Re: [PHP] can't retrieve more than 1 record at the time still
2009/12/14 Catherine Madsen cmad...@berkeley.edu:
Hi Again,
Following the suggestions I received from a earlier post, I've closed the
statement
while ($stmt-fetch(PDO::FETCH_BOUND))
before $stmt = NULL;
I don't get an error anymore, but still retrieve only one record.
To check that the array was being filled correctly, I inserted in several
places $ncand = count($_SESSION['numberCand']);
$ndocid = count($_SESSION['DOCIDs']);
and the count is always 0 for $ndocid and 1 for $ncand.
Now I believe that the array is not being filled, and that's why only the
last record gets processed. Can anybody see what I'm doing wrong in the for
each statement? The updated code is below.
Thank you for your help.
Catherine
Earlier message:
I'm really in need of help. I'm not a PHP programmer, but I've been given
the privilege of customizing a script written by somebody else and can't get
it to work right. I have to query 2 different tables in 2 different Oracle
10G DBs, one's mine (my_schema.my_table), the other (otherdb.other_table)
belongs to another department. In my_table, I have the doc_id and the
app_id for a record. In other_table there's the doc_id and pdf to
retrieve. The goal is to make a PDF file from each BLOB in other_table and
store them in the right directory under hash(app_id). PDO has been
installed and working, and I can connect to both DBs without a problem. If
my query limits the retrieval to one record, the script works, but if I try
to run it for all records, one pdf file is correctly created in the right
directory then I get the following error: PHP Fatal error: Call to a
member function fetch() on a non-object in /my_location/my_script.php on
line 154. It the while ($stmt-fetch(PDO::FETCH_BOUND)) line. I've
pasted my script below. I thought my problem was that maybe I was in the
wrong directory after creation of the first pdf, but several tries changing
the directory didn't make a difference. Right now, I'm running the script
at the command line. Soon I'm going to have a few hundred records to deal
with and cannot do it one by one! Any help would be very much appreciated.
Thank you!
?php
/* First Oracle DB connection info removed */
try
{
$dbh1 = new PDO(oci:dbname=.$tns1,$db1_username,$db1_password);
}
catch(PDOException $e)
{
echo ($e-getMessage());
exit;
}
if (empty($_SESSION['docIDs']))
{
$_SESSION['DOCIDs'] = array();
$_SESSION['msgs'] = array();
$sql = SELECT COUNT(*) all_rec FROM myschema.mytable
where academic_year = 2010;
$_SESSION['numberCand'] = 0; /* initialize ctr for stack popping */
$_SESSION['PHPulled'] = 0; /* number new personal histories pulled */
if ($res = $dbh1-query($sql))
{
/* Check the number of rows that match the SELECT statement */
if ($res-fetchColumn() 0)
{
/* Issue the real SELECT statement and work with the
results */
$sql = select doc_id, app_id
from myschema.mytable
where academic_year = 2010;
foreach ($dbh1-query($sql) as $row)
{
$cand = array();
$cand['DOC_ID']= $row['DOC_ID'];
$cand['APP_ID'] = $row['APP_ID'];
$_SESSION['DOC_IDS'][] = $cand;
}
}
$ncand = count($_SESSION['numberCand']);
$ndocid = count($_SESSION['DOCIDs']);
print Cand Number: . $ncand . \n;
print DOCid Number: . $ndocid . \n;
}
}
if (!empty($_SESSION['DOC_IDS']) and $_SESSION['numberCand']
count($_SESSION['DOC_IDS']))
{
$ncand = count($_SESSION['numberCand']);
$ndocid = count($_SESSION['DOCIDs']);
print Cand Number: . $ncand . \n;
print DOCid Number: . $ndocid . \n;
/* if have doc_IDs, pick next one off array */
$cand = $_SESSION['DOC_IDS'][$_SESSION['numberCand']];
if ($cand['DOC_ID'] == 0)
{ /* redirect to self to get next candidate with updated numberCand */
$_SESSION['numberCand'] = $_SESSION['numberCand'] + 1;
exit;
}
$dirname = md5($cand['APP_ID']);
$curdir = '/my_location/'.$dirname;
print App_id/Dir: . $row['APP_ID'] . $curdir . \n;
if (!(is_dir($curdir)))
{
if (!mkdir($curdir,0775))
print error: . $curdir . \n;
exit;
}
/* Second Oracle DB connection info removed */
try
{
$dbh2 = new
PDO(oci:dbname=.$tns2,$db2_username,$db2_password);
}
catch(PDOException $e)
{
echo ($e-getMessage());
exit;
}
$stmt = $dbh2-prepare('select PERSONAL_HIST_PDF_CONTENT from
Re: [PHP] can't retrieve more than 1 record at the time still
Thank you so much for sending me in the right direction. I've
re-written the first part of the script using PDO statements and it
works great.
Catherine
Richard Quadling wrote:
2009/12/14 Catherine Madsen cmad...@berkeley.edu:
Hi Again,
Following the suggestions I received from a earlier post, I've closed the
statement
while ($stmt-fetch(PDO::FETCH_BOUND))
before $stmt = NULL;
I don't get an error anymore, but still retrieve only one record.
To check that the array was being filled correctly, I inserted in several
places $ncand = count($_SESSION['numberCand']);
$ndocid = count($_SESSION['DOCIDs']);
and the count is always 0 for $ndocid and 1 for $ncand.
Now I believe that the array is not being filled, and that's why only the
last record gets processed. Can anybody see what I'm doing wrong in the for
each statement? The updated code is below.
Thank you for your help.
Catherine
Earlier message:
I'm really in need of help. I'm not a PHP programmer, but I've been given
the privilege of customizing a script written by somebody else and can't get
it to work right. I have to query 2 different tables in 2 different Oracle
10G DBs, one's mine (my_schema.my_table), the other (otherdb.other_table)
belongs to another department. In my_table, I have the doc_id and the
app_id for a record. In other_table there's the doc_id and pdf to
retrieve. The goal is to make a PDF file from each BLOB in other_table and
store them in the right directory under hash(app_id). PDO has been
installed and working, and I can connect to both DBs without a problem. If
my query limits the retrieval to one record, the script works, but if I try
to run it for all records, one pdf file is correctly created in the right
directory then I get the following error: PHP Fatal error: Call to a
member function fetch() on a non-object in /my_location/my_script.php on
line 154. It the while ($stmt-fetch(PDO::FETCH_BOUND)) line. I've
pasted my script below. I thought my problem was that maybe I was in the
wrong directory after creation of the first pdf, but several tries changing
the directory didn't make a difference. Right now, I'm running the script
at the command line. Soon I'm going to have a few hundred records to deal
with and cannot do it one by one! Any help would be very much appreciated.
Thank you!
?php
/* First Oracle DB connection info removed */
try
{
$dbh1 = new PDO(oci:dbname=.$tns1,$db1_username,$db1_password);
}
catch(PDOException $e)
{
echo ($e-getMessage());
exit;
}
if (empty($_SESSION['docIDs']))
{
$_SESSION['DOCIDs'] = array();
$_SESSION['msgs'] = array();
$sql = SELECT COUNT(*) all_rec FROM myschema.mytable
where academic_year = 2010;
$_SESSION['numberCand'] = 0; /* initialize ctr for stack popping */
$_SESSION['PHPulled'] = 0; /* number new personal histories pulled */
if ($res = $dbh1-query($sql))
{
/* Check the number of rows that match the SELECT statement */
if ($res-fetchColumn() 0)
{
/* Issue the real SELECT statement and work with the
results */
$sql = select doc_id, app_id
from myschema.mytable
where academic_year = 2010;
foreach ($dbh1-query($sql) as $row)
{
$cand = array();
$cand['DOC_ID']= $row['DOC_ID'];
$cand['APP_ID'] = $row['APP_ID'];
$_SESSION['DOC_IDS'][] = $cand;
}
}
$ncand = count($_SESSION['numberCand']);
$ndocid = count($_SESSION['DOCIDs']);
print Cand Number: . $ncand . \n;
print DOCid Number: . $ndocid . \n;
}
}
if (!empty($_SESSION['DOC_IDS']) and $_SESSION['numberCand']
count($_SESSION['DOC_IDS']))
{
$ncand = count($_SESSION['numberCand']);
$ndocid = count($_SESSION['DOCIDs']);
print Cand Number: . $ncand . \n;
print DOCid Number: . $ndocid . \n;
/* if have doc_IDs, pick next one off array */
$cand = $_SESSION['DOC_IDS'][$_SESSION['numberCand']];
if ($cand['DOC_ID'] == 0)
{ /* redirect to self to get next candidate with updated numberCand */
$_SESSION['numberCand'] = $_SESSION['numberCand'] + 1;
exit;
}
$dirname = md5($cand['APP_ID']);
$curdir = '/my_location/'.$dirname;
print App_id/Dir: . $row['APP_ID'] . $curdir . \n;
if (!(is_dir($curdir)))
{
if (!mkdir($curdir,0775))
print error: . $curdir . \n;
exit;
}
/* Second Oracle DB connection info removed */
try
{
$dbh2 = new
PDO(oci:dbname=.$tns2,$db2_username,$db2_password);
}
catch(PDOException $e)
{
echo ($e-getMessage());
exit;
}
[PHP] can't retrieve more than 1 record at the time
Hi,
I'm really in need of help. I'm not a PHP programmer, but I've been
given the privilege of customizing a script written by somebody else and
can't get it to work right. I have to query 2 different tables in 2
different Oracle 10G DBs, one's mine (my_schema.my_table), the other
(otherdb.other_table) belongs to another department. In my_table, I
have the doc_id and the app_id for a record. In other_table there's the
doc_id and pdf to retrieve. The goal is to make a PDF file from each
BLOB in other_table and store them in the right directory under
hash(app_id). PDO has been installed and working, and I can connect to
both DBs without a problem. If my query limits the retrieval to one
record, the script works, but if I try to run it for all records, one
pdf file is correctly created in the right directory then I get the
following error: PHP Fatal error: Call to a member function fetch() on
a non-object in /my_location/my_script.php on line 154. It the while
($stmt-fetch(PDO::FETCH_BOUND)) line. I've pasted my script below. I
thought my problem was that maybe I was in the wrong directory after
creation of the first pdf, but several tries changing the directory
didn't make a difference. Right now, I'm running the script at the
command line. Soon I'm going to have a few hundred records to deal with
and cannot do it one by one! Any help would be very much appreciated.
Thank you!
?php
/* First Oracle DB connection info removed */
try
{
$dbh1 = new PDO(oci:dbname=.$tns1,$db1_username,$db1_password);
}
catch(PDOException $e)
{
echo ($e-getMessage());
exit;
}
if (empty($_SESSION['docIDs']))
{
$_SESSION['DOCIDs'] = array();
$_SESSION['msgs'] = array();
$sql = SELECT COUNT(*) all_rec FROM myschema.my_table
where academic_year = 2010;
$_SESSION['numberCand'] = 0; /* initialize ctr for stack popping */
$_SESSION['PHPulled'] = 0; /* number new personal histories pulled */
if ($res = $dbh1-query($sql))
{
/* Check the number of rows that match the SELECT statement */
if ($res-fetchColumn() 0)
{
/* Issue the real SELECT statement and work with the results */
$sql = select doc_id, app_id
from myschema.my_table
where academic_year = 2010;
foreach ($dbh1-query($sql) as $row)
{
$cand = array();
$cand['DOC_ID']= $row['DOC_ID'];
$cand['APP_ID'] = $row['APP_ID'];
$_SESSION['DOC_IDS'][] = $cand;
}
}
}
}
if (!empty($_SESSION['DOC_IDS']) and $_SESSION['numberCand']
count($_SESSION['DOC_IDS']))
{
/* if have doc_IDs, pick next one off array */
$cand = $_SESSION['DOC_IDS'][$_SESSION['numberCand']];
if ($cand['DOC_ID'] == 0)
{ /* redirect to self to get next candidate with updated numberCand */
$_SESSION['numberCand'] = $_SESSION['numberCand'] + 1;
exit;
}
$dirname = md5($cand['APP_ID']);
$curdir = '/my_location/'.$dirname;
print App_id/Dir: . $row['APP_ID'] . $curdir . \n;
if (!(is_dir($curdir)))
{
if (!mkdir($curdir,0775))
print error: . $curdir . \n;
exit;
}
/* Second Oracle DB connection info removed */
try
{
$dbh2 = new PDO(oci:dbname=.$tns2,$db2_username,$db2_password);
}
catch(PDOException $e)
{
echo ($e-getMessage());
exit;
}
$stmt = $dbh2-prepare('select PDF from otherdb.other_table where
DOC_ID = :id');
$stmt-bindParam(':id', $cand['DOC_ID'], PDO::PARAM_INT);
$stmt-bindColumn(1, $PDF, PDO::PARAM_LOB);
$stmt-execute();
if (!(chdir($curdir)))
{
$_SESSION['msgs'][] = 'Could not change to '.$curdir;
continue;
}
$cnt = 0;
while ($stmt-fetch(PDO::FETCH_BOUND))
{
$filename = 'phs-'.$cnt.'.pdf';
if (!file_exists($filename))
{ /* if file not already there, write file with BLOB contents */
$fh = fopen($filename, 'w');
fwrite($fh, stream_get_contents($PDF));
fclose($fh);
/* add to $_SESSION['PHPulled'] for each new file saved */
$_SESSION['PHPulled'] = $_SESSION['PHPulled'] + 1;
}
/* increment stack counter */
$_SESSION['numberCand'] = $_SESSION['numberCand'] + 1;
$stmt = NULL; /* release the connection */
/*if not done with stack, redirect to self to get next*/
if (!empty($_SESSION['DOCIDs']) and
$_SESSION['numberCand'] count($_SESSION['DOCIDs']))
{
exit;
}
}
}
/* once done, go back to display search page after clearing stack
if(isset($_SESSION['DOCIDs']))
unset($_SESSION['DOCIDs'] );*/
$res = null;
$dbh1 = null;
?
--
Catherine Madsen
Programmer Analyst
College of Chemistry
Berkeley, CA 94720-1460
Re: [PHP] can't retrieve more than 1 record at the time
On Wed, 09 Dec 2009 11:39:55 -0800 Catherine Madsen cmad...@berkeley.edu wrote: It looks like you have to take out this line: $stmt = NULL; /* release the connection */ You are destroying the variable instead of just deleting the data, so the while statement terminates after the first record. -- Simcha Younger sim...@syounger.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] can't retrieve more than 1 record at the time
On Wed, Dec 09, 2009 at 11:39:55AM -0800, Catherine Madsen wrote:
Hi,
I'm really in need of help. I'm not a PHP programmer, but I've been
given the privilege of customizing a script written by somebody else and
can't get it to work right. I have to query 2 different tables in 2
different Oracle 10G DBs, one's mine (my_schema.my_table), the other
(otherdb.other_table) belongs to another department. In my_table, I
have the doc_id and the app_id for a record. In other_table there's the
doc_id and pdf to retrieve. The goal is to make a PDF file from each
BLOB in other_table and store them in the right directory under
hash(app_id). PDO has been installed and working, and I can connect to
both DBs without a problem. If my query limits the retrieval to one
record, the script works, but if I try to run it for all records, one
pdf file is correctly created in the right directory then I get the
following error: PHP Fatal error: Call to a member function fetch() on
a non-object in /my_location/my_script.php on line 154. It the while
($stmt-fetch(PDO::FETCH_BOUND)) line. I've pasted my script below. I
thought my problem was that maybe I was in the wrong directory after
creation of the first pdf, but several tries changing the directory
didn't make a difference. Right now, I'm running the script at the
command line. Soon I'm going to have a few hundred records to deal with
and cannot do it one by one! Any help would be very much appreciated.
Thank you!
snip
if (!(chdir($curdir)))
{
$_SESSION['msgs'][] = 'Could not change to '.$curdir;
continue;
}
$cnt = 0;
while ($stmt-fetch(PDO::FETCH_BOUND))
{
$filename = 'phs-'.$cnt.'.pdf';
if (!file_exists($filename))
{ /* if file not already there, write file with BLOB contents */
$fh = fopen($filename, 'w');
fwrite($fh, stream_get_contents($PDF));
fclose($fh);
/* add to $_SESSION['PHPulled'] for each new file saved */
$_SESSION['PHPulled'] = $_SESSION['PHPulled'] + 1;
}
Judging by your indentation you probably want a closing brace here. As
it is, your while statement won't end until the final closing brace,
which includes the $stmt = NULL; statement. Nulling this variable in
the middle of the while loop will cause it to execute once only and
cause the error message you're seeing.
/* increment stack counter */
$_SESSION['numberCand'] = $_SESSION['numberCand'] + 1;
$stmt = NULL; /* release the connection */
/*if not done with stack, redirect to self to get next*/
if (!empty($_SESSION['DOCIDs']) and
$_SESSION['numberCand'] count($_SESSION['DOCIDs']))
{
exit;
}
}
}
/* once done, go back to display search page after clearing stack
if(isset($_SESSION['DOCIDs']))
unset($_SESSION['DOCIDs'] );*/
$res = null;
$dbh1 = null;
Paul
--
Paul M. Foster
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
