从外部站点获取警报响应

Question

我正在尝试找出从该网站获得回复的方法： https://www.primarycare.nhs.uk/publicfn/catchment.aspx?oc=P91012&h=600&w=800&if=0

oc=P91012 - 这是实践标识符。

然后我们有一个邮政编码字段，用户可以在其中检查他们是否位于服务区域

网站会发出 JavaScript 警报，通知用户是否位于服务区域。

是否可以发送 PHP Curl 请求，将邮政编码发送到此网站并检查邮政编码是否在服务范围内并将响应发送回我的网站？

<?php
$POSTurl = 'https://www.primarycare.nhs.uk/publicfn/geocode.ashx';
$fields = array(
'postcode' => urlencode('M41 0UX'),
);

foreach($fields as $key=>$value) { $fields_string .= $key.'='.$value.'&'; }
rtrim($fields_string, '&');

$ch = curl_init();
curl_setopt($ch,CURLOPT_URL, $POSTurl );
curl_setopt($ch,CURLOPT_POST, count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS, $fields_string);
$result = curl_exec($ch);



$url = 'https://www.primarycare.nhs.uk/publicfn/catchment.aspx?oc=P91012&h=600&w=800&if=0';
$ch = curl_init();
$result = curl_exec($ch);


curl_close($ch);

?>

Answer 1

所以，这里是：

问题在于，您之所以无法选择正确的响应，是因为所有有效坐标都在 NHS 的源代码中。我删除了不需要的代码，并通过邮政编码与列表中的现有坐标检查坐标。请记住，如果原始源列表中发生任何更改，您也需要更新。

此外，从技术上讲，这段代码并非 100% 正确，您可能会花费更多时间来使其更符合您的需求。正如我在评论中所说，这将起到一点作用。

只需复制/粘贴到您的 php 文件中，然后刷新页面。

代码：

<?php
$postcode = 'M41 0UX';
$postcode = urlencode($postcode);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://www.primarycare.nhs.uk/publicfn/geocode.ashx");
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "PostCode=".$postcode);
curl_setopt($ch, CURLOPT_POST, 1);
$result = curl_exec($ch);
if (curl_errno($ch)) {
echo 'Error:' . curl_error($ch);
}
else {
echo $result;
echo '<input id="checker" type="hidden" value="'.$result.'" />';
?>
<script src="http://code.jquery.com/jquery-latest.min.js" type="text/javascript"></script>
<script src="https://www.primarycare.nhs.uk/Private/js/gpos.js" type="text/javascript"></script>
<script type="text/javascript" src="https://maps-api-ssl.google.com/maps/api/js?v=3.7&sensor=false"></script>
<script type="text/javascript">
var point;
var poly1=[{x:53.45801,y: -2.33768},{x:53.46046,y: -2.32996},{x:53.45882,y: -2.32447},{x:53.45637,y: -2.3188},{x:53.45351,y: -2.31709},{x:53.44932,y: -2.31468},{x:53.44523,y: -2.31365},{x:53.44216,y: -2.31279},{x:53.43961,y: -2.31417},{x:53.43858,y: -2.31657},{x:53.4394,y: -2.32155},{x:53.44001,y: -2.32893},{x:53.44145,y: -2.33408},{x:53.44329,y: -2.33751},{x:53.44053,y: -2.33648},{x:53.4395,y: -2.34095},{x:53.43838,y: -2.34352},{x:53.44083,y: -2.34627},{x:53.44022,y: -2.35107},{x:53.43899,y: -2.35193},{x:53.43787,y: -2.35107},{x:53.43797,y: -2.35399},{x:53.43715,y: -2.35622},{x:53.43562,y: -2.3576},{x:53.43592,y: -2.35949},{x:53.43449,y: -2.36103},{x:53.43275,y: -2.36017},{x:53.43153,y: -2.36137},{x:53.43275,y: -2.36343},{x:53.43183,y: -2.36515},{x:53.43347,y: -2.36738},{x:53.4349,y: -2.36704},{x:53.43664,y: -2.36738},{x:53.43736,y: -2.3679},{x:53.43705,y: -2.37167},{x:53.43725,y: -2.37459},{x:53.43592,y: -2.37511},{x:53.43664,y: -2.377},{x:53.43623,y: -2.37974},{x:53.43787,y: -2.38077},{x:53.43858,y: -2.37888},{x:53.4395,y: -2.3782},{x:53.43981,y: -2.38197},{x:53.4392,y: -2.38403},{x:53.43797,y: -2.38352},{x:53.43848,y: -2.38609},{x:53.4395,y: -2.38592},{x:53.44073,y: -2.3842},{x:53.44063,y: -2.38747},{x:53.44001,y: -2.3909},{x:53.43776,y: -2.39193},{x:53.43603,y: -2.39141},{x:53.4348,y: -2.38884},{x:53.43255,y: -2.39038},{x:53.43388,y: -2.39553},{x:53.43459,y: -2.39914},{x:53.43684,y: -2.40051},{x:53.43766,y: -2.40223},{x:53.4394,y: -2.4012},{x:53.44012,y: -2.40429},{x:53.4394,y: -2.40824},{x:53.43868,y: -2.41219},{x:53.44533,y: -2.40807},{x:53.4485,y: -2.40669},{x:53.4529,y: -2.40309},{x:53.45545,y: -2.39965},{x:53.45995,y: -2.39313},{x:53.46363,y: -2.38438},{x:53.46608,y: -2.37614},{x:53.46894,y: -2.3703},{x:53.46588,y: -2.36532},{x:53.46455,y: -2.35931},{x:53.46281,y: -2.35296},{x:53.46158,y: -2.3461},{x:53.45995,y: -2.34198},{x:53.4577,y: -2.33974}];

function isPointInPoly(poly, pt){
for(var c = false, i = -1, l = poly.length, j = l - 1; ++i < l; j = i)
((poly[i].y <= pt.y && pt.y < poly[j].y) || (poly[j].y <= pt.y && pt.y < poly[i].y))
&& (pt.x < (poly[j].x - poly[i].x) * (pt.y - poly[i].y) / (poly[j].y - poly[i].y) + poly[i].x)
&& (c = !c);
return c;
};

function ispostcodein(postcode) {
var ok = 1;
if (ok == 1) {
var responseText = $('#checker').val();
point = responseText.split(';');
}
var incatch = 0;
if (isPointInPoly(poly1, {x: point[0],y: point[1]})) { incatch = 1 };
if (incatch==0) {  
alert("We're sorry, but your postcode is outside the catchment area for PRIMROSE AVENUE SURGERY.");
}
else {
alert("Your postcode is in the catchment area for PRIMROSE AVENUE SURGERY. You are able to register with this practice.");
}                         
}

ispostcodein('<?= $result; ?>');
</script>
<?php
}
curl_close($ch);
?>