Check whether or not the output contains certain string

janhouse00

Hello, please consider this script:

//js.php
<script language=javascript src="http://www.foobar.com/path/secure?request=yourinfo></script>

If the above script is called, the browser will simply output some random plain text, like "John". But when I click on the "view source" of the browser, it displays: <script language=javascript src="http://www.foobar.com/path/secure?request=yourinfo></script>.So, is there a way to check whether or not the text outputed to the browser contains the string "John"?Thank you very much.

P/S: the following script is the "useless" version:

<?php
$file = fopen ("js.php", "r");
if (!$file)
exit;
while (!feof ($file)) {
$line = fgets ($file, 1024);
if(strstr($line,"John"))
//do something...

}
fclose($file);
?>

Weedpacket

So you want to see the output of http://www.foobar.com/path/secure?request=yourinfo, not the file that contains that URL? So you're wanting the response to the request that the browser makes when it reads the <script> tag. You're going to have to make that request yourself.

Since it's using an http querystring, I don't think a simple fopen() will work. What you can do instead is use fsockopen() to connect to http://www.foobar.com/, write and send out the appropriate http GET request, (which would amount to requesting the above URL), then examine the response for occurrences of "John".

janhouse00

After using fsockopen(), what shall I do? What do you mean by

Originally posted by Weedpacket
..fsockopen() to connect to http://www.foobar.com/, write and send out the appropriate http GET request, (which would amount to requesting the above URL), then examine the response for occurrences of "John".

I'm totally new to the stuff like fsockopen and all..Please give me some clues regarding this.Thanks

diego25

fsockopen() returns a file descriptor, so you can use the file functions like fgets and fwrite to communicate through the socket.

Diego

janhouse00

Okay, this is what I've done,

$script_url="/path/secure?request=yourinfo";
$fp = fsockopen ("http://www.foobar.com", 80, $errno, $errstr, 30);
if (!$fp) {
echo "$errstr ($errno)<br>\n";
} else {

fputs( $fp, sprintf( "GET %s HTTP/1.0\n\n", $script_url ) );

while (!feof($fp)) {
    echo fgets ($fp,256);
}
fclose ($fp);

Then I got stuck. Again I would like to know how to examine the response for occurrences of "John" from here. Could anyone please give me a hand on this?(On how to read through the js file: http://www.foobar.com/path/secure?request=yourinfo to find out the existence of the string "John"? Thank you very much