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PHP Discussion Thread
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Views: 3990

Jun 21st, 2005

Find text on an external html site

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Hi all,

Would anyone know how to search an external html file for a work or phrase ?

I was thinking something like -

PHP Syntax (Toggle Plain Text)
<?php
$fp = fopen('http://www.google.ca', 'r');
 
if (preg_match('/Google.ca/', print fgets($fp))) {
	echo "match";
} else { 
	echo "no match";
}
?>
<?php
$fp = fopen('http://www.google.ca', 'r');

if (preg_match('/Google.ca/', print fgets($fp))) {
	echo "match";
} else { 
	echo "no match";
}
?>

Unfortunently, that doesn't work, but you get the jist of what I'm attempting.

Any ideas, suggestions, code would be greatfully appreciated,

Thanks,
Smoonie

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sm00nie

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Jun 21st, 2005

Re: Find text on an external html site

I think what you're describing is called "screen scraping". There's an article on my site specifically about PHP screen scraping: http://www.tgreer.com/class_http_php.html

Of course, support DaniWeb. If you'd like to discuss that article, you can do so in this thread. The article author is also a DaniWeb member.

tgreer

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Made Her Cry

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Jun 21st, 2005

Re: Find text on an external html site

Whoops! I see that same article has also been posted as a daniweb code snippet:

http://www.daniweb.com/code/snippet293.html

tgreer

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Made Her Cry

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Jun 21st, 2005

Re: Find text on an external html site

I'm the author of those articles and the class. It is posted here on Daniweb, but the article version at www.tgreer.com provides a lot more in-depth explanation of usage.

sm00nie, check out PHP's stripos() function. It is what you are looking for I believe.
http://us2.php.net/manual/en/function.stripos.php

Troy

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Posting Whiz

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Jun 21st, 2005

Re: Find text on an external html site

Oops, stripos() is only available in PHP5, so check out strpos().
http://us2.php.net/manual/en/function.strpos.php

Troy

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Posting Whiz

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Jun 21st, 2005

Re: Find text on an external html site

PHP Syntax (Toggle Plain Text)
<?php
$str_result = fopen("http://www.google.ca", "r");
while (!feof($str_result)) {
	$buffer = fgets($str_result, 4096);
	$result = strpos($buffer,"Google.ca");
	echo $result;
}
fclose($str_result);
?>
<?php
$str_result = fopen("http://www.google.ca", "r");
while (!feof($str_result)) {
	$buffer = fgets($str_result, 4096);
	$result = strpos($buffer,"Google.ca");
	echo $result;
}
fclose($str_result);
?>

Now I can add some error checking and I'm golden with this little snip.
Thanks fellas, I was starting to pull out what little hair I have left

sm00nie

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This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

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