Generate Excel from SQL through PHP - php

Question

I am using the following code to generate excel from sql through php.this is a modeifed verion of the working code ..
WORKING CODE (NO ERROR)
<?php
//documentation on the spreadsheet package is at:
//http://pear.php.net/manual/en/package.fileformats.spreadsheet-excel-writer.php
chdir('phpxls');
require_once 'Writer.php';
chdir('..');
$sheet1 = array(
array('eventid','eventtitle' ,'datetime' ,'description' ,'notes' ),
array('5' ,'Education Seminar','2010-05-12 08:00:00','Increase your WPM','' ),
array('6' ,'Work Party' ,'2010-05-13 15:30:00','Boss\'s Bday' ,'bring tacos'),
array('7' ,'Conference Call' ,'2010-05-14 11:00:00','access code x4321','' ),
array('8' ,'Day Off' ,'2010-05-15' ,'Go to Home Depot' ,'' ),
);
$sheet2 = array(
array('eventid','funny_name' ),
array('32' ,'Adam Baum' ),
array('33' ,'Anne Teak' ),
array('34' ,'Ali Katt' ),
array('35' ,'Anita Bath' ),
array('36' ,'April Schauer'),
array('37' ,'Bill Board' ),
);
$workbook = new Spreadsheet_Excel_Writer();
$format_und =& $workbook->addFormat();
$format_und->setBottom(2);//thick
$format_und->setBold();
$format_und->setColor('black');
$format_und->setFontFamily('Arial');
$format_und->setSize(8);
$format_reg =& $workbook->addFormat();
$format_reg->setColor('black');
$format_reg->setFontFamily('Arial');
$format_reg->setSize(8);
$arr = array(
'Calendar'=>$sheet1,
'Names' =>$sheet2,
);
foreach($arr as $wbname=>$rows)
{
$rowcount = count($rows);
$colcount = count($rows[0]);
$worksheet =& $workbook->addWorksheet($wbname);
$worksheet->setColumn(0,0, 6.14);//setColumn(startcol,endcol,float)
$worksheet->setColumn(1,3,15.00);
$worksheet->setColumn(4,4, 8.00);
for( $j=0; $j<$rowcount; $j++ )
{
for($i=0; $i<$colcount;$i++)
{
$fmt =& $format_reg;
if ($j==0)
$fmt =& $format_und;
if (isset($rows[$j][$i]))
{
$data=$rows[$j][$i];
$worksheet->write($j, $i, $data, $fmt);
}
}
}
}
$workbook->send('test.xls');
$workbook->close();
//-----------------------------------------------------------------------------
?>
MODIFIED CODE TO RETRIEVE DATA FROM DATABASE (WHICH SHOWS ERROR)
<?php
$numrow12 = mysql_query("SELECT * FROM mastertable WHERE pdfstatus = 1 ORDER BY tstamp DESC");
mysql_select_db("brainoidultrafb", $link);
chdir('phpxls');
require_once 'Writer.php';
chdir('..');
while($row = mysql_fetch_array($numrow12)) {
$sheet1 = array(
array('StudentID','Students Email' ,'Diagnosis','TimeStamp' ,),
array($row['student_id'] ,$row['email_id'],$row['diagnosis'],$row['tstamp'],),
);
}
$workbook = new Spreadsheet_Excel_Writer();
$format_und =& $workbook->addFormat();
$format_und->setBottom(2);//thick
$format_und->setBold();
$format_und->setColor('black');
$format_und->setFontFamily('Arial');
$format_und->setSize(8);
$format_reg =& $workbook->addFormat();
$format_reg->setColor('black');
$format_reg->setFontFamily('Arial');
$format_reg->setSize(8);
$arr = array(
'Calendar'=>$sheet1,
);
foreach($arr as $wbname=>$rows)
{
$rowcount = count($rows);
$colcount = count($rows[0]);
$worksheet =& $workbook->addWorksheet($wbname);
$worksheet->setColumn(0,0, 6.14);//setColumn(startcol,endcol,float)
$worksheet->setColumn(1,3,15.00);
$worksheet->setColumn(4,4, 8.00);
for( $j=0; $j<$rowcount; $j++ )
{
for($i=0; $i<$colcount;$i++)
{
$fmt =& $format_reg;
if ($j==0)
$fmt =& $format_und;
if (isset($rows[$j][$i]))
{
$data=$rows[$j][$i];
$worksheet->write($j, $i, $data, $fmt);
}
}
}
}
$workbook->send('Submissions.xls');
$workbook->close();
//-----------------------------------------------------------------------------
?>
Its showing the following errors
Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given in /home/content/58/9508458/html/psychiatric/subexcel.php on line 13
Warning: Cannot modify header information - headers already sent by (output started at /home/content/58/9508458/html/psychiatric/subexcel.php:13) in /home/content/58/9508458/html/psychiatric/phpxls/Writer.php on line 67
Warning: Cannot modify header information - headers already sent by (output started at /home/content/58/9508458/html/psychiatric/subexcel.php:13) in /home/content/58/9508458/html/psychiatric/phpxls/Writer.php on line 68
Warning: Cannot modify header information - headers already sent by (output started at /home/content/58/9508458/html/psychiatric/subexcel.php:13) in /home/content/58/9508458/html/psychiatric/phpxls/Writer.php on line 69
Warning: Cannot modify header information - headers already sent by (output started at /home/content/58/9508458/html/psychiatric/subexcel.php:13) in /home/content/58/9508458/html/psychiatric/phpxls/Writer.php on line 70
Warning: Cannot modify header information - headers already sent by (output started at /home/content/58/9508458/html/psychiatric/subexcel.php:13) in /home/content/58/9508458/html/psychiatric/phpxls/Writer.php on line 71

Answer 1

Right now, you're selecting the database after you try to query the database:
$numrow12 = mysql_query("SELECT * FROM mastertable WHERE pdfstatus = 1 ORDER BY tstamp DESC");
mysql_select_db("brainoidultrafb", $link);
That won't work. Just swap the order so you select the database, then query it:
mysql_select_db("brainoidultrafb", $link);
$numrow12 = mysql_query("SELECT * FROM mastertable WHERE pdfstatus = 1 ORDER BY tstamp DESC");
As for your second problem, you're overwriting $sheet1 on each iteration of the loop. Do this instead:
$sheet1 = array(
array('StudentID','Students Email' ,'Diagnosis','TimeStamp' ,)
);
while($row = mysql_fetch_array($numrow12)) {
$sheet1[] = array($row['student_id'], $row['email_id'], $row['diagnosis'], $row['tstamp'],);
}

Answer 2

For your second problem use:
$sheet1[] =
To append elements to the $sheet1 array. You're currently replacing it after every iteration of the loop.
You'll probably want to initialize $sheet1 outside of the while loop to avoid warnings as well. $sheet1 = array();