Dynamic Document Search Engine – Part 1 Page 3

The code snippet given below explains every step of the program.

Searching keyword table for every word is a long process. This also reduces the efficiency of the program. To implement this
all the keywords in the keyword table is stored in an associative array $allWords. An associative array is one, which works
on B-Tree algorithm and very useful to perform searches. Here is the function.

<?php
Function LoadCurrentWords(){
global $allWords;
    $result = mysql_query( "select keyid, keyword from keytable" ) or die( "Error in executing mysql query" );
    while ( $row = mysql_fetch_array($result) ) {
        $allWords[$row[??keyword??] = $row[??keyid??];
    }
}
?>

Common Words:

$COMMON_WORDS is an associative array that stores an array of words, which are commonly used
in English Language. These words have to be removed while parsing the file.

$COMMON_WORDS=array(??a??=>1, ??as??=>1);

You can add as many common words as you like. See source code for full list of common words.