Absolutely simplest search engine code..

Anon

OK... I need to know the code of the absolutely simplest search engine. Nothing fancy... kinda like the one that is available on "Matt's Script Archive". Only, of course, I need the similar in PHP...

The "search engine" should just look for file contents in only one directory, and then return the results - again, in the simplest way, nothing fancy...

Thanks in advance!

Anon

Do you want to search in a database (SQL sentences) or in a directory? If you want to search in a directory, look at the grep UNIX command. If you want to search into a databse do the following:

EXCLUSIVE search (all the words, exactly matching the criteria):

SELECT field FROM table WHERE field2 LIKE 'yourcriteria'

INCLUSIVE search (any of the words that look like the criteria)

SELECT field FROM table WHERE field2 = LIKE '%yourcriteria%'

Hope it helps: 🙂

fLIPIS

Anon

Man, that was fast! Thanks! 🙂

Well, I simply need to search through the (html)pages in a directory, not a database...

Yes, the "grep UNIX command" is probably what I was looking for... I'll check it out. Thanks!

Anon

You're welcome

fLIPIS

Anon

BTW... is the (UNIX) \"grep\" command similar to the (PHP) preg_match command?

[deleted]

Small note:

Grep requires that you tell it which files to search. If you accidently tell it to search *.html, it will search and return all html files that match, including secure/password protected items.

It's ok for small sites, but not for large/busy sites.

Anon

There is a preg_grep command. Take a look in:

http://www.php.net/manual/en/function.preg-grep.php

Never used it, but i don't think it's for files, but for arrays and strings.

Hope it helps

fLIPIS

[deleted]

Indeed, preg_grep is for using regular expressions on arrays of strings, not files.
(I wonder how drunk they were when they thought of that name🙂 )

But this function is quite 'cool' to find the lines of text that contain what you are looking for;

// Load a file into an array
$aLines = file('/path/to/file.txt');

// Find the lines that have 'foo' in them
$aMatches = preg_grep("/foo/", $aLines);

// print the results
foreach($aMatches as $sLine)
{
echo $sLine;
}

Now you can use the 'real' grep to find the names of the files that contain your keywords, and use this function to print the matches in a way that makes sense :-)

Well spotted fLIPIS!