function _ParseSearchResponse($response, $nreqs)
{
$p = 0;
// current position
$max = strlen($response);
// max position for checks, to protect against broken responses
$results = array();
for ($ires = 0; $ires < $nreqs && $p < $max; $ires++) {
$results[] = array();
$result =& $results[$ires];
$result["error"] = "";
$result["warning"] = "";
// extract status
list(, $status) = unpack("N*", substr($response, $p, 4));
$p += 4;
$result["status"] = $status;
if ($status != SEARCHD_OK) {
list(, $len) = unpack("N*", substr($response, $p, 4));
$p += 4;
$message = substr($response, $p, $len);
$p += $len;
if ($status == SEARCHD_WARNING) {
$result["warning"] = $message;
} else {
$result["error"] = $message;
continue;
}
}
// read schema
$fields = array();
$attrs = array();
list(, $nfields) = unpack("N*", substr($response, $p, 4));
$p += 4;
while ($nfields-- > 0 && $p < $max) {
list(, $len) = unpack("N*", substr($response, $p, 4));
$p += 4;
$fields[] = substr($response, $p, $len);
$p += $len;
}
$result["fields"] = $fields;
list(, $nattrs) = unpack("N*", substr($response, $p, 4));
$p += 4;
while ($nattrs-- > 0 && $p < $max) {
list(, $len) = unpack("N*", substr($response, $p, 4));
$p += 4;
$attr = substr($response, $p, $len);
$p += $len;
list(, $type) = unpack("N*", substr($response, $p, 4));
$p += 4;
$attrs[$attr] = $type;
}
$result["attrs"] = $attrs;
// read match count
list(, $count) = unpack("N*", substr($response, $p, 4));
$p += 4;
list(, $id64) = unpack("N*", substr($response, $p, 4));
$p += 4;
// read matches
$idx = -1;
while ($count-- > 0 && $p < $max) {
// index into result array
$idx++;
// parse document id and weight
if ($id64) {
$doc = sphUnpackU64(substr($response, $p, 8));
$p += 8;
list(, $weight) = unpack("N*", substr($response, $p, 4));
$p += 4;
} else {
list($doc, $weight) = array_values(unpack("N*N*", substr($response, $p, 8)));
$p += 8;
$doc = sphFixUint($doc);
}
$weight = sprintf("%u", $weight);
// create match entry
if ($this->_arrayresult) {
$result["matches"][$idx] = array("id" => $doc, "weight" => $weight);
} else {
$result["matches"][$doc]["weight"] = $weight;
}
// parse and create attributes
$attrvals = array();
foreach ($attrs as $attr => $type) {
// handle 64bit ints
if ($type == SPH_ATTR_BIGINT) {
$attrvals[$attr] = sphUnpackI64(substr($response, $p, 8));
$p += 8;
continue;
}
// handle floats
if ($type == SPH_ATTR_FLOAT) {
list(, $uval) = unpack("N*", substr($response, $p, 4));
$p += 4;
list(, $fval) = unpack("f*", pack("L", $uval));
$attrvals[$attr] = $fval;
continue;
}
// handle everything else as unsigned ints
list(, $val) = unpack("N*", substr($response, $p, 4));
$p += 4;
if ($type == SPH_ATTR_MULTI) {
$attrvals[$attr] = array();
$nvalues = $val;
while ($nvalues-- > 0 && $p < $max) {
list(, $val) = unpack("N*", substr($response, $p, 4));
$p += 4;
$attrvals[$attr][] = sphFixUint($val);
}
} else {
if ($type == SPH_ATTR_MULTI64) {
$attrvals[$attr] = array();
$nvalues = $val;
while ($nvalues > 0 && $p < $max) {
$val = sphUnpackU64(substr($response, $p, 8));
$p += 8;
$attrvals[$attr][] = strval($val);
// FIXME!!! sphFixUint returns MVA values as string so It to
$nvalues -= 2;
}
} else {
if ($type == SPH_ATTR_STRING) {
$attrvals[$attr] = substr($response, $p, $val);
$p += $val;
} else {
$attrvals[$attr] = sphFixUint($val);
}
}
}
}
if ($this->_arrayresult) {
$result["matches"][$idx]["attrs"] = $attrvals;
} else {
$result["matches"][$doc]["attrs"] = $attrvals;
}
}
list($total, $total_found, $msecs, $words) = array_values(unpack("N*N*N*N*", substr($response, $p, 16)));
$result["total"] = sprintf("%u", $total);
$result["total_found"] = sprintf("%u", $total_found);
$result["time"] = sprintf("%.3f", $msecs / 1000);
$p += 16;
while ($words-- > 0 && $p < $max) {
list(, $len) = unpack("N*", substr($response, $p, 4));
$p += 4;
$word = substr($response, $p, $len);
$p += $len;
list($docs, $hits) = array_values(unpack("N*N*", substr($response, $p, 8)));
$p += 8;
$result["words"][$word] = array("docs" => sprintf("%u", $docs), "hits" => sprintf("%u", $hits));
}
}
$this->_MBPop();
return $results;
}
