Php Crawlar help

PHP
1

How would you conbined these codes. This is for the search engine

*<?*
*//This is only displayed if they have submitted the form*
*if ($searching =="yes")*
*{*
*echo "<h2>Results</h2><p>";*
*
*//If they did not enter a search term we give them an error*
*if ($find == "")*
*{*
*echo "<p>You forgot to enter a search term";*
*exit;*
*}*
*
*// Otherwise we connect to our Database*
*mysql_connect("mysql.yourhost.com", "user_name", "password") or die(mysql_error());*
*mysql_select_db("database_name") or die(mysql_error());*
*
*// We preform a bit of filtering*
*$find = strtoupper($find);*
*$find = strip_tags($find);*
*$find = trim ($find);*
*
*//Now we search for our search term, in the field the user specified*
*$data = mysql_query("SELECT * FROM users WHERE upper($field) LIKE'%$find%'");*
*
*//And we display the results*
*while($result = mysql_fetch_array( $data ))*
*{*
*echo $result['fname'];*
*echo " ";*
*echo $result['lname'];*
*echo "<br>";*
*echo $result['info'];*
*echo "<br>";*
*echo "<br>";*
*}*
*
*//This counts the number or results - and if there wasn't any it gives them a little message explaining that*
*$anymatches=mysql_num_rows($data);*
*if ($anymatches == 0)*
*{*
*echo "Sorry, but we can not find an entry to match your query<br><br>";*
*}*
*
*//And we remind them what they searched for*
*echo "<b>Searched For:</b> " .$find;*
*}*
*?>*

This is for the crawler

<?php
**$original_file = file_get_contents("http://www.domain.com");
**$stripped_file = strip_tags($original_file, "<a>");
**preg_match_all("/<a(?:[^>]*)href=\\"([^\\"]*)\\"(?:[^>]*)>(?:[^<]*)<\\/a>/is", $stripped_file, $matches);

**//DEBUGGING remove after it works

**//$matches[0] now contains the complete A tags; ex: <a href="link">text</a>
**//$matches[1] now contains only the HREFs in the A tags; ex: link

**header("Content-type: text/plain"); //Set the content type to plain text so the print below is easy to read!
**print_r($matches); //View the array to see if it worked
?>
2

It would be best if you could elaborate your question into something more than pasting two random PHP snippets.
It sounds like you are trying to make a search engine using only the two above snippets, which is never going to happen!

3

I am building a search engine using web crawlers and databases in php I know that is not the only thing you need to build a search engine. I have 48 different scripts. These are my last and main codes. How would you integrate the last and main codes?

4

A crawler is a process that runs behind the scenes, the search engine itself is the bit the user interacts with - you wouldn’t want those 2 scripts integrating at all.

5

You would want the crawler to run every however often perhaps scheduled as a cron - perhaps once a day - to run through a list of urls gathered and perform the crawl, then filter and parse the data to a storage device or database.
The frontend site - the search engine - that the users will see will then interact with the already populated database retrieving info as they need.