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sphinxapi.php
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<?php
//
// $Id: sphinxapi.php 3782 2013-04-06 18:22:58Z kevg $
//
//
// Copyright (c) 2001-2012, Andrew Aksyonoff
// Copyright (c) 2008-2012, Sphinx Technologies Inc
// All rights reserved
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License. You should have
// received a copy of the GPL license along with this program; if you
// did not, you can find it at http://www.gnu.org/
//
/////////////////////////////////////////////////////////////////////////////
// PHP version of Sphinx searchd client (PHP API)
/////////////////////////////////////////////////////////////////////////////
/// known searchd commands
define ( "SEARCHD_COMMAND_SEARCH", 0 );
define ( "SEARCHD_COMMAND_EXCERPT", 1 );
define ( "SEARCHD_COMMAND_UPDATE", 2 );
define ( "SEARCHD_COMMAND_KEYWORDS", 3 );
define ( "SEARCHD_COMMAND_PERSIST", 4 );
define ( "SEARCHD_COMMAND_STATUS", 5 );
define ( "SEARCHD_COMMAND_FLUSHATTRS", 7 );
/// current client-side command implementation versions
define ( "VER_COMMAND_SEARCH", 0x119 );
define ( "VER_COMMAND_EXCERPT", 0x104 );
define ( "VER_COMMAND_UPDATE", 0x102 );
define ( "VER_COMMAND_KEYWORDS", 0x100 );
define ( "VER_COMMAND_STATUS", 0x100 );
define ( "VER_COMMAND_QUERY", 0x100 );
define ( "VER_COMMAND_FLUSHATTRS", 0x100 );
/// known searchd status codes
define ( "SEARCHD_OK", 0 );
define ( "SEARCHD_ERROR", 1 );
define ( "SEARCHD_RETRY", 2 );
define ( "SEARCHD_WARNING", 3 );
/// known match modes
define ( "SPH_MATCH_ALL", 0 );
define ( "SPH_MATCH_ANY", 1 );
define ( "SPH_MATCH_PHRASE", 2 );
define ( "SPH_MATCH_BOOLEAN", 3 );
define ( "SPH_MATCH_EXTENDED", 4 );
define ( "SPH_MATCH_FULLSCAN", 5 );
define ( "SPH_MATCH_EXTENDED2", 6 ); // extended engine V2 (TEMPORARY, WILL BE REMOVED)
/// known ranking modes (ext2 only)
define ( "SPH_RANK_PROXIMITY_BM25", 0 ); ///< default mode, phrase proximity major factor and BM25 minor one
define ( "SPH_RANK_BM25", 1 ); ///< statistical mode, BM25 ranking only (faster but worse quality)
define ( "SPH_RANK_NONE", 2 ); ///< no ranking, all matches get a weight of 1
define ( "SPH_RANK_WORDCOUNT", 3 ); ///< simple word-count weighting, rank is a weighted sum of per-field keyword occurence counts
define ( "SPH_RANK_PROXIMITY", 4 );
define ( "SPH_RANK_MATCHANY", 5 );
define ( "SPH_RANK_FIELDMASK", 6 );
define ( "SPH_RANK_SPH04", 7 );
define ( "SPH_RANK_EXPR", 8 );
define ( "SPH_RANK_TOTAL", 9 );
/// known sort modes
define ( "SPH_SORT_RELEVANCE", 0 );
define ( "SPH_SORT_ATTR_DESC", 1 );
define ( "SPH_SORT_ATTR_ASC", 2 );
define ( "SPH_SORT_TIME_SEGMENTS", 3 );
define ( "SPH_SORT_EXTENDED", 4 );
define ( "SPH_SORT_EXPR", 5 );
/// known filter types
define ( "SPH_FILTER_VALUES", 0 );
define ( "SPH_FILTER_RANGE", 1 );
define ( "SPH_FILTER_FLOATRANGE", 2 );
/// known attribute types
define ( "SPH_ATTR_INTEGER", 1 );
define ( "SPH_ATTR_TIMESTAMP", 2 );
define ( "SPH_ATTR_ORDINAL", 3 );
define ( "SPH_ATTR_BOOL", 4 );
define ( "SPH_ATTR_FLOAT", 5 );
define ( "SPH_ATTR_BIGINT", 6 );
define ( "SPH_ATTR_STRING", 7 );
define ( "SPH_ATTR_MULTI", 0x40000001 );
define ( "SPH_ATTR_MULTI64", 0x40000002 );
/// known grouping functions
define ( "SPH_GROUPBY_DAY", 0 );
define ( "SPH_GROUPBY_WEEK", 1 );
define ( "SPH_GROUPBY_MONTH", 2 );
define ( "SPH_GROUPBY_YEAR", 3 );
define ( "SPH_GROUPBY_ATTR", 4 );
define ( "SPH_GROUPBY_ATTRPAIR", 5 );
// important properties of PHP's integers:
// - always signed (one bit short of PHP_INT_SIZE)
// - conversion from string to int is saturated
// - float is double
// - div converts arguments to floats
// - mod converts arguments to ints
// the packing code below works as follows:
// - when we got an int, just pack it
// if performance is a problem, this is the branch users should aim for
//
// - otherwise, we got a number in string form
// this might be due to different reasons, but we assume that this is
// because it didn't fit into PHP int
//
// - factor the string into high and low ints for packing
// - if we have bcmath, then it is used
// - if we don't, we have to do it manually (this is the fun part)
//
// - x64 branch does factoring using ints
// - x32 (ab)uses floats, since we can't fit unsigned 32-bit number into an int
//
// unpacking routines are pretty much the same.
// - return ints if we can
// - otherwise format number into a string
/// pack 64-bit signed
function sphPackI64 ( $v )
{
assert ( is_numeric($v) );
// x64
if ( PHP_INT_SIZE>=8 )
{
$v = (int)$v;
return pack ( "NN", $v>>32, $v&0xFFFFFFFF );
}
// x32, int
if ( is_int($v) )
return pack ( "NN", $v < 0 ? -1 : 0, $v );
// x32, bcmath
if ( function_exists("bcmul") )
{
if ( bccomp ( $v, 0 ) == -1 )
$v = bcadd ( "18446744073709551616", $v );
$h = bcdiv ( $v, "4294967296", 0 );
$l = bcmod ( $v, "4294967296" );
return pack ( "NN", (float)$h, (float)$l ); // conversion to float is intentional; int would lose 31st bit
}
// x32, no-bcmath
$p = max(0, strlen($v) - 13);
$lo = abs((float)substr($v, $p));
$hi = abs((float)substr($v, 0, $p));
$m = $lo + $hi*1316134912.0; // (10 ^ 13) % (1 << 32) = 1316134912
$q = floor($m/4294967296.0);
$l = $m - ($q*4294967296.0);
$h = $hi*2328.0 + $q; // (10 ^ 13) / (1 << 32) = 2328
if ( $v<0 )
{
if ( $l==0 )
$h = 4294967296.0 - $h;
else
{
$h = 4294967295.0 - $h;
$l = 4294967296.0 - $l;
}
}
return pack ( "NN", $h, $l );
}
/// pack 64-bit unsigned
function sphPackU64 ( $v )
{
assert ( is_numeric($v) );
// x64
if ( PHP_INT_SIZE>=8 )
{
assert ( $v>=0 );
// x64, int
if ( is_int($v) )
return pack ( "NN", $v>>32, $v&0xFFFFFFFF );
// x64, bcmath
if ( function_exists("bcmul") )
{
$h = bcdiv ( $v, 4294967296, 0 );
$l = bcmod ( $v, 4294967296 );
return pack ( "NN", $h, $l );
}
// x64, no-bcmath
$p = max ( 0, strlen($v) - 13 );
$lo = (int)substr ( $v, $p );
$hi = (int)substr ( $v, 0, $p );
$m = $lo + $hi*1316134912;
$l = $m % 4294967296;
$h = $hi*2328 + (int)($m/4294967296);
return pack ( "NN", $h, $l );
}
// x32, int
if ( is_int($v) )
return pack ( "NN", 0, $v );
// x32, bcmath
if ( function_exists("bcmul") )
{
$h = bcdiv ( $v, "4294967296", 0 );
$l = bcmod ( $v, "4294967296" );
return pack ( "NN", (float)$h, (float)$l ); // conversion to float is intentional; int would lose 31st bit
}
// x32, no-bcmath
$p = max(0, strlen($v) - 13);
$lo = (float)substr($v, $p);
$hi = (float)substr($v, 0, $p);
$m = $lo + $hi*1316134912.0;
$q = floor($m / 4294967296.0);
$l = $m - ($q * 4294967296.0);
$h = $hi*2328.0 + $q;
return pack ( "NN", $h, $l );
}
// unpack 64-bit unsigned
function sphUnpackU64 ( $v )
{
list ( $hi, $lo ) = array_values ( unpack ( "N*N*", $v ) );
if ( PHP_INT_SIZE>=8 )
{
if ( $hi<0 ) $hi += (1<<32); // because php 5.2.2 to 5.2.5 is totally fucked up again
if ( $lo<0 ) $lo += (1<<32);
// x64, int
if ( $hi<=2147483647 )
return ($hi<<32) + $lo;
// x64, bcmath
if ( function_exists("bcmul") )
return bcadd ( $lo, bcmul ( $hi, "4294967296" ) );
// x64, no-bcmath
$C = 100000;
$h = ((int)($hi / $C) << 32) + (int)($lo / $C);
$l = (($hi % $C) << 32) + ($lo % $C);
if ( $l>$C )
{
$h += (int)($l / $C);
$l = $l % $C;
}
if ( $h==0 )
return $l;
return sprintf ( "%d%05d", $h, $l );
}
// x32, int
if ( $hi==0 )
{
if ( $lo>0 )
return $lo;
return sprintf ( "%u", $lo );
}
$hi = sprintf ( "%u", $hi );
$lo = sprintf ( "%u", $lo );
// x32, bcmath
if ( function_exists("bcmul") )
return bcadd ( $lo, bcmul ( $hi, "4294967296" ) );
// x32, no-bcmath
$hi = (float)$hi;
$lo = (float)$lo;
$q = floor($hi/10000000.0);
$r = $hi - $q*10000000.0;
$m = $lo + $r*4967296.0;
$mq = floor($m/10000000.0);
$l = $m - $mq*10000000.0;
$h = $q*4294967296.0 + $r*429.0 + $mq;
$h = sprintf ( "%.0f", $h );
$l = sprintf ( "%07.0f", $l );
if ( $h=="0" )
return sprintf( "%.0f", (float)$l );
return $h . $l;
}
// unpack 64-bit signed
function sphUnpackI64 ( $v )
{
list ( $hi, $lo ) = array_values ( unpack ( "N*N*", $v ) );
// x64
if ( PHP_INT_SIZE>=8 )
{
if ( $hi<0 ) $hi += (1<<32); // because php 5.2.2 to 5.2.5 is totally fucked up again
if ( $lo<0 ) $lo += (1<<32);
return ($hi<<32) + $lo;
}
// x32, int
if ( $hi==0 )
{
if ( $lo>0 )
return $lo;
return sprintf ( "%u", $lo );
}
// x32, int
elseif ( $hi==-1 )
{
if ( $lo<0 )
return $lo;
return sprintf ( "%.0f", $lo - 4294967296.0 );
}
$neg = "";
$c = 0;
if ( $hi<0 )
{
$hi = ~$hi;
$lo = ~$lo;
$c = 1;
$neg = "-";
}
$hi = sprintf ( "%u", $hi );
$lo = sprintf ( "%u", $lo );
// x32, bcmath
if ( function_exists("bcmul") )
return $neg . bcadd ( bcadd ( $lo, bcmul ( $hi, "4294967296" ) ), $c );
// x32, no-bcmath
$hi = (float)$hi;
$lo = (float)$lo;
$q = floor($hi/10000000.0);
$r = $hi - $q*10000000.0;
$m = $lo + $r*4967296.0;
$mq = floor($m/10000000.0);
$l = $m - $mq*10000000.0 + $c;
$h = $q*4294967296.0 + $r*429.0 + $mq;
if ( $l==10000000 )
{
$l = 0;
$h += 1;
}
$h = sprintf ( "%.0f", $h );
$l = sprintf ( "%07.0f", $l );
if ( $h=="0" )
return $neg . sprintf( "%.0f", (float)$l );
return $neg . $h . $l;
}
function sphFixUint ( $value )
{
if ( PHP_INT_SIZE>=8 )
{
// x64 route, workaround broken unpack() in 5.2.2+
if ( $value<0 ) $value += (1<<32);
return $value;
}
else
{
// x32 route, workaround php signed/unsigned braindamage
return sprintf ( "%u", $value );
}
}
/// sphinx searchd client class
class SphinxClient
{
var $_host; ///< searchd host (default is "localhost")
var $_port; ///< searchd port (default is 9312)
var $_offset; ///< how many records to seek from result-set start (default is 0)
var $_limit; ///< how many records to return from result-set starting at offset (default is 20)
var $_mode; ///< query matching mode (default is SPH_MATCH_ALL)
var $_weights; ///< per-field weights (default is 1 for all fields)
var $_sort; ///< match sorting mode (default is SPH_SORT_RELEVANCE)
var $_sortby; ///< attribute to sort by (defualt is "")
var $_min_id; ///< min ID to match (default is 0, which means no limit)
var $_max_id; ///< max ID to match (default is 0, which means no limit)
var $_filters; ///< search filters
var $_groupby; ///< group-by attribute name
var $_groupfunc; ///< group-by function (to pre-process group-by attribute value with)
var $_groupsort; ///< group-by sorting clause (to sort groups in result set with)
var $_groupdistinct;///< group-by count-distinct attribute
var $_maxmatches; ///< max matches to retrieve
var $_cutoff; ///< cutoff to stop searching at (default is 0)
var $_retrycount; ///< distributed retries count
var $_retrydelay; ///< distributed retries delay
var $_anchor; ///< geographical anchor point
var $_indexweights; ///< per-index weights
var $_ranker; ///< ranking mode (default is SPH_RANK_PROXIMITY_BM25)
var $_rankexpr; ///< ranking mode expression (for SPH_RANK_EXPR)
var $_maxquerytime; ///< max query time, milliseconds (default is 0, do not limit)
var $_fieldweights; ///< per-field-name weights
var $_overrides; ///< per-query attribute values overrides
var $_select; ///< select-list (attributes or expressions, with optional aliases)
var $_error; ///< last error message
var $_warning; ///< last warning message
var $_connerror; ///< connection error vs remote error flag
var $_reqs; ///< requests array for multi-query
var $_mbenc; ///< stored mbstring encoding
var $_arrayresult; ///< whether $result["matches"] should be a hash or an array
var $_timeout; ///< connect timeout
var $_path;
var $_socket;
/////////////////////////////////////////////////////////////////////////////
// common stuff
/////////////////////////////////////////////////////////////////////////////
/// create a new client object and fill defaults
function __construct ()
{
// per-client-object settings
$this->_host = "localhost";
$this->_port = 9312;
$this->_path = false;
$this->_socket = false;
// per-query settings
$this->_offset = 0;
$this->_limit = 20;
$this->_mode = SPH_MATCH_ALL;
$this->_weights = array ();
$this->_sort = SPH_SORT_RELEVANCE;
$this->_sortby = "";
$this->_min_id = 0;
$this->_max_id = 0;
$this->_filters = array ();
$this->_groupby = "";
$this->_groupfunc = SPH_GROUPBY_DAY;
$this->_groupsort = "@group desc";
$this->_groupdistinct= "";
$this->_maxmatches = 1000;
$this->_cutoff = 0;
$this->_retrycount = 0;
$this->_retrydelay = 0;
$this->_anchor = array ();
$this->_indexweights= array ();
$this->_ranker = SPH_RANK_PROXIMITY_BM25;
$this->_rankexpr = "";
$this->_maxquerytime= 0;
$this->_fieldweights= array();
$this->_overrides = array();
$this->_select = "*";
$this->_error = ""; // per-reply fields (for single-query case)
$this->_warning = "";
$this->_connerror = false;
$this->_reqs = array (); // requests storage (for multi-query case)
$this->_mbenc = "";
$this->_arrayresult = false;
$this->_timeout = 0;
}
function __destruct()
{
if ( $this->_socket !== false )
fclose ( $this->_socket );
}
/// get last error message (string)
function GetLastError ()
{
return $this->_error;
}
/// get last warning message (string)
function GetLastWarning ()
{
return $this->_warning;
}
/// get last error flag (to tell network connection errors from searchd errors or broken responses)
function IsConnectError()
{
return $this->_connerror;
}
/// set searchd host name (string) and port (integer)
function SetServer ( $host, $port = 0 )
{
assert ( is_string($host) );
if ( $host[0] == '/')
{
$this->_path = 'unix://' . $host;
return;
}
if ( substr ( $host, 0, 7 )=="unix://" )
{
$this->_path = $host;
return;
}
$this->_host = $host;
$port = intval($port);
assert ( 0<=$port && $port<65536 );
$this->_port = ( $port==0 ) ? 9312 : $port;
$this->_path = '';
}
/// set server connection timeout (0 to remove)
function SetConnectTimeout ( $timeout )
{
assert ( is_numeric($timeout) );
$this->_timeout = $timeout;
}
function _Send ( $handle, $data, $length )
{
if ( feof($handle) || fwrite ( $handle, $data, $length ) !== $length )
{
$this->_error = 'connection unexpectedly closed (timed out?)';
$this->_connerror = true;
return false;
}
return true;
}
/////////////////////////////////////////////////////////////////////////////
/// enter mbstring workaround mode
function _MBPush ()
{
$this->_mbenc = "";
if ( ini_get ( "mbstring.func_overload" ) & 2 )
{
$this->_mbenc = mb_internal_encoding();
mb_internal_encoding ( "latin1" );
}
}
/// leave mbstring workaround mode
function _MBPop ()
{
if ( $this->_mbenc )
mb_internal_encoding ( $this->_mbenc );
}
/// connect to searchd server
function _Connect ()
{
if ( $this->_socket!==false )
{
// we are in persistent connection mode, so we have a socket
// however, need to check whether it's still alive
if ( !@feof ( $this->_socket ) )
return $this->_socket;
// force reopen
$this->_socket = false;
}
$errno = 0;
$errstr = "";
$this->_connerror = false;
if ( $this->_path )
{
$host = $this->_path;
$port = 0;
}
else
{
$host = $this->_host;
$port = $this->_port;
}
if ( $this->_timeout<=0 )
$fp = @fsockopen ( $host, $port, $errno, $errstr );
else
$fp = @fsockopen ( $host, $port, $errno, $errstr, $this->_timeout );
if ( !$fp )
{
if ( $this->_path )
$location = $this->_path;
else
$location = "{$this->_host}:{$this->_port}";
$errstr = trim ( $errstr );
$this->_error = "connection to $location failed (errno=$errno, msg=$errstr)";
$this->_connerror = true;
return false;
}
// send my version
// this is a subtle part. we must do it before (!) reading back from searchd.
// because otherwise under some conditions (reported on FreeBSD for instance)
// TCP stack could throttle write-write-read pattern because of Nagle.
if ( !$this->_Send ( $fp, pack ( "N", 1 ), 4 ) )
{
fclose ( $fp );
$this->_error = "failed to send client protocol version";
return false;
}
// check version
list(,$v) = unpack ( "N*", fread ( $fp, 4 ) );
$v = (int)$v;
if ( $v<1 )
{
fclose ( $fp );
$this->_error = "expected searchd protocol version 1+, got version '$v'";
return false;
}
return $fp;
}
/// get and check response packet from searchd server
function _GetResponse ( $fp, $client_ver )
{
$response = "";
$len = 0;
$header = fread ( $fp, 8 );
if ( strlen($header)==8 )
{
list ( $status, $ver, $len ) = array_values ( unpack ( "n2a/Nb", $header ) );
$left = $len;
while ( $left>0 && !feof($fp) )
{
$chunk = fread ( $fp, min ( 8192, $left ) );
if ( $chunk )
{
$response .= $chunk;
$left -= strlen($chunk);
}
}
}
if ( $this->_socket === false )
fclose ( $fp );
// check response
$read = strlen ( $response );
if ( !$response || $read!=$len )
{
$this->_error = $len
? "failed to read searchd response (status=$status, ver=$ver, len=$len, read=$read)"
: "received zero-sized searchd response";
return false;
}
// check status
if ( $status==SEARCHD_WARNING )
{
list(,$wlen) = unpack ( "N*", substr ( $response, 0, 4 ) );
$this->_warning = substr ( $response, 4, $wlen );
return substr ( $response, 4+$wlen );
}
if ( $status==SEARCHD_ERROR )
{
$this->_error = "searchd error: " . substr ( $response, 4 );
return false;
}
if ( $status==SEARCHD_RETRY )
{
$this->_error = "temporary searchd error: " . substr ( $response, 4 );
return false;
}
if ( $status!=SEARCHD_OK )
{
$this->_error = "unknown status code '$status'";
return false;
}
// check version
if ( $ver<$client_ver )
{
$this->_warning = sprintf ( "searchd command v.%d.%d older than client's v.%d.%d, some options might not work",
$ver>>8, $ver&0xff, $client_ver>>8, $client_ver&0xff );
}
return $response;
}
/////////////////////////////////////////////////////////////////////////////
// searching
/////////////////////////////////////////////////////////////////////////////
/// set offset and count into result set,
/// and optionally set max-matches and cutoff limits
function SetLimits ( $offset, $limit, $max=0, $cutoff=0 )
{
assert ( is_int($offset) );
assert ( is_int($limit) );
assert ( $offset>=0 );
assert ( $limit>0 );
assert ( $max>=0 );
$this->_offset = $offset;
$this->_limit = $limit;
if ( $max>0 )
$this->_maxmatches = $max;
if ( $cutoff>0 )
$this->_cutoff = $cutoff;
}
/// set maximum query time, in milliseconds, per-index
/// integer, 0 means "do not limit"
function SetMaxQueryTime ( $max )
{
assert ( is_int($max) );
assert ( $max>=0 );
$this->_maxquerytime = $max;
}
/// set matching mode
function SetMatchMode ( $mode )
{
assert ( $mode==SPH_MATCH_ALL
|| $mode==SPH_MATCH_ANY
|| $mode==SPH_MATCH_PHRASE
|| $mode==SPH_MATCH_BOOLEAN
|| $mode==SPH_MATCH_EXTENDED
|| $mode==SPH_MATCH_FULLSCAN
|| $mode==SPH_MATCH_EXTENDED2 );
$this->_mode = $mode;
}
/// set ranking mode
function SetRankingMode ( $ranker, $rankexpr="" )
{
assert ( $ranker===0 || $ranker>=1 && $ranker<SPH_RANK_TOTAL );
assert ( is_string($rankexpr) );
$this->_ranker = $ranker;
$this->_rankexpr = $rankexpr;
}
/// set matches sorting mode
function SetSortMode ( $mode, $sortby="" )
{
assert (
$mode==SPH_SORT_RELEVANCE ||
$mode==SPH_SORT_ATTR_DESC ||
$mode==SPH_SORT_ATTR_ASC ||
$mode==SPH_SORT_TIME_SEGMENTS ||
$mode==SPH_SORT_EXTENDED ||
$mode==SPH_SORT_EXPR );
assert ( is_string($sortby) );
assert ( $mode==SPH_SORT_RELEVANCE || strlen($sortby)>0 );
$this->_sort = $mode;
$this->_sortby = $sortby;
}
/// bind per-field weights by order
/// DEPRECATED; use SetFieldWeights() instead
function SetWeights ( $weights )
{
assert ( is_array($weights) );
foreach ( $weights as $weight )
assert ( is_int($weight) );
$this->_weights = $weights;
}
/// bind per-field weights by name
function SetFieldWeights ( $weights )
{
assert ( is_array($weights) );
foreach ( $weights as $name=>$weight )
{
assert ( is_string($name) );
assert ( is_int($weight) );
}
$this->_fieldweights = $weights;
}
/// bind per-index weights by name
function SetIndexWeights ( $weights )
{
assert ( is_array($weights) );
foreach ( $weights as $index=>$weight )
{
assert ( is_string($index) );
assert ( is_int($weight) );
}
$this->_indexweights = $weights;
}
/// set IDs range to match
/// only match records if document ID is beetwen $min and $max (inclusive)
function SetIDRange ( $min, $max )
{
assert ( is_numeric($min) );
assert ( is_numeric($max) );
assert ( $min<=$max );
$this->_min_id = $min;
$this->_max_id = $max;
}
/// set values set filter
/// only match records where $attribute value is in given set
function SetFilter ( $attribute, $values, $exclude=false )
{
assert ( is_string($attribute) );
assert ( is_array($values) );
assert ( count($values) );
if ( is_array($values) && count($values) )
{
foreach ( $values as $value )
assert ( is_numeric($value) );
$this->_filters[] = array ( "type"=>SPH_FILTER_VALUES, "attr"=>$attribute, "exclude"=>$exclude, "values"=>$values );
}
}
/// set range filter
/// only match records if $attribute value is beetwen $min and $max (inclusive)
function SetFilterRange ( $attribute, $min, $max, $exclude=false )
{
assert ( is_string($attribute) );
assert ( is_numeric($min) );
assert ( is_numeric($max) );
assert ( $min<=$max );
$this->_filters[] = array ( "type"=>SPH_FILTER_RANGE, "attr"=>$attribute, "exclude"=>$exclude, "min"=>$min, "max"=>$max );
}
/// set float range filter
/// only match records if $attribute value is beetwen $min and $max (inclusive)
function SetFilterFloatRange ( $attribute, $min, $max, $exclude=false )
{
assert ( is_string($attribute) );
assert ( is_float($min) );
assert ( is_float($max) );
assert ( $min<=$max );
$this->_filters[] = array ( "type"=>SPH_FILTER_FLOATRANGE, "attr"=>$attribute, "exclude"=>$exclude, "min"=>$min, "max"=>$max );
}
/// setup anchor point for geosphere distance calculations
/// required to use @geodist in filters and sorting
/// latitude and longitude must be in radians
function SetGeoAnchor ( $attrlat, $attrlong, $lat, $long )
{
assert ( is_string($attrlat) );
assert ( is_string($attrlong) );
assert ( is_float($lat) );
assert ( is_float($long) );
$this->_anchor = array ( "attrlat"=>$attrlat, "attrlong"=>$attrlong, "lat"=>$lat, "long"=>$long );
}
/// set grouping attribute and function
function SetGroupBy ( $attribute, $func, $groupsort="@group desc" )
{
assert ( is_string($attribute) );
assert ( is_string($groupsort) );
assert ( $func==SPH_GROUPBY_DAY
|| $func==SPH_GROUPBY_WEEK
|| $func==SPH_GROUPBY_MONTH
|| $func==SPH_GROUPBY_YEAR
|| $func==SPH_GROUPBY_ATTR
|| $func==SPH_GROUPBY_ATTRPAIR );
$this->_groupby = $attribute;
$this->_groupfunc = $func;
$this->_groupsort = $groupsort;
}
/// set count-distinct attribute for group-by queries
function SetGroupDistinct ( $attribute )
{
assert ( is_string($attribute) );
$this->_groupdistinct = $attribute;
}
/// set distributed retries count and delay
function SetRetries ( $count, $delay=0 )
{
assert ( is_int($count) && $count>=0 );
assert ( is_int($delay) && $delay>=0 );
$this->_retrycount = $count;
$this->_retrydelay = $delay;
}
/// set result set format (hash or array; hash by default)
/// PHP specific; needed for group-by-MVA result sets that may contain duplicate IDs
function SetArrayResult ( $arrayresult )
{
assert ( is_bool($arrayresult) );
$this->_arrayresult = $arrayresult;
}
/// set attribute values override
/// there can be only one override per attribute
/// $values must be a hash that maps document IDs to attribute values
function SetOverride ( $attrname, $attrtype, $values )
{
assert ( is_string ( $attrname ) );
assert ( in_array ( $attrtype, array ( SPH_ATTR_INTEGER, SPH_ATTR_TIMESTAMP, SPH_ATTR_BOOL, SPH_ATTR_FLOAT, SPH_ATTR_BIGINT ) ) );
assert ( is_array ( $values ) );
$this->_overrides[$attrname] = array ( "attr"=>$attrname, "type"=>$attrtype, "values"=>$values );
}
/// set select-list (attributes or expressions), SQL-like syntax
function SetSelect ( $select )
{
assert ( is_string ( $select ) );
$this->_select = $select;
}
//////////////////////////////////////////////////////////////////////////////
/// clear all filters (for multi-queries)
function ResetFilters ()
{
$this->_filters = array();
$this->_anchor = array();
}
/// clear groupby settings (for multi-queries)
function ResetGroupBy ()
{
$this->_groupby = "";
$this->_groupfunc = SPH_GROUPBY_DAY;
$this->_groupsort = "@group desc";
$this->_groupdistinct= "";
}
/// clear all attribute value overrides (for multi-queries)
function ResetOverrides ()
{
$this->_overrides = array ();
}
//////////////////////////////////////////////////////////////////////////////
/// connect to searchd server, run given search query through given indexes,
/// and return the search results
function Query ( $query, $index="*", $comment="" )
{
assert ( empty($this->_reqs) );
$this->AddQuery ( $query, $index, $comment );
$results = $this->RunQueries ();
$this->_reqs = array (); // just in case it failed too early
if ( !is_array($results) )
return false; // probably network error; error message should be already filled
$this->_error = $results[0]["error"];
$this->_warning = $results[0]["warning"];
if ( $results[0]["status"]==SEARCHD_ERROR )
return false;
else
return $results[0];
}
/// helper to pack floats in network byte order
function _PackFloat ( $f )
{
$t1 = pack ( "f", $f ); // machine order
list(,$t2) = unpack ( "L*", $t1 ); // int in machine order
return pack ( "N", $t2 );
}
/// add query to multi-query batch
/// returns index into results array from RunQueries() call
function AddQuery ( $query, $index="*", $comment="" )
{
// mbstring workaround
$this->_MBPush ();
// build request
$req = pack ( "NNNN", $this->_offset, $this->_limit, $this->_mode, $this->_ranker );
if ( $this->_ranker==SPH_RANK_EXPR )
$req .= pack ( "N", strlen($this->_rankexpr) ) . $this->_rankexpr;
$req .= pack ( "N", $this->_sort ); // (deprecated) sort mode
$req .= pack ( "N", strlen($this->_sortby) ) . $this->_sortby;
$req .= pack ( "N", strlen($query) ) . $query; // query itself
$req .= pack ( "N", count($this->_weights) ); // weights
foreach ( $this->_weights as $weight )