Several ways to access url in php-PHP Tutorial-php.cn

This article mainly shares with you several methods of accessing URLs in PHP. There are four methods in total. I hope it can help you.

1. fopen method

//访问指定URL函数 function access_url($url) { if($url=='') return false; $fp = fopen($url, 'r') or exit('Open url faild!'); if($fp){ while(!feof($fp)) { $file .= fgets($fp) . ""; } fclose($fp); } return $file; }

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2. file_get_contents method (opening remote files will cause the CPU to surge. File_get_contents can actually post)

//以post方式获取url $data = array ('foo' => 'bar'); $data = http_build_query($data); $opts['http'] = array ( 'method' => 'POST', 'header'=> "Content-type:application/x-www-form-urlencodedrn". "Content-Length: " . strlen($data) . "rn", 'content' => $data ); $context = stream_context_create($opts); $html = file_get_contents('http://localhost/test.html', false, $context); echo $html;

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3. curl method

function curl_file_get_contents($durl){ $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $durl); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true) ; // 获取数据返回 curl_setopt($ch, CURLOPT_BINARYTRANSFER, true) ; // 在启用 CURLOPT_RETURNTRANSFER 时候将获取数据返回 $data = curl_exec($ch); curl_close($ch); return $data; }

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4. fsockopen method (only the homepage information of the website can be obtained, not other pages)

$fp = fsockopen("www.example.com", 80, $errno, $errstr, 30); (!$fp) { echo "$errstr ($errno)
\n"; }else { $out="GET / HTTP/1.1\r\n"; $out.="Host: www.example.com\r\n"; $out.="Connection: Close\r\n\r\n"; fwrite($fp, $out); while (!feof($fp)) { echo fgets($fp, 128); } fclose($fp); }

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