I believe you have two issues and that my code below will solve them. My code also uses a few different methodologies to avoid manual assembly of JSON, URL query strings, etc. (see lines 3-41 of the provided code)
Issues
- You are not encoding the query parameter values - can be fixed with
urlencode of the param values, but I prefer http_build_query for reasons noted in my introductory paragraph.
- You are not sending a User Agent (UA) header (The distant end seems to require a value in this header but doesn't care what it is. Having received a request with a UA I think it must whitelist the IP for a few moments as it doesn't seem to require it on every request. I would just send it for every request, though, as it doesn't hurt and you never know when your whitelist will timeout). See lines 50-53 for what I set in this script and some options you have
Replacement Code
With explanatory comments
<?php
/*
* The data that will be serialized as JSON and used as the value of the
* `query` parameter in your URL query string
*/
$search_query_data = [
"channel" => "buy",
"filters" => [
"propertyType" => [
"house",
],
"surroundingSuburbs" => "False",
"excludeTier2" => "true",
"geoPrecision" => "address",
"localities" => [
[
"searchLocation" => "Blacktown, NSW 2148",
],
],
],
"pageSize" => "100",
];
/*
* Serialize the data as JSON
*/
$search_query_json = json_encode($search_query_data);
/*
* Make a URL query string with a param named `query` that will be set as the
* JSON from above
*/
$url_query_string = http_build_query([
'query' => $search_query_json,
]);
/*
* Assemble the URL to which we'll make the request, and set it into CURL
*/
$request_url = 'https://services.realestate.com.au/services/listings/search?' . $url_query_string;
$ch = curl_init($request_url);
/*
* Set some CURL options
*/
// Have `curl_exec()` return the transfer as a string instead of outputting
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// Set a user agent header
curl_setopt($ch, CURLOPT_USERAGENT, 'H.H\'s PHP CURL script');
// If you want to spoof, say, Safari instead, remove the last line and uncomment the next:
//curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.1 Safari/603.1.30');
/*
* Get the response and close out the CURL handle
*/
$response_body = curl_exec($ch);
curl_close($ch);
/*
* Unserialize the response body JSON
*/
$search_results = json_decode($response_body);
Finally, as an aside, I would recommend you stop using CURL directly and start using a library to abstract away some of the HTTP interactions and to make your requests/responses start to fit better with "standard" (PSR) interfaces. Since you're using Laravel, you're already in an ecosystem with Composer, so you could easily install something like Guzzle.
