function sphinx_do_search($by_date = false, $start = 0, $count = 10, $proximity = true)
{
global $globals;
$response = array();
$queries = array();
$recorded = array();
$start_time = microtime(true);
$indices = $_REQUEST['w'] . ' ' . $_REQUEST['w'] . '_delta';
$cl = sphinx_client();
if (!$cl) {
return $response;
}
$cl->SetLimits($start, $count);
if ($_REQUEST['w'] == 'links') {
$cl->SetFieldWeights(array('title' => 3, 'tags' => 3, 'url' => 1, 'content' => 1));
} else {
$cl->SetFieldWeights(array('content' => 1));
}
// Function to filter by sub site
if ($_REQUEST['w'] == 'links' && $globals['submnm']) {
$subs = array();
$subs[] = SitesMgr::my_id();
$subs = array_merge($subs, SitesMgr::get_sub_subs_ids());
$cl->SetFilter('sub', $subs);
}
$response['rows'] = 0;
$response['time'] = 0;
if (empty($_REQUEST['words'])) {
return $response;
}
$words_array = preg_split('/\\s+/', $_REQUEST['words'], -1, PREG_SPLIT_NO_EMPTY);
$words_count = count($words_array);
$words = $_REQUEST['words'];
if ($_REQUEST['t']) {
$max_date = time();
$min_date = intval($_REQUEST['t']);
$cl->SetFilterRange('date', $min_date, $max_date);
}
if ($_REQUEST['h']) {
$max_date = time();
$min_date = $max_date - intval($_REQUEST['h']) * 3600;
$cl->SetFilterRange('date', $min_date, $max_date);
}
if ($_REQUEST['yymm']) {
$yymm = intval($_REQUEST['yymm']);
$yy = intval($yymm / 100);
$mm = $yymm - $yy * 100;
$min_date = mktime(0, 0, 0, $mm, 1, $yy);
if ($mm == 12) {
$mm = 1;
$yy++;
} else {
$mm++;
}
$max_date = mktime(0, 0, 0, $mm, 1, $yy);
$cl->SetFilterRange('date', $min_date, $max_date);
}
if ($_REQUEST['w'] == 'links' && $_REQUEST['s']) {
if (preg_match('/^ *! */', $_REQUEST['s'])) {
// Allows to reject a status
$_REQUEST['s'] = preg_replace('/^ *! */', '', $_REQUEST['s']);
$s_reject = true;
} else {
$s_reject = false;
}
// Allow multiple statuses
$statuses = preg_split('/\\s+/', $_REQUEST['s'], -1, PREG_SPLIT_NO_EMPTY);
$s_id = array();
foreach ($statuses as $s) {
if (isset($globals['status_values'][$s])) {
array_push($s_id, $globals['status_values'][$s]);
}
}
if (count($s_id) > 0) {
$cl->SetFilter('status', $s_id, $s_reject);
}
}
if ($_REQUEST['u']) {
$u = new User();
$u->username = $_REQUEST['u'];
$u->read();
$cl->SetFilterRange('user', $u->id, $u->id);
}
if ($_REQUEST['w'] == 'links' && $_REQUEST['p']) {
$f = '@' . $_REQUEST['p'];
} else {
$f = '@*';
}
if ($by_date || $_REQUEST['o'] == 'date' || $_REQUEST['p'] == 'url') {
$cl->SetSortMode(SPH_SORT_ATTR_DESC, 'date');
} elseif ($_REQUEST['o'] == 'pure') {
$cl->SetSortMode(SPH_SORT_RELEVANCE);
} else {
// If "root_time", it will center the search on that timestamp
if ($_REQUEST['root_time'] > 0) {
$now = intval($_REQUEST['root_time']);
} else {
$now = time();
}
// expressions to decrease weights logarimically
if ($_REQUEST['w'] == 'links') {
$p = $globals['status_values']['published'];
$q = $globals['status_values']['queued'];
$b = log(0.9) / 720;
$fp = "@weight * max(0.4, exp({$b}*abs({$now}-date)/3600))";
$b = log(0.5) / 720;
$fq = "@weight * max(0.25, exp({$b}*abs({$now}-date)/3600))";
$b = log(0.2) / 720;
$fo = "@weight * max(0.1, exp({$b}*abs({$now}-date)/3600))";
$exp = "if (status-{$p} = 0, {$fp} , if (status-{$q} = 0, {$fq}, {$fo}))";
} else {
$b = log(0.95) / 720;
$exp = "@weight * max(0.5, exp({$b}*abs({$now}-date)/3600))";
}
$cl->SetSortMode(SPH_SORT_EXPR, $exp);
}
$cl->SetMatchMode(SPH_MATCH_EXTENDED);
// TODO: Alert, deprecated in 2.2
if ($words_count == 1 || $_REQUEST['p'] == 'url') {
$cl->SetRankingMode(SPH_RANK_NONE);
} elseif ($proximity) {
$cl->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
} else {
$cl->SetRankingMode(SPH_RANK_BM25);
}
// Used for related links
if ($_REQUEST['p'] == 'url') {
// It allows to search for several domains/url
for ($i = 0; $i < count($words_array); $i++) {
$words_array[$i] = '="' . $cl->EscapeString($words_array[$i]) . '"';
}
$query = implode(" | ", $words_array);
// Add the "OR" for several domain
$q = $cl->AddQuery("{$f} {$query}", $indices);
array_push($queries, $q);
} else {
if ($words_count < 5) {
$q = $cl->AddQuery("{$f} {$words}", $indices);
array_push($queries, $q);
}
}
// If there are no boolean opertions, add a new search for ANY of the terms
// Take in account phrases in between " and '
if (!preg_match('/( and | or | [\\-\\+\\&\\|])/i', $words) && $words_count > 1 && $_REQUEST['p'] != 'url') {
$words = '';
$quotes = 0;
$c = 0;
foreach ($words_array as $w) {
if ($c > 0 && $quotes == 0) {
$words .= ' | ';
}
if ($quotes == 0 && preg_match('/^["\']/', $w)) {
$quotes++;
}
if ($quotes > 0 && preg_match('/["\'](\\~{0,1}\\d+){0,1}$/', $w)) {
$quotes--;
}
$words .= " {$w}";
$c++;
}
$q = $cl->AddQuery("{$f} {$words}", $indices);
array_push($queries, $q);
}
$results = $cl->RunQueries();
$n = 0;
$response['error'] = $results['error'];
foreach ($queries as $q) {
$res = $results[$q];
if (is_array($res["matches"])) {
$response['rows'] += $res["total_found"];
foreach ($res["matches"] as $doc => $docinfo) {
if (!$recorded[$doc]) {
$response['ids'][$n] = $doc;
$response['weights']["{$doc}"] = $docinfo['weight'];
$recorded[$doc] = true;
$n++;
} else {
$response['rows']--;
}
}
}
}
$response['time'] = microtime(true) - $start_time;
return $response;
}