ZhClient.php

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<?php

class ZhClient {
        var $mHost, $mPort, $mFP, $mConnected;

        function __construct( $host, $port ) {
                $this->mHost = $host;
                $this->mPort = $port;
                $this->mConnected = $this->connect();
        }

        function isconnected() {
                return $this->mConnected;
        }

        function connect() {
                wfSuppressWarnings();
                $errno = $errstr = '';
                $this->mFP = fsockopen( $this->mHost, $this->mPort, $errno, $errstr, 30 );
                wfRestoreWarnings();
                return !$this->mFP;
        }

        function query( $request ) {
                if ( !$this->mConnected ) {
                        return false;
                }

                fwrite( $this->mFP, $request );

                $result = fgets( $this->mFP, 1024 );

                list( $status, $len ) = explode( ' ', $result );
                if( $status == 'ERROR' ) {
                        // $len is actually the error code...
                        print "zhdaemon error $len<br />\n";
                        return false;
                }
                $bytesread = 0;
                $data = '';
                while( !feof( $this->mFP ) && $bytesread < $len ) {
                        $str = fread( $this->mFP, $len - $bytesread );
                        $bytesread += strlen( $str );
                        $data .= $str;
                }
                // data should be of length $len. otherwise something is wrong
                return strlen( $data ) == $len;
        }

        function convert( $text, $tolang ) {
                $len = strlen( $text );
                $q = "CONV $tolang $len\n$text";
                $result = $this->query( $q );
                if ( !$result ) {
                        $result = $text;
                }
                return $result;
        }

        function convertToAllVariants( $text ) {
                $len = strlen( $text );
                $q = "CONV ALL $len\n$text";
                $result = $this->query( $q );
                if ( !$result ) {
                        return false;
                }
                list( $infoline, $data ) = explode( '|', $result, 2 );
                $info = explode( ';', $infoline );
                $ret = array();
                $i = 0;
                foreach( $info as $variant ) {
                        list( $code, $len ) = explode( ' ', $variant );
                        $ret[strtolower( $code )] = substr( $data, $i, $len );
                        $i += $len;
                }
                return $ret;
        }

        function segment( $text ) {
                $len = strlen( $text );
                $q = "SEG $len\n$text";
                $result = $this->query( $q );
                if ( !$result ) { // fallback to character based segmentation
                        $result = $this->segment( $text );
                }
                return $result;
        }

        function close() {
                fclose( $this->mFP );
        }
}