问题
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";
$rets->Disconnect();
回答1:
I modified your while loop that processes each record to also get the photos for that record. I also tested this on a RETS server.
while ($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));
回答2:
What if the last parameter of GetObject is "0" :
$photos = $rets->GetObject("Property", "Photo", $record[$fo], "*", 1);
in this case "1" is for retreiving the location. some servers this is switched off and return the actual image I believe - that would require a different method.
来源：https://stackoverflow.com/questions/16990495/phrets-using-php-to-download-real-estate-listing-photos