OOP - passing $fp to object???

[eismc7]

Hi, I've recently started coding and have a small question... Is it possible to pass a $fp (file pointer) into a function? (and how). The thing is that one of the block of data that has to be decoded has a length indicator on the 3rd byte of data within each byte... and I wrote the follwing function to extract the length :

function getLength($fp) {
fread ( $fp, 2);
$this->int_recordLength .= bindec(fread($fp, 1));
switch ($int_recordLength) {
case '16': $arr_fields['4']['bytes'] = '16';
break;
case '19':
$arr_fields['4']['bytes'] = '19';
break;
case '':
echo 'the file pointer was empty';
default:
break;};
return $this->arr_fields['4']['bytes'];
return $this->int_recordLength;
}

Now. Is it possible to pass $fp to a funtion to use as input, and how?

Any ideas? If you need more info, please shout... please see file attached! All code and the test file is contained within...

Regards,
/Arno

[getDizzle]

Since objects are not passed as reference in PHP < 5.0 you'll have to force it to pass as reference. Change:

function getLength($fp) {

to

function getLength(&$fp) {

I do this with database handles all the time. Should work for a file handle.

[eismc7]

I've change the file handle to (&$fp). I still get the following reposnse in my trace...

c:\program files\easyphp\www\RELATION.php :: Line 66 :: Function RELATION - Constructing a new RELATION object
[2003-02-17 14:50:44]
c:\program files\easyphp\www\RELATION.php :: Line 79 ::

Function getLength() - data fp :Resource id #1
the file pointer was empty[2003-02-17 14:50:44]
😕

regards,
Arno

[eismc7]

Problem solved...

The file pointer was returned all the time. The problem was that I, made a small error with the fseek () command and hence had problems.

So the new code looks like this...

 fseek($fp, 1, SEEK_CUR);
		$this->trace(__FILE__.' :: Line '.__LINE__.' :: Function getLength() - Current File pointer position is '.ftell($fp) ); 

    $int_ = hexdec ( bin2hex( fread($fp, 1) ) );
    $this->trace(__FILE__.' :: Line '.__LINE__.' :: Function getLength() - Read record length is '.$int_ ); 

    switch ($int_) {
        case '0':
            break;
        case '1':
            $this->arr_fields['4']['bytes'] = '5';
            $this->int_recordLength = 16;
            break;
        case '2':
            break;
        default:
            die( 'Invalid Relation Tag! - '.$int_ );
            break;
    }

    $this->trace(__FILE__.' :: Line '.__LINE__.' :: Function getLength() - Decoded Bytes length of the '.$this->arr_fields['4']['fieldname'].' field is '.$this->arr_fields['4']['bytes']); 

    $this->trace(__FILE__.' :: Line '.__LINE__.' :: Function getLength() - Current File pointer position is '.ftell($fp) ); 
    fseek($fp, -2, SEEK_CUR);
	$this->trace(__FILE__.' :: Line '.__LINE__.' :: Function getLength() - Current File pointer position is '.ftell($fp) );         

    return $this->int_recordLength;
}

Thanks for the help anyway... cheers