Detailed explanation of php source code fsockopen to obtain web page content examples

PHP fsockopen function description:

Open Internet or Unix domain socket connection (open socket link)

Initiates a socket connection to the resource specified by target .

fsockopen() returns a file pointer which may be used together with the other file functions (such as fgets() , fgetss() , fwrite() , fclose() , and feof() ). It returns a file handle

Open the PHP fsockopen function

PHP fsockopen requires PHP.ini The allow_url_fopen option is enabled.

Use fsockopen to obtain web content

The specific source code is as follows:

<?php
$host = "www.manongjc.com";
$page = "/index.htm";
$fp = fsockopen( "$host", 80, $errno, $errdesc );
if ( ! $fp ) {
 die ( "Couldn&#39;t connect to $host:\nError: $errno\nDesc: $errdesc\n" );
}
 
$request = "GET $page HTTP/1.0\r\n";
$request .= "Host: $host\r\n";
$request .= "Referer: http://www.manongjc.com/page.html\r\n";
$request .= "User-Agent: PHP test client\r\n\r\n";
 
$page = array();
fputs ( $fp, $request );
while ( ! feof( $fp ) ) {
 $page[] = fgets( $fp, 1024 );
}
fclose( $fp );
print "the server returned ".(count($page))." lines!";
?>

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