PHP: When is __destruct() called?

[Jenski]

Hi,
I'm I've been programming in PHP4 for a few years now and am slowly moving over to PHP5, I was wondering when developing a class when the __destruct() function is called? I have put all my closing connections in it, and tried to print to screen for confirmation but it doesn't print anything.

Any thoughts?

Thanks in advance

[jamiemac2005]

hmm, could you post some code? sorry i haven't used PHP in a while, but as a general programming concept you only destroy an instance of a class when you're done with it (e.g. once everything's been output)... but i don't know the situation so if you were to post code it would help.

Cheers,
Jamey

[Jenski]

PHP Code:

<?php 
class AD{

    private $host             = "ldap://xx";
    private $port             = "";                                //PHP: $port
    private $default_user    = "xx";
       //PHP: $bind_rdn
    private $default_password = "xx";                             //PHP: $bind_password
    private $base_dn        = "DC=xx,DC=xx,DC=xx";

    private $ous            = array('xx','xx','Techs','xx','Groups'); //OUs (who's parent is root in AD )in use for the Intranet 
    
    //The Intranet should only mess with these attributes of each object, none others
    private $attributes        = array('member');
    
    private $connection;    //PHP: $link_identifier
    private $bind_conn;
    private $debug;            //Array of Debugging messages
    

    /*
        Constructor- creates a new instance of the AD class
        Opens Connection to LDAP
        Binds a default user used for Searching etc
    */
    public function __construct() {
        $this->debug[]    = "Constructor Called";
        $this->open_connection();
        $this->bind_default_user();
    }
    
    /*
        Destructor
        Makes sure connection is closed if called
    */
    public function __destruct(){
        $this->debug[]    = "Destructor Called";
        $this->close_connection();
    }
    
    /*
        Open LDAP Connection 
    */
    private function open_connection(){
        if(empty($this->port)){
            $this->connection = ldap_connect($this->host) or die("Could not connect to LDAP Host");
            $this->debug[]    = "LDAP Connect successful";
        }else{
            $this->connection = ldap_connect($this->host, $this->port) or die("Could not connect to LDAP Host");
            $this->debug[]    = "LDAP Connect successful";
        }
    }
    
    /* 
        Creates Default Active Directory Bind
    */
    private function bind_default_user(){
         $this->bind_conn = ldap_bind($this->connection, $this->default_user, $this->default_password);
         if ($this->bind_conn) {
            $this->debug[]    = "LDAP Default User bind successful";    
        } else {
            $this->debug[] = "ERROR: LDAP Default User bind unsuccessful";
        }
    }
    
    /* 
        Closes Active Directory Connection
    */
    private function close_connection(){
        ldap_close($this->connection);
        $this->debug[]    = "LDAP Close connection called";    
    }
    /*
        Debugging Function
        Displays Errors/Messages throughout runtime of executing code
    */
    public function debugging(){
        for($i=0;$i<sizeof($this->debug);$i++){
            echo $this->debug[$i] . '<br/>';
        }
    }
}
?>

[Jenski]

Sounds as though it should be done automatically, but for some reason it doesn't?

http://uk.php.net/manual/en/language.oop5.decon.php