          echo  "Pass:  " .  $this ->password . "<br />" ;
          echo  "Phone: " .  $this ->phone    . "<br />" ;
          echo  "Email: " .  $this -> email;
    }
}
 ?>

<? php
  $object  =  new   Son;
  $object -> test();
  $object -> test2();

  class   Dad
{
      function   test()
    {
          echo  "[Class Dad] I am your Father<br />" ;
    }
}

  class  Son  extends   Dad
{
      function   test() {
          echo  "[Class Son] I am Luke<br />" ;
    }    
      function   test2() {
        parent :: test();
    }
}
 ?>

<? php
  $object  =  new   Tiger();
  echo  "Tigers have...<br>" ;
  echo  "Fur: " .  $object ->fur . "<br />" ;
  echo  "Stripes: " .  $object -> stripes;

  class   Wildcat
{
      public   $fur ;  //   Wildcats have fur 

     function   __construct()
    {
          $this ->fur = "TRUE" ;
    }
}

  class  Tiger  extends   Wildcat
{
      public   $stripes ;  //   Tigers have stripes 

     function   __construct()
    {
        parent ::__construct();  //   Call parent constructor first 
         $this ->stripes = "TRUE" ;
    }
}
 ?>

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