Multiple variables in "search engine"

Original - php Code <?php // Array containing the name of parameters $params = Array( 0 => 'foo', 'bar', 'par3', 'par4' ); $nb_params = count( $params ); // Read database file $lines = file( 'data.txt' ); $nb_lines = count( $lines ); // According results $res = Array(); // Go thru each line for ( $i = 0; $i < $nb_lines; $i++ ) { // Flag that knows if the line is ok $ok = true; // Explode line $line = explode( ";", $lines[$i] ); // Check each parameter $j = 0; while ( $j < $nb_params && $ok ) { // If the param number $j has been given if ( isset( $_GET[$params[$j]] )) { // But if the line does not match if ( $_GET[$params[$j]] != $line[$j] ) { $ok = false; } } $j++; } // Add line if ok if ( $ok ) $res[] = $lines[$i]; } ?>

 
<?php
// Array containing the name of parameters
$params = Array( 0 => 'foo', 'bar', 'par3', 'par4' );
$nb_params = count( $params );
 
// Read database file
$lines = file( 'data.txt' );
$nb_lines = count( $lines );
 
// According results
$res = Array();
 
// Go thru each line
for ( $i = 0; $i < $nb_lines; $i++ ) {
    // Flag that knows if the line is ok
    $ok = true;
 
    // Explode line
    $line = explode( ";", $lines[$i] );
 
    // Check each parameter
    $j = 0;
    while ( $j < $nb_params && $ok ) {
        // If the param number $j has been given
        if ( isset( $_GET[$params[$j]] )) {
           // But if the line does not match
           if ( $_GET[$params[$j]] != $line[$j] ) {
               $ok = false;
           }
        }
        $j++;
    }
    
    // Add line if ok
    if ( $ok ) $res[] = $lines[$i];
}
?> 

Original - php Code <?php // Array containing the name of parameters $params = Array( 0 => 'foo', 'bar','par3', 'par4' ); $nb_params = count( $params );

 
<?php
// Array containing the name of parameters
$params = Array( 0 => 'foo', 'bar','par3', 'par4' );
$nb_params = count( $params );