how to write data to file in php

[Guest]

consider i have a class

class STORE
{
public $string;
public $int;
public $boo;
} 

now i want to write the same
for example

 
$obj=new STORE;
$obj->string="some string";
$obj->int=100;
$obj->bool=true;
 
$stream=fopen("file.dat","wb");
fwrite((char*)&$obj,sizeof($obj)); /*this is a c++ code line,i want to convert the code into php */
fclose($stream); 

i get an error "cannot convert obj. to string" is there any other way to write objects to a file as we do in c++

[GumSlone]

you can find a tutorial how to use the file write here:

http://www.tizag.com/phpT/filewrite.php

[Guest]

i already know how to write data to a file(php's inbuilt functions only supports string and not objects)
the thing that i want to know is how to write an instance of a class to a file

[Guest]

never mind i created my own class which i just posted in the Scripts forum named as "Fstream.php"