4 kinds of commonly used crawl network data methods in PHP _php tips

The name of this section is Fsockopen,curl and file_get_contents, specifically to explore some of the three ways of network data input and output of some of the summaries. There has been a lot of talk about Fsockopen, and the following starts with the other. Here's a quick list of some common ways to crawl network data.

1. Get the content with file_get_contents:

$url = ' http://localhost/test2.php ';
$html = file_get_contents ($url);
Echo $html;

2. Open the URL with fopen to get the content

$url = ' http://localhost/test2.php ';
$fp = fopen ($url, ' R ');
Stream_get_meta_data ($FP);
$result = ';
while (!feof ($fp))
{
  $result. = Fgets ($fp, 1024);
}
echo "URL body: $result";
Fclose ($FP);

3. Use the File_get_contents function to get the URL in post mode

$data = Array (
 ' foo ' => ' Bar '),
 ' baz ' => ' boom ',
 ' site ' => ' www.jb51.net ',
 ' name ' => ' Nowa Magic ');
 
$data = Http_build_query ($data);

$postdata = Http_build_query ($data);
$options = Array ('
 http ' => Array (
 ' method ' => ' POST ',
 ' header ' => ' content-type:application/ X-www-form-urlencoded ',
 ' content ' => $data
 //' timeout ' => 60 * 60//Timeout (unit: s))
);

$url = "http://localhost/test2.php";
$context = Stream_context_create ($options);
$result = File_get_contents ($url, False, $context);

echo $result;

4, use the Curl Library, before using the Curl Library, you may need to see if php.ini has opened the curl extension

 $url = ' http://localhost/test2.php?site=jb51.net '; $ch = Curl_init (); $timeout = 5; curl_
Setopt ($ch, Curlopt_url, $url);
curl_setopt ($ch, Curlopt_returntransfer, 1);
curl_setopt ($ch, Curlopt_connecttimeout, $timeout);
$file _contents = curl_exec ($ch);
Curl_close ($ch); 
 echo $file _contents;