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File indexing completed on 2024-04-06 12:23:16

 <?php
 /*
  * db_functions.php
  *
  * All the functions used to connect to and query the DB
  */
 
 require_once 'common.php';
 
 error_reporting(E_ALL);
 ini_set("display_errors","on");
 
 # Globals
 $conn = connect("");
 
 /* Connects to the database, returns connection handle */
 function & connect($location) {
   $params = get_conn_params($location);
   $db_user = $params['user'];
   $db_pass = $params['pass'];
   $db_sid  = $params['sid'];
 
   $conn = oci_connect($db_user, $db_pass, $db_sid);
 
   if (! $conn ) {
     echo "<h1>ERROR</h1>";
     echo "<p>Connection to DB failed.</p>";
     exit;
   }
 
   $stmt = oci_parse($conn, "ALTER SESSION SET NLS_DATE_FORMAT='YYYY-MM-DD HH24:MI:SS'");
   oci_execute($stmt);
 
   return $conn;
 }
 
 /* Returns a list of locations available from LOCATION_DEF */
 function get_loc_list() {
   global $conn;
 
   $sql = "SELECT DISTINCT location FROM location_def";
   $stmt = oci_parse($conn, $sql);
   oci_execute($stmt);
   oci_fetch_all($stmt, $results);
 
   return array_values($results['LOCATION']);
 }
 
 /* Returns a list of SM available from RUN_DAT */
 function get_sm_list() {
   global $conn;
 
   $sql = "SELECT DISTINCT cv.id1 SM FROM run_dat rdat 
                                  JOIN channelview cv ON rdat.logic_id = cv.logic_id 
                                       AND cv.name = 'EB_supermodule' 
                                       AND cv.name = cv.maps_to";
   $stmt = oci_parse($conn, $sql);
   oci_execute($stmt);
   oci_fetch_all($stmt, $results);
 
   return array_values($results['SM']);
 }
 
 
 /* Returns a list of run types available from RUN_TYPE_DEF */
 function get_runtype_list() {
   global $conn;
 
   $sql = "SELECT DISTINCT run_type FROM run_type_def";
   $stmt = oci_parse($conn, $sql);
   oci_execute($stmt);
   oci_fetch_all($stmt, $results);
 
   return array_values($results['RUN_TYPE']);
 }
 
 /* Returns a list of gen_tag available from RUN_TAG */
 function get_rungentag_list() {
   global $conn;
 
   $sql = "SELECT DISTINCT gen_tag FROM run_tag";
   $stmt = oci_parse($conn, $sql);
   oci_execute($stmt);
   oci_fetch_all($stmt, $results);
 
   return array_values($results['GEN_TAG']);
 }
 
 /* Returns the min and max run numbers available from RUN_IOV */
 function get_run_num_extents() {
   global $conn;
 
   $sql = "SELECT MIN(riov.run_num) min_run, MAX(riov.run_num) max_run 
            FROM run_iov riov 
            JOIN run_tag rtag ON riov.tag_id = rtag.tag_id
            JOIN run_type_def rdef ON rdef.def_id = rtag.run_type_id
           WHERE rdef.run_type != 'TEST'";
   $stmt = oci_parse($conn, $sql);
   oci_execute($stmt);
   return oci_fetch_assoc($stmt);
 }
 
 /* Returns the min and max run_start available from RUN_IOV */
 function get_run_date_extents() {
   global $conn;
 
   $sql = "SELECT MIN(riov.run_start) min_start, MAX(riov.run_start) max_start
            FROM run_iov riov 
            JOIN run_tag rtag ON riov.tag_id = rtag.tag_id
            JOIN run_type_def rdef ON rdef.def_id = rtag.run_type_id
           WHERE rdef.run_type != 'TEST'";
 
   $stmt = oci_parse($conn, $sql);
   oci_execute($stmt);
   return oci_fetch_assoc($stmt);
 }
 
 /* Returns an associative array of headers from the run query.  
    returns array($db_handle => $header) */
 function get_runselect_headers() {
   return array('RUN_NUM' => 'Run Number',
          'SM' => 'SM',
          'LOCATION' => 'Location',
          'RUN_TYPE' => 'Run Type',
          'CONFIG_TAG' => 'Run Config',
          'CONFIG_VER' => 'Config Ver',
          'RUN_GEN_TAG' => 'Gen Tag',
          'RUN_START' => 'Run Start',
          'RUN_END' => 'Run End',
          'NUM_EVENTS' => 'Events');
 }
 
 /* Returns an associative array of the run query.
   input $params is a set of options from the selection page
   returns array("sql" => The sql of the query, "binds" => a list of bind parameters) */
 function build_runselect_sql($params) {
   $selectfrom = "select loc.location, rtype.run_type, rconfig.config_tag, rconfig.config_ver, rtag.gen_tag run_gen_tag,
                         riov.iov_id run_iov_id, riov.run_num, riov.run_start, riov.run_end, riov.db_timestamp run_db_timestamp, 
                         rdat.num_events, cv.id1 SM
                    from location_def loc
                    join run_tag rtag on rtag.location_id = loc.def_id
                    join run_type_def rtype on rtype.def_id = rtag.run_type_id
                    join run_iov riov on riov.tag_id = rtag.tag_id 
                    left join run_dat rdat on rdat.iov_id = riov.iov_id 
                    left join run_config_dat rconfig on rconfig.iov_id = riov.iov_id
                    left join channelview cv on rdat.logic_id = cv.logic_id 
                         and cv.name = 'EB_supermodule'
                         and cv.name = cv.maps_to";
   
   $where = " WHERE loc.location = :location ";
 
   $binds = array(':location' => $params['location']);
 
   if ($params['SM'] != 'Any') {
     $where .= " AND (cv.id1 = :SM OR cv.name = 'ECAL')";
     $binds[':SM'] = $params['SM'];
   }
   if ($params['SM'] != 'Any'&& $params['CRYSTAL'] != 'Any' && $params['run_type'] == 'BEAM') {
     $selectfrom .=" left join run_h4_table_position_dat rtbdat on rtbdat.iov_id = riov.iov_id 
         left join channelview cv2 on rtbdat.logic_id = cv2.logic_id 
                         and cv2.name = 'EB_crystal_number'
                         and cv2.name = cv2.maps_to";
     $where .= " AND cv2.id1=:SM AND cv2.id2 = :CRYSTAL ";
     $binds[':SM'] = $params['SM'];
     $binds[':CRYSTAL'] = $params['CRYSTAL'];
   }
 
   if ($params['run_type'] == 'All except TEST') {
     $where .= " AND rtype.run_type != 'TEST'";
   } else if ($params['run_type'] != 'All') {
     $where .= " AND rtype.run_type = :run_type ";
     $binds[':run_type'] = $params['run_type'];
   }
 
   if ($params['run_gen_tag'] != 'All') {
     $where .= " AND rtag.gen_tag = :run_gen_tag ";
     $binds[':run_gen_tag'] = $params['run_gen_tag'];
   }
   
   if ($params['run_select'] == 'run_range') {
     $where .= " AND riov.run_num >= :min_run AND riov.run_num <= :max_run ";
     $binds[':min_run'] = $params['min_run'];
     $binds[':max_run'] = $params['max_run'];
   } elseif ($params['run_select'] == 'date_range') {
     $where .= " AND riov.run_start >= :min_start AND riov.run_start <= :max_start ";
     $binds[':min_start'] = $params['min_start'];
     $binds[':max_start'] = $params['max_start'];
   }
 
   $run_order = $params['run_order'];
   $orderby = " order by riov.run_num $run_order, rtype.run_type asc, rconfig.config_tag asc, rtag.gen_tag asc";
 
   $sql = $selectfrom.$where.$orderby;
 
   if ($params['run_select'] == 'last_100') {
     $sql = "select * from ($sql) where rownum < 101";
   }
 
   return array('sql' => $sql, 'binds' => $binds);
 }
 
 /* Returns the sum of the events given an sql string and binds from get_runselect_sql */
 function fetch_sum_events($runselect_output) {
   global $conn;
 
   $sql = $runselect_output['sql'];
   $binds = $runselect_output['binds'];
 
   $sql = "select sum(num_events) total_events from ($sql)";
 
   $stmt = oci_parse($conn, $sql);
 
   foreach($binds as $handle => $var) {
     oci_bind_by_name($stmt, $handle, $binds[$handle]);
   }
   
   oci_execute($stmt);
   $row = oci_fetch_row($stmt);
   return $row[0];
 }
 
 
 /* Returns an associative array of headers for the monitoring query
    returns array($db_handle => $header) */
 function get_monselect_headers() {
   return array('SUBRUN_NUM' => 'Subrun',
          'GEN_TAG' => 'General Tag',
          'MON_VER' => 'Monitoring Version',
          'SUBRUN_START' => 'Subrun Start',
          'SUBRUN_END' => 'Subrun End',
          'NUM_EVENTS' => 'Num Events');
 }
 
 /* Returns an associative array of headers for the LMF query
    returns array($db_handle => $header) */
 function get_lmfselect_headers() {
   return array('SUBRUN_NUM' => 'Subrun',
          'GEN_TAG' => 'General Tag',
          'SUBRUN_START' => 'Subrun Start',
          'SUBRUN_END' => 'Subrun End');
 }
 
 /* Returns an associative array of the monitoring query.
    input is an IOV_ID from RUN_IOV */
 function fetch_mon_data($run_iov_id) {
   global $conn;
 
   $sql = "select miov.iov_id, miov.subrun_num, miov.subrun_start, miov.subrun_end, mtag.gen_tag, mver.mon_ver,
                  mdat.num_events, mdat.task_list, mdat.task_outcome,
                  dat_exists('MON', miov.iov_id) dat_exists 
             from mon_run_iov miov
             join mon_run_tag mtag on mtag.tag_id = miov.tag_id 
             join mon_version_def mver on mver.def_id = mtag.mon_ver_id
             join mon_run_dat mdat on mdat.iov_id = miov.iov_id
            where miov.run_iov_id = :run_iov_id
            order by miov.subrun_num asc";
   
   $stmt = oci_parse($conn, $sql);
 
   oci_bind_by_name($stmt, ':run_iov_id', $run_iov_id);
   oci_execute($stmt);
   oci_fetch_all($stmt, $results);
   
   return $results;
 }
 
 /* Returns an associative array of the monitoring query.
    input is an IOV_ID from RUN_IOV */
 function fetch_las_data($run_iov_id) {
   global $conn;
 
   $sql = "select liov.iov_id, liov.subrun_num, liov.subrun_start, liov.subrun_end, ltag.gen_tag,
                  dat_exists('LMF', liov.iov_id) dat_exists 
             from lmf_run_iov liov
             join lmf_run_tag ltag on ltag.tag_id = liov.tag_id 
            where liov.run_iov_id = :run_iov_id
            order by liov.subrun_num asc";
   
   $stmt = oci_parse($conn, $sql);
 
   oci_bind_by_name($stmt, ':run_iov_id', $run_iov_id);
   oci_execute($stmt);
   oci_fetch_all($stmt, $results);
   
   return $results;
 }
 
 /* Returns an associative array of headers for the DCU query
    returns array($db_handle => $header) */
 function get_dcuselect_headers() {
   return array('SINCE' => 'Valid Since',
          'TILL' => 'Valid Until',
          'GEN_TAG' => 'General Tag');
 }
 
 /* Returns an associative array of the dcu query.
    input is an IOV_ID from RUN_IOV */
 function fetch_dcu_data($run_iov_id) {
   global $conn;
 
   // XXX better check this for correctness of boundries and efficiency later
   $sql = "select diov.iov_id, diov.since, diov.till, dtag.gen_tag,
                  dat_exists('DCU', diov.iov_id) dat_exists
             from dcu_iov diov, dcu_tag dtag, run_iov riov, run_tag rtag
            where diov.tag_id = dtag.tag_id
              and riov.iov_id = :run_iov_id
              and riov.tag_id = rtag.tag_id
              and rtag.location_id = dtag.location_id
              and ((diov.till >= riov.run_start and diov.till <= riov.run_end)
                   or (diov.since >= riov.run_start and diov.till <= riov.run_end)
                   or (diov.since <= riov.run_end and diov.since >= riov.run_start)
                   or (riov.run_start >= diov.since and riov.run_end <= diov.till))
            order by diov.since asc";
 
   $stmt = oci_parse($conn, $sql);
 
   oci_bind_by_name($stmt, ':run_iov_id', $run_iov_id);
   oci_execute($stmt);
   oci_fetch_all($stmt, $results);
   
   return $results;
 }
 
 function get_beamselect_headers() {
   return array('BEAM_FILE' => 'Beam File',
          'ENERGY' => 'Energy',
          'PARTICLE' => 'Particle',
          'SPECIAL_SETTINGS' => 'Special Settings');
 }
 
 function fetch_all_beam_data( $run_num, $loc) {
   global $conn;
   
   if ($loc == 'H4B') {
     $beamtable = "RUN_H4_BEAM_DAT";
   } elseif ($loc == 'H2') {
     $beamtable = "RUN_H2_BEAM_DAT";
   } else {
     return array();
   }
 
   $sql = "select * from $beamtable bdat, run_iov riov where bdat.iov_id=riov.iov_id and riov.run_num = :run ";
 
   $stmt = oci_parse($conn, $sql);
   
   oci_bind_by_name($stmt, ':run', $run_num);
   oci_execute($stmt);
   oci_fetch_all($stmt, $results);
   
   return $results;
 }
 
 function fetch_beam_data($run, $loc) {
   global $conn;
   
   if ($loc == 'H4B') {
     $beamtable = "RUN_H4_BEAM_DAT";
     $beamcol = "\"XBH4.BEAM:LAST_FILE_LOADED\"";
   } elseif ($loc == 'H2') {
     $beamtable = "RUN_H2_BEAM_DAT";
     $beamcol = "\"XBH2.BEAM:LAST_FILE_LOADED\"";
   } else {
     return array();
   }
 
   $sql = "select * from 
             (select rownum R, riov.run_num, bdat.$beamcol beam_file, bdef.energy, bdef.particle, bdef.special_settings
                from ($beamtable bdat
                join run_iov riov on bdat.iov_id = riov.iov_id)
                left outer join beamfile_to_energy_def bdef on bdef.beam_file = bdat.$beamcol
               where riov.run_num <= :run
               order by riov.run_num desc)
            where rownum = 1 ";
 
   $stmt = oci_parse($conn, $sql);
   
   oci_bind_by_name($stmt, ':run', $run);
   oci_execute($stmt);
   oci_fetch_all($stmt, $results);
   
   return $results;
 }
 
 
 /* Returns a general pupose SQL statement for querying a MON_ table
    Required bind is :iov_id, the iov_id in the MON_ table
    Additional binds can be added to the $where clause
    This function takes "channelview.ID1" from the data in the RUN_DAT table
      NOT from the data table.  This is a temporary solution while the DQM does not
      write the SM number
    This function performs no checks that the sql is valid
  */
 function build_mon_dataset_sql($table, $where = NULL, $order = NULL) {
     $sql = "SELECT
             riov.run_num run,
             cv2.id1,
             cv.id2,
             cv.id3,
             dat.*
           FROM ( $table dat
                  JOIN channelview cv ON cv.logic_id = dat.logic_id AND cv.name = cv.maps_to
                  JOIN mon_run_iov miov ON miov.iov_id = dat.iov_id
                  JOIN run_iov riov ON riov.iov_id = miov.run_iov_id )
                LEFT OUTER JOIN run_dat rdat ON rdat.iov_id = riov.iov_id
                LEFT OUTER JOIN channelview cv2 ON cv2.logic_id = rdat.logic_id AND cv2.name = cv2.maps_to
           WHERE miov.iov_id = :iov_id";
 
   if ($where) {
     $sql .= " AND ".$where;
   }
 
   if ($order) {
     $sql .= " ORDER BY ".join(", ", $order);
   } else {
     $sql .= " ORDER BY run, id1, id2, id3";   
   }
 
   return $sql;
 }
 
 
 
 function fetch_mon_dataset_headers($table) {
   global $conn;
 
   $headers = array();
   $headers['RUN'] = 'Run';
   
   $table_meta = fetch_table_meta($table);
   $field_meta = fetch_field_meta($table);
   $chan_meta = fetch_channel_meta($table_meta['LOGIC_ID_NAME']);
 
   foreach(array('ID1NAME' => 'ID1', 'ID2NAME' => 'ID2', 'ID3NAME' => 'ID3') as $name => $col) {
     if ($chan_meta[$name]) {
       $headers[$col] = $chan_meta[$name];
     }
   }
 
   foreach($field_meta as $field => $meta) {
     $headers[$field] = $meta['LABEL'];
   }
 
   return $headers;
 }
 
 
 
 function fetch_mon_dataset_data($table, $iov_id, $where = NULL, $additional_binds = NULL, $order = NULL) {
   global $conn;
 
   $sql = build_mon_dataset_sql($table, $where, $order);
   $stmt = oci_parse($conn, $sql);
   
   oci_bind_by_name($stmt, ':iov_id', $iov_id);
 
   if ($additional_binds) {
     foreach ($additional_binds as $bind_var => $bind_val) {
       oci_bind_by_name($stmt, $bind_var, $bind_val);
     }
   }
 
   oci_execute($stmt);
   oci_fetch_all($stmt, $results);
   return $results;
 }
 
 
 
 function fetch_table_meta($table) {
   global $conn;
 
   $sql = "select * from cond_table_meta where table_name = :1";
   $stmt = oci_parse($conn, $sql);
   oci_bind_by_name($stmt, ':1', $table);
   oci_execute($stmt);
   $results = oci_fetch_assoc($stmt);
   return $results;
 }
 
 
 
 function fetch_field_meta($table) {
   global $conn;
 
   $sql = "select f.*
            from cond_table_meta t 
            join cond_field_meta f on f.tab_id = t.def_id 
            where t.table_name = :1
            order by table_name, field_name";
 
   $stmt = oci_parse($conn, $sql);
   oci_bind_by_name($stmt, ':1', $table);
   oci_execute($stmt);
   $results = array();
   while ($row = oci_fetch_assoc($stmt)) {
     $field = $row['FIELD_NAME'];
     unset($row['FIELD_NAME']);
     $results[$field] = $row;
   }
   return $results;
 }
 
 
 
 function fetch_channel_meta($name) {
   global $conn;
 
   $sql = "select * from viewdescription where name = :1";
 
   $stmt = oci_parse($conn, $sql);
   oci_bind_by_name($stmt, ':1', $name);
   oci_execute($stmt);
   $results = oci_fetch_assoc($stmt);
   return $results;
 }
 
 
 
 function fetch_field_array($prefix) {
   global $conn;
 
   $sql = "select table_name, field_name 
            from cond_table_meta t 
            join cond_field_meta f on f.tab_id = t.def_id 
            where t.table_name like :1 and f.is_plottable = 1
            order by table_name, field_name";
 
   $stmt = oci_parse($conn, $sql);
   
   $like = $prefix.'%';
 
   oci_bind_by_name($stmt, ':1', $like);
   oci_execute($stmt);
 
   $results = array();
   while ($row = oci_fetch_array($stmt)) {
     if (!isset($results[$row[0]])) { $results[$row[0]] = array(); }
     array_push($results[$row[0]], $row[0].".".$row[1]);
   }
 
   return $results;
 }
 
 function fetch_plot_data($table, $field, $iov_id) {
   global $conn;
 
   $sql = "select $field from $table where iov_id = :iov_id";
 
   $stmt = oci_parse($conn, $sql);
   
   oci_bind_by_name($stmt, ':iov_id', $iov_id);
   oci_execute($stmt);
 
   oci_fetch_all($stmt, $results);
 
   return $results;
 }
 
 function db_fetch_plot_params($table, $field) {
   global $conn;
   
   $sql = "select t.filled_by, t.content_explanation table_content, t.logic_id_name, t.map_by_logic_id_name, t.logic_id_explanation, 
                 f.is_plottable, f.field_type, f.content_explanation field_content, f.label, f.histo_min, f.histo_max
            from cond_table_meta t join cond_field_meta f on t.def_id = f.tab_id 
           where t.table_name = :1 and f.field_name = :2";
   
   $stmt = oci_parse($conn, $sql);
 
   oci_bind_by_name($stmt, ':1', $table);
   oci_bind_by_name($stmt, ':2', $field);
 
   oci_execute($stmt);
 
   if ($row = oci_fetch_assoc($stmt)) {
     return $row;    
   } else { 
     return 0; 
   }
 }
 
 
 function db_make_rootplot($table, $field, $iov_id, $plottype, $name) {
   global $conn;
 
   $plot_params = db_fetch_plot_params($table, $field);
   $fmt = "png";
   $title = $plot_params['FIELD_CONTENT'];
   $chan_name = $plot_params['LOGIC_ID_NAME'];
   $map_name = $plot_params['MAP_BY_LOGIC_ID_NAME'];
 
   if ($plottype == 'histo_all') { 
     $type = 'TH1F'; $grp = 0;
     $sql = "select $field from $table where iov_id = :iov_id";
     $xtitle = $plot_params['LABEL'];
     $ytitle = "";
   } elseif ($plottype == 'histo_grp') {
     $type = 'TH1F'; $grp = 1;
     $sql = "select vd.id1name, cv.id1, d.$field from $table d, channelview cv, viewdescription vd
              where d.iov_id = :iov_id 
                and d.logic_id = cv.logic_id
                and cv.name = cv.maps_to
                and cv.name = vd.name
              order by cv.id1, cv.id2, cv.id3";
     $xtitle = $plot_params['LABEL'];
     $ytitle = "";
   } elseif ($plottype == 'graph_all') {
     $type = 'TGraph'; $grp = 0;
     $sql = "select rownum, $field
               from (select d.$field from $table d, channelview cv
                      where d.iov_id = :iov_id 
                        and d.logic_id = cv.logic_id
                        and cv.name = cv.maps_to
                      order by cv.id1, cv.id2, cv.id3)";
     $xtitle = $plot_params['LOGIC_ID_EXPLANATION'];
     $ytitle = $plot_params['LABEL'];
   } elseif ($plottype == 'graph_grp') { 
     $type = 'TGraph'; $grp = 1;
     $sql = "select id1name, id1, rownum, $field
               from (select vd.id1name, cv.id1, d.$field from $table d, channelview cv, viewdescription vd
                      where d.iov_id = :iov_id 
                        and d.logic_id = cv.logic_id
                        and cv.name = cv.maps_to
                        and cv.name = vd.name
                      order by cv.id1, cv.id2, cv.id3)";
     $xtitle = $plot_params['LOGIC_ID_EXPLANATION'];
     $ytitle = $plot_params['LABEL'];
   } elseif ($plottype == 'map_all') {
     //    if (!$map_name) { echo "No map_name.";  return 0; } // Cannot map without an _index type mapping
     $type = 'Map'; $grp = 1;
     $sql = "select id1name, id1, rownum, $field
               from (select vd.id1name, cv.id1, d.$field from $table d, channelview cv, viewdescription vd
                      where d.iov_id = :iov_id 
                        and d.logic_id = cv.logic_id
                        and cv.name = 'EB_crystal_number'
                        and cv.name = vd.name
                      order by cv.id1, cv.id2, cv.id3)";
     $xtitle = "";
     $ytitle = "";
   } else { die("Unknown plottype"); }
 
   $stmt = oci_parse($conn, $sql);
 
   oci_bind_by_name($stmt, ':iov_id', $iov_id);
   oci_execute($stmt);
 
   $n = 0;
   $names = array();
   $rptitle = $title;
   $rpname = $name;
 
   while ($row = oci_fetch_row($stmt)) {
     // Augment titles and file names if there is grouping
     if ($grp) {
       $grp_name = array_shift($row);
       $curr_grp = array_shift($row);
     }
 
     // If the group is over add finish the last plot
     if ($n != 0 && $grp && ($last_grp != $curr_grp)) {
       array_push($names, $rpname);
       pclose($rootplot);
     }
 
     // Open a rootplot handle if it is the first row or the group changed
     if ($n == 0 ||
   ($grp && ($last_grp != $curr_grp))) {
 
       if ($grp) {
   $rptitle = $title." ($grp_name $curr_grp)";
   $rpname = $name.".$grp_name$curr_grp";
       }
 
       $histo_min = $plot_params['HISTO_MIN'];
       $histo_max = $plot_params['HISTO_MAX'];
 
       $rootplot = get_rootplot_handle("-T \"$rptitle\" -X \"$xtitle\" -Y \"$ytitle\" $type $fmt $rpname $histo_min $histo_max");
       if ( ! $rootplot || get_rootplot_error() ) { return 0; }
     }
 
     // Write a row of data to the rootplot handle
     $dataline = join(' ', $row)."\n";
 
     fwrite($rootplot, $dataline);
 
     // Increment
     $n++;
     if ($grp) { $last_grp = $curr_grp; }
   }
   // Close the last plot
   array_push($names, $rpname);
   pclose($rootplot);
   
   if ($n == 0) {
     echo "N is zero";
   }
 
   if (get_rootplot_error() || $n == 0) {
     return 0;
   }
 
   return $names;
 }
 
 ?>

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