php - The results of 2 queries in one while loop -

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i want plot 3 dataseries in jquery flot first 2 series snowdepth in last 10 weeks (upper , lower mountain). last 1 snowdepth upper slopes 1 year earlier. use 2 queries exercice , want merge results 1 while loop. have far dataseries stay empty (d1,d2,d5). doing wrong?

$yrwk = $curryear . $currweek; $rquery21 = "select wk, yr, snow_valley, snow_mountain sv_cond_vw res_id=$res_id , yrwk<$yrwk order yrwk desc limit 11"; $rresult21 = mysql_query($rquery21);  $lyrwk = $lastyear . $currweek; $lquery21 = "select snow_mountain sv_cond_vw res_id=$res_id , yrwk<$yrwk order lyrwk desc limit 11"; $lresult21 = mysql_query($lquery21);  while ($rows21 = mysql_fetch_array($rresult21) && $lrows21 = mysql_fetch_array($lresult21)) { $wk = $rows21['wk']; $yr = $rows21['yr'];  $wk=date('d-m-y', getdatefromweek($wk, $yr)); $wk = strtotime($wk); $wk=$wk*1000;  $snow_mnt = $rows21['snow_mountain']; $snow_val = $rows21['snow_valley']; $d1 .= '[' . $wk . ',' . $snow_mnt . '],'; $d2 .= '[' . $wk . ',' . $snow_val . '],';  $lsnow_mnt = $lrows21['snow_mountain']; $d5 .= '[' . $wk . ',' . $lsnow_mnt . '],'; }

assuming queries work, think should change '&&' 'and' '&&' has higher precedence '=' , $rows21 not set properly.


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