[firestar]

I am having problem with my search engine. It seems to work fine
in PHP 4 but not in PHP5. The error was:

Warning: unpack() [function.unpack]: Type N: not enough input, need 4, have 1 in /var/www/vhosts/newsweekshowcase.com/httpdocs/newsweekshowcase/site-common-files/index-template-b(59) : eval()'d code on line 174
No fread2


Below are some of the codes:

PHP Code:

for ($j=0; $j<count($query_arr); $j++) {
    $query = $query_arr[$j];
    $allres[$j] = array();

    if ($INDEXING_SCHEME == 1) {
        $substring_length = strlen($query);
    } else {
        $substring_length = 4;
    }
    $hash_value = abs(hashnew(substr($query,0,$substring_length)) &#37; $HASHSIZE);
    
    
    
    fseek($fp_HASH,$hash_value*4,0);
    $dum = fread($fp_HASH,4) or die("No fread");
    $dum = unpack("Ndum", $dum);
    fseek($fp_HASHWORDS,$dum['dum'],0);
    $dum = fread($fp_HASHWORDS,4);
    $dum1 = unpack("Ndum", $dum);
    
    
    
    for ($i=0; $i<$dum1['dum']; $i++) {
        $dum = fread($fp_HASHWORDS,8) or die("No fread2"); 

Why this error appear?Please help!!!

[DAL]

Maybe it has something to do with this;

Caution

Note that PHP internally stores integral values as signed. If you unpack a large unsigned long and it is of the same size as PHP internally stored values the result will be a negative number even though unsigned unpacking was specified.

quoted from php.net

I see the error for the last "No fread2" was outputted and the base for the fread has changed... maybe it's got something to do with that. (guess) check out the comments as others have wrote functions to rewrite some of these unsigned to signed etc...

[firestar]

any link that got sample codes?

[DAL]

What appart from the one I provided?