Four ways to access url in php

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 a remote file will cause the CPU to surge. file_get_contents can actually be posted)

$content = file_get_contents("http://www.google.com");

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 $r = curl_exec($ch); curl_close($ch); return $r; }

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

$fp = fsockopen("www.example.com", 80, $errno, $errstr, 30); if (!$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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