php - Browser hangs and crashes when using a while loop -


i executing 2 queries , evaluating following conditions each record:

  • if $production_query->row->0 equal $jobcard_query->row->0
  • if $production_query->row->1 equal $jobcard_query->row->1

when true, should display results of $production_query.

however, when using while statement, browser takes long time respond , crashes.

can suggest solution?

my code:

$query = " select job_card_num , die_qty,id sample_jobcard order id desc” $production_query = mysql_query($query,$connection1); $query1 = "select job_card_num , die_qty,id com_jobcard order id desc "; $jobcard_query = mysql_query($query1,$connection1); while ($row = mysql_fetch_array($production_query)) {     while(  $row1 = mysql_fetch_array($jobcard_query))     {         while (($row1[0] == $row[0]) && ($row1[1] == $row[1]))         {             echo $row[0] . $row[1]. $row[2]'<br>';         }     } }

try changing query this:

$query = "select sample_jobcard.job_card_num jobcardnum, sample_jobcard.die_qty dieqty, sample_jobcard.id jid, com_jobcard.job_card_num, com_jobcard.die_qty, com_jobcard.id sample_jobcard      join com_jobcard on sample_jobcard.job_card_num = com_jobcard.job_card_num , sample_jobcard.die_qty = com_jobcard.die_qty order sample_jobcard.id desc";  $jobcard_query = mysql_query($query);  if($jobcard_query && mysql_num_rows($jobcard_query) > 0) {     while ($row = mysql_fetch_array($jobcard_query))      {         echo $row['jobcardnum']." ".$row['dieqty']." ".$row['jid']."<br>";     } }

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