AME AME - 6 months ago 129
PHP Question

PHRets: Using PHP to download real estate listing photos

Am a trying to create a PHP (PHrets) script that downloads all real estate listing information from a specific area and saves all of the listings data (CSV file and photos) on my web server.

Note: A single listing may have up to 20 photos.

I am using PHrets to retrieve MLS listing data and it works great for creating a CSV of data. However, I would like to modify this code to loop through each listing's photos and download them onto my web server with the following name convention: MLSID-PHOTOID.

The error below is coming from the GetObject loop at the end of the code:
ERROR Message: HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request.

Thanks in advance!

<?php

$rets_login_url = "http://maxebrdi.rets.fnismls.com/Rets/FNISRETS.aspx/MAXEBRDI/login?&rets-version=rets/1.5";
$rets_username = "MyUser";
$rets_password = "MyPass";

// use http://retsmd.com to help determine the SystemName of the DateTime field which
// designates when a record was last modified
$rets_status_field = "L_StatusCatID";
$rets_city_field = "L_City";

// use http://retsmd.com to help determine the names of the classes you want to pull.
// these might be something like RE_1, RES, RESI, 1, etc.
//"RE_1"
$property_classes = array("LR_5");

// DateTime which is used to determine how far back to retrieve records.
// using a really old date so we can get everything
$listing_status = 1;

$listing_city = "OAKLAND";

//////////////////////////////

require_once("phrets.php");

// start rets connection
$rets = new phRETS;

echo "+ Connecting to {$rets_login_url} as {$rets_username}<br>\n";
$connect = $rets->Connect($rets_login_url, $rets_username, $rets_password);

if ($connect) {
echo " + Connected<br>\n";
}
else {
echo " + Not connected:<br>\n";
print_r($rets->Error());
exit;
}

foreach ($property_classes as $class) {

echo "+ Property:{$class}<br>\n";

$file_name = strtolower("property_{$class}.csv");
$fh = fopen($file_name, "w+");

$maxrows = true;
$offset = 1;
$limit = 1000;
$fields_order = array();

while ($maxrows) {

$query = "({$rets_status_field}={$listing_status}),({$rets_city_field}={$listing_city})";

// run RETS search
echo " + Query: {$query} Limit: {$limit} Offset: {$offset}<br>\n";
$search = $rets->SearchQuery("Property", $class, $query, array("Limit" => $limit, "Offset" => $offset, "Format" => "COMPACT", "Select" => "L_ListingID,L_Class,L_Type_,L_Status,L_AskingPrice,L_Keyword2,L_Keyword3,L_Keyword4,L_SquareFeet,L_Remarks,L_Address,L_City,L_State,LO1_OrganizationName,LA1_AgentLicenseID,LA1_UserFirstName,LA1_UserLastName,L_PictureCount", "Count" => 1));

if ($rets->NumRows() > 0) {

if ($offset == 1) {
// print filename headers as first line
$fields_order = $rets->SearchGetFields($search);
fputcsv($fh, $fields_order);
}

// process results
while ($record = $rets->FetchRow($search)) {
$this_record = array();
foreach ($fields_order as $fo) {
$this_record[] = $record[$fo];
}
fputcsv($fh, $this_record);
}

$offset = ($offset + $rets->NumRows());

}

$maxrows = $rets->IsMaxrowsReached();
echo " + Total found: {$rets->TotalRecordsFound()}<br>\n";

$rets->FreeResult($search);
}

fclose($fh);
echo " - done<br>\n";

}

/*
//This code needs to be fixed. Not sure how to include the listing array correctly.
$photos = $rets->GetObject("Property", "Photo", $record[ListingID], "*", 1);
foreach ($photos as $photo) {
$listing = $photo['Content-ID'];
$number = $photo['Object-ID'];

if ($photo['Success'] == true) {
echo "{$listing}'s #{$number} photo is at {$photo['Location']}\n";
file_put_contents("photos/{$photo['Content-ID']}-{$photo['Object-ID']}.jpg",
$photo['Data']);
}
else {
echo "Error ({$photo['Content-ID']}-{$photo['Object-ID']}
}
}

//ERROR Message: HTTP Error 500 (Internal Server Error): An unexpected condition was //encountered while the server was attempting to fulfill the request.
*/
echo "+ Disconnecting<br>\n";
$rets->Disconnect();

Answer

I modified your while loop that processes each record to also get the photos for that record. I also tested this on a RETS server.

while ($record = $rets->FetchRow($search)) {
        $this_record = array();
        foreach ($fields_order as $fo) {

        if ($fo == 'L_ListingID') {

            $photos = $rets->GetObject("Property", "Photo", $record[$fo], "*", 1);

            foreach ($photos as $photo) {

                if ($photo['Success'] == true) {

                     file_put_contents("photos/{$photo['Content-ID']}-{$photo['Object-ID']}.jpg", $photo['Data']);   

                }   
            }
        }
      $this_record[] = $record[$fo];
    }                           
fputcsv($fh, $this_record);    
}

One thing I found is you have ListingID on this line:

$photos = $rets->GetObject("Property", "Photo", $record[ListingID], "*", 1);

But then in your search query you refer to ListingID as L_ListingID. Maybe the above line should have L_ListingID.

$search = $rets->SearchQuery("Property", $class, $query, array("Limit" => $limit, "Offset" => $offset, "Format" => "COMPACT", "Select" => "L_ListingID,L_Class,L_Type_,L_Status,L_AskingPrice,L_Keyword2,L_Keyword3,L_Keyword4,L_SquareFeet,L_Remarks,L_Address,L_City,L_State,LO1_OrganizationName,LA1_AgentLicenseID,LA1_UserFirstName,LA1_UserLastName,L_PictureCount", "Count" => 1));