PHP Four ways to access URLs

PHP Four ways to access URLs

1.fopen mode
Accessing the specified URL function

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2. function Access_url ($url) {
4. if ($url = =") return false;
6. $fp = fopen ($url, ' R ') or exit (' Open url faild! ');
8. if ($fp) {
10. While (! Feof ($fp)) {
12. $file. =fgets ($fp)."";
14. }
16. Fclose ($fp);
18. }
20. return $file;
22. }

The 2.file_get_contents method (which causes the CPU to soar when a remote file is opened). File_get_contents can actually post)

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

3.curl mode

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2. function curl_file_get_contents ($durl) {
4. $ch = Curl_init ();
6. curl_setopt ($ch, Curlopt_url, $durl);
8. curl_setopt ($ch, Curlopt_returntransfer, true); //Get Data back
10. curl_setopt ($ch, Curlopt_binarytransfer, true); //Get Data back when Curlopt_returntransfer is enabled
12. $r = curl_exec ($ch);
14. Curl_close ($ch);
16. return $r;
18. }

4.fsockopen mode (can only get website homepage information, other pages can not)

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2. $fp = fsockopen ("www.example.com", $errno, $errstr, 30);
4. if (! $FP) {
6. echo "$errstr ($errno) <br/>\n";
8. } Else {
10. $out ="get/http/1.1\r\n";
12. $out. ="host:www.example.com\r\n";
14. $out. ="connection:close\r\n\r\n";
16. Fwrite ($fp, $out);
18. While (! Feof ($fp)) {
20. echo fgets ($fp, 128);
22. }
24. Fclose ($fp);
26. }

PHP Four ways to access URLs