Class problem I'm stumped

[revron]

I have been working with a cURL script to access the UPS Online Tools. As a standalone php.file the script runs perfectly, but I need for it to be used within a function.

When the script is run as a function it returns the following error:

Fatal error: Cannot instantiate non-existent class: xml in c:\phpdev\www\sapi_sc\shipping_fns.php on line 52

What it is choking on on line 52 is $obj = new xml($xyz,"xml"); Yet, as a standalone file everything is fine.

The following is the xml parser part of the code

class xml_container {
function store($k,$v) {
$this->{$k}[] = $v;
}
}

class xml {
var $current_tag=array();
var $xml_parser;
var $Version = 1.0;
var $tagtracker = array();

function startElement($parser, $name, $attrs) { 
    array_push($this->current_tag, $name); 
    $curtag = implode("_",$this->current_tag); 

    if(isset($this->tagtracker["$curtag"])) { 
        $this->tagtracker["$curtag"]++; 
    } else { 
        $this->tagtracker["$curtag"]=0; 
    } 

    if(count($attrs)>0) { 
        $j = $this->tagtracker["$curtag"]; 
        if(!$j) $j = 0; 

        if(!is_object($GLOBALS[$this->identifier]["$curtag"][$j])) { 
            $GLOBALS[$this->identifier]["$curtag"][$j] = new xml_container; 
        } 

        $GLOBALS[$this->identifier]["$curtag"][$j]->store("attributes",$attrs); 
    } 
} 

function endElement($parser, $name) { 
    $curtag = implode("_",$this->current_tag);     // piece together tag 

    if(!$this->tagdata["$curtag"]) { 
        $popped = array_pop($this->current_tag); // or else we screw up where we are 
        return;     // if we have no data for the tag 
    } else { 
        $TD = $this->tagdata["$curtag"]; 
        unset($this->tagdata["$curtag"]); 
    } 

    $popped = array_pop($this->current_tag); 

    if(sizeof($this->current_tag) == 0) return;     // if we aren't in a tag 

    $curtag = implode("_",$this->current_tag);     // piece together tag 
                            // this time for the arrays 

    $j = $this->tagtracker["$curtag"]; 
    if(!$j) $j = 0; 

    if(!is_object($GLOBALS[$this->identifier]["$curtag"][$j])) { 
        $GLOBALS[$this->identifier]["$curtag"][$j] = new xml_container; 
    } 

    $GLOBALS[$this->identifier]["$curtag"][$j]->store($name,$TD); #$this->tagdata["$curtag"]); 
    unset($TD); 
    return TRUE; 
} 

function characterData($parser, $cdata) { 
    $curtag = implode("_",$this->current_tag); // piece together tag          
    $this->tagdata["$curtag"] .= $cdata; 
} 

function xml($data,$identifier='xml') {    
    $this->identifier = $identifier; 

    // create parser object 
    $this->xml_parser = xml_parser_create(); 

    // set up some options and handlers 
    xml_set_object($this->xml_parser,$this); 
    xml_parser_set_option($this->xml_parser,XML_OPTION_CASE_FOLDING,0); 
    xml_set_element_handler($this->xml_parser, "startElement", "endElement"); 
    xml_set_character_data_handler($this->xml_parser, "characterData"); 

    if (!xml_parse($this->xml_parser, $data, TRUE)) { 
        sprintf("XML error: %s at line %d", 
        xml_error_string(xml_get_error_code($this->xml_parser)), 
        xml_get_current_line_number($this->xml_parser)); 
    } 

    // we are done with the parser, so let's free it 
    xml_parser_free($this->xml_parser); 

}  // end constructor: function xml() 

}
}

?>

[ahundiak]

The error message indicates that the xml class has not been loaded yet. Is the xml class in the same file? If not, are you sure it's getting included? Are you using PHP5? If so you should be aware that PHP5 requires the class to be defined before it's used even if the class is defined in the same file.

[revron]

I am running php 4.2.3

The class is called from the ups access, but I would assume (obviously wrongly) that if the script runs as a standalone php file, it should also run as a function.

Am I missing something in my perception?

[ahundiak]

Please explain what you mean by "run as a function"? Maybe you can post lines 1-60 of the script.

Also, your posted code seems to have an extra brace at the end. Are you trying to put the class definitations themselves into a function? That won't work. Need something like:

class xml
{
....
}
function do_something()
{
$xml =& new xml();
}

[revron]

The script in its entirety--- It runs perfectly as a standalone file this way, but I ulitmately want to run it as a function to return total shipping charges.

<?

//create values for the variables
$from_zip="18436";
$to_zip="78708";
$weight="16";
$service_code="03";

// Ups Site Registration Codes
$userid = "###";
$userid_pass = "##";
$access_key = "####";
$activity = "activity";

/*
The following variables must be passed.
$from_zip - $to_zip - $weight

Pkg size is optional with the defaults set in
the if statements below. Easiest to modify these or weight
to adjust end price.

If package size is to be used the following variables must contain values $length - $width - $height
*/

if (!$length)
$length = 10;
if (!$width)
$width = 10;
if (!$height)
$height = 10;
if (!$weight)
$weight = 10;

$y = "<?xml version=\"1.0\"?><AccessRequest xml:lang=\"en-US\"><AccessLicenseNumber>$access_key</AccessLicenseNumber><UserId>$userid</UserId><Password>$userid_pass</Password></AccessRequest><?xml version=\"1.0\"?><RatingServiceSelectionRequest xml:lang=\"en-US\"><Request><TransactionReference><CustomerContext>Bare Bones Rate Request</CustomerContext><XpciVersion>1.0</XpciVersion></TransactionReference><RequestAction>Rate</RequestAction><RequestOption>Rate</RequestOption></Request><PickupType><Code>01</Code></PickupType><Shipment><Shipper><Address><PostalCode>$from_zip</PostalCode><CountryCode>US</CountryCode></Address></Shipper><ShipTo><Address><PostalCode>$to_zip</PostalCode><CountryCode>US</CountryCode></Address></ShipTo><ShipFrom><Address><PostalCode>$from_zip</PostalCode><CountryCode>US</CountryCode></Address></ShipFrom><Service><Code>$service_code</Code></Service><Package><PackagingType><Code>02</Code></PackagingType><Dimensions><UnitOfMeasurement><Code>IN</Code></UnitOfMeasurement><Length>$length</Length><Width>$width</Width><Height>$height</Height></Dimensions><PackageWeight><UnitOfMeasurement><Code>LBS</Code></UnitOfMeasurement><Weight>$weight</Weight></PackageWeight></Package></Shipment></RatingServiceSelectionRequest>";

// cURL ENGINE
$ch = curl_init(); /// initialize a cURL session
curl_setopt ($ch, CURLOPT_URL,"https://www.ups.com/ups.app/xml/Rate");
//CURLOPT_URL,"https://wwwcie.ups.com/ups.app/xml/Rate");
curl_setopt ($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "$y");
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
$xyz = curl_exec ($ch);
curl_close ($ch);

$obj = new xml($xyz,"xml");

//a 7.5% fuel surcharge is added to the rate below

if (!$i)
{
$i = '0';
$shipping = $xml["RatingServiceSelectionResponse_RatedShipment_RatedPackage_TotalCharges"][0]->MonetaryValue[$i]*1.075. "\n";

echo "UPS Shipping To $to_zip = $".number_format($shipping,2)."<br>Rates include a 7.5% fuel surcharge currently added by UPS<br><br>";

$i++;

}

//Below is the xml parser code

class xml_container {
function store($k,$v) {
$this->{$k}[] = $v;
}
}

class xml {
var $current_tag=array();
var $xml_parser;
var $Version = 1.0;
var $tagtracker = array();

function startElement($parser, $name, $attrs) { 
    array_push($this->current_tag, $name); 
    $curtag = implode("_",$this->current_tag); 

    if(isset($this->tagtracker["$curtag"])) { 
        $this->tagtracker["$curtag"]++; 
    } else { 
        $this->tagtracker["$curtag"]=0; 
    } 

    if(count($attrs)>0) { 
        $j = $this->tagtracker["$curtag"]; 
        if(!$j) $j = 0; 

        if(!is_object($GLOBALS[$this->identifier]["$curtag"][$j])) { 
            $GLOBALS[$this->identifier]["$curtag"][$j] = new xml_container; 
        } 

        $GLOBALS[$this->identifier]["$curtag"][$j]->store("attributes",$attrs); 
    } 
} 

function endElement($parser, $name) { 
    $curtag = implode("_",$this->current_tag);     // piece together tag 

    if(!$this->tagdata["$curtag"]) { 
        $popped = array_pop($this->current_tag); // or else we screw up where we are 
        return;     // if we have no data for the tag 
    } else { 
        $TD = $this->tagdata["$curtag"]; 
        unset($this->tagdata["$curtag"]); 
    } 

    $popped = array_pop($this->current_tag); 

    if(sizeof($this->current_tag) == 0) return;     // if we aren't in a tag 

    $curtag = implode("_",$this->current_tag);     // piece together tag 
                            // this time for the arrays 

    $j = $this->tagtracker["$curtag"]; 
    if(!$j) $j = 0; 

    if(!is_object($GLOBALS[$this->identifier]["$curtag"][$j])) { 
        $GLOBALS[$this->identifier]["$curtag"][$j] = new xml_container; 
    } 

    $GLOBALS[$this->identifier]["$curtag"][$j]->store($name,$TD); #$this->tagdata["$curtag"]); 
    unset($TD); 
    return TRUE; 
} 

function characterData($parser, $cdata) { 
    $curtag = implode("_",$this->current_tag); // piece together tag          
    $this->tagdata["$curtag"] .= $cdata; 
} 

function xml($data,$identifier='xml') {    
    $this->identifier = $identifier; 

    // create parser object 
    $this->xml_parser = xml_parser_create(); 

    // set up some options and handlers 
    xml_set_object($this->xml_parser,$this); 
    xml_parser_set_option($this->xml_parser,XML_OPTION_CASE_FOLDING,0); 
    xml_set_element_handler($this->xml_parser, "startElement", "endElement"); 
    xml_set_character_data_handler($this->xml_parser, "characterData"); 

    if (!xml_parse($this->xml_parser, $data, TRUE)) { 
        sprintf("XML error: %s at line %d", 
        xml_error_string(xml_get_error_code($this->xml_parser)), 
        xml_get_current_line_number($this->xml_parser)); 
    } 

    // we are done with the parser, so let's free it 
    xml_parser_free($this->xml_parser); 

}  // end constructor: function xml() 

}

?>