PHP - 如何使用get或post方法抓取外部URL并从中解析json数据？

Question

I have one server running with ZF2 and i have another client with PHP, now from client i need to read the json output via get or post method.

How to crawl external link form client and parse the JSON data to read the value of 'result' => $msg?

Client: http://www.other-end-user.com/view :

<?php
$customerid = $_GET['id'];
$id = substr('3' . rand(0,9999), 0-$length);
$default = "https://toogle.com?id={$id}";
$b = "<a href={$default} id={$customerid}button class={$customerid}button><img src=\"http://toogle.com/button.png\" /></a>";

#curl "http://www.external-analytics-site.com/ajax/json" | grep result
$live = true
if ($live){
  echo $b;
} else {
  echo "Live query failed";    
}


?>

Server (ZF2): http://www.external-analytics-site.com/ajax/json :

class AjaxController extends AbstractActionController {
    public function jsonAction(){
      $response = $this->getResponse();
      $msg = true;        
      $json = array(
        'result' => $msg,
        'module' => 'ajax',
        'data' => "test"
      );
      $response->setContent(Json::encode($json));
      return $response;            
      exit;
    }
}

Answer 1

you can use file-get-contents() to read from the server via GET

you can use json_decode to parse the result

Answer 2

You can use file_get_content to get json data .. but If you need content of page too..

 function crawl_page($url, $depth = 5)
{
    $saved = array();
    if (isset($saved[$url]) || $depth === 0) {
        return;
    }

    $saved[$url] = true;

    $dom = new DOMDocument('1.0');
    @$dom->loadHTMLFile($url);

    $anchors = $dom->getElementsByTagName('a');
    foreach ($anchors as $element) {
        $href = $element->getAttribute('href');
        if (0 !== strpos($href, 'http')) {
            $path = '/' . ltrim($href, '/');
            if (extension_loaded('http')) {
                $href = http_build_url($url, array('path' => $path));
            } else {
                $parts = parse_url($url);
                $href = $parts['scheme'] . '://';
                if (isset($parts['user']) && isset($parts['pass'])) {
                    $href .= $parts['user'] . ':' . $parts['pass'] . '@';
                }
                $href .= $parts['host'];
                if (isset($parts['port'])) {
                    $href .= ':' . $parts['port'];
                }
                $href .= $path;
            }
        }
        $this->crawl_page($href, $depth - 1);
    }
    echo "URL:",$url,PHP_EOL,"CONTENT:",PHP_EOL,$dom->saveHTML(),PHP_EOL,PHP_EOL;
}