 PHP : Function Reference : Oracle Functions : ociexecute
egypt
Whereas MySQL doesn't care what kind of quotes are around a LIKE clause, ociexecute gives the error:
ociexecute(): OCIStmtExecute: ORA-00904: "NM": invalid identifier
for the following.
<?php
$sql = "SELECT * FROM addresses "
. "WHERE state LIKE \"NM\""; // error!
$stmt = ociparse($conn, $sql);
ociexecute($stmt);
?>
it's fine if you just use single quotes:
. "WHERE state LIKE 'NM'";
but i think it's interesting that ociparse doesn't say anything
robra
To catch what an error was about, I use a piece of PL/SQl instead of just a SELECT. For instance:
$query="BEGIN
SELECT user_id INTO :v_user_id FROM rw_users
WHERE gebruikersnaam = LOWER(:p_alias);
:ERROR := 0;
EXCEPTION
when others then
:ERROR := 1;
:SQLCODE := SQLCODE;
:SQLERRM := SUBSTR(SQLERRM,0,300);
END; ";
$stmt = OCIParse($conn, $query);
/* Output parameters */
OCIBindByName($stmt,":ERROR",&$insert_error,32);
OCIBindByName($stmt,":SQLCODE",&$SQLCODE,32);
OCIBindByName($stmt,":SQLERRM",&$SQLERRM,300);
OCIBindByName($stmt,":v_user_id",&$v_user_id,32);
/* Input parameters */
OCIBindByName($stmt,":p_alias", &$p_alias, strlen($p_alias)+2);
$exec_result = OCIExecute($stmt,OCI_DEFAULT);
Now if the select causes an exception, it is caught and the error message is stored.
flo
Termin.php
<?php
session_start();
if(!session_is_registered("db"))
{
$_SESSION["user"] = $_POST["user"];
$_SESSION["pass"] = $_POST["pass"];
$_SESSION["db"] = $_POST["db"];
}
$logdata[0] = $_SESSION["user"];
$logdata[1] = $_SESSION["pass"];
$logdata[2] = $_SESSION["db"];
$conn = OCILogon($logdata[0],$logdata[1],$logdata[2]);
$sql = "Select T.TEID, TEDATUM, TEUhrzeit, TEORT, TEBeschreibung, KLID as GRID, KLBezeichnung as Bezeichnung From TTermine T, TGruppetermin G, TKLASSE K Where T.TEID=G.TEID AND GRID=K.KLID";
$stmt = OCIParse($conn, $sql);
OCIExecute($stmt);
$rows = OCIFetchstatement($stmt,$results);
$keys = array_keys($results);
$table = "<table>\n <TR>\n";
foreach($keys as $key)
{
$table .= " <TH>$key</TH>\n";
}
$table .= " </TR>\n";
for($i=0;$i<$rows;$i++)
{
$table .= " <TR>";
foreach($results as $spalte)
{
$data = $spalte[$i];
$table .= " <TD>$data</TD>";
}
$table .=" </TR>";
}
$sql = "Select T.TEID, TEDATUM, TEUhrzeit, TEORT, TEBeschreibung, BIID as GRID, BIBezeichnung as Bezeichnung From TTermine T, TGruppetermin G, TBILDUNGSGANG B Where T.TEID=G.TEID AND GRID=B.BIID";
$stmt = OCIParse($conn, $sql);
OCIExecute($stmt);
$rows = OCIFetchstatement($stmt,$results);
for($i=0;$i<$rows;$i++)
{
$table .= " <TR>";
foreach($results as $spalte)
{
$data = $spalte[$i];
$table .= " <TD>$data</TD>";
}
$table .=" </TR>";
}
$sql = "Select T.TEID, TEDATUM, TEUhrzeit, TEORT, TEBeschreibung, BEID as GRID, BEBezeichnung as Bezeichnung From TTermine T, TGruppetermin G, TBERUFSFELD B Where T.TEID=G.TEID AND GRID=B.BEID";
$stmt = OCIParse($conn, $sql);
OCIExecute($stmt);
$rows = OCIFetchstatement($stmt,$results);
for($i=0;$i<$rows;$i++)
{
$table .= " <TR>";
foreach($results as $spalte)
{
$data = $spalte[$i];
$table .= " <TD>$data</TD>";
}
$table .=" </TR>";
}
$table .="</TABLE>";
/***************************/
//echo "$table";
/***************************/
$sql = "Select BIID From TBILDUNGSGANG";
$stmt = OCIParse($conn, $sql);
OCIExecute($stmt);
$rows = OCIFetchstatement($stmt,$results);
$biid = $results[BIID];
$select = "<SELECT NAME=\"biid\">\n";
foreach($biid as $data)
{
$select .= " <OPTION VALUE=\"$data\">$data</OPTION>\n";
}
$select .= "</select>";
//echo $select;
echo <<< HTML
<HTML>
<HEAD>
<TITLE>TERMIN.PHP</TITLE>
</HEAD>
<BODY>
<H1>Willkommen bei Termin.PHP</H1>
Hier sind alle termine
$table
Sie können sich Termine von Klassen bestimmter Bildungsgaänge ansehen. Einfach auswählen.
<form action="$PHP_SELF" method="post">
$select
<input type="submit">
</form>
HTML;
$biid = $_POST["biid"];
if(isset($biid))
{
$sql = "Select klid, KlBezeichnung, T.TEID, TEDATUM, TEUHRZEIT, TEORT, TEBeschreibung from Tklasse K, TGruppetermin G, TTermine T where Grid=BIID AND T.TEID=G.TEID AND BIID='$biid'";
$stmt = OCIParse($conn, $sql);
OCIExecute($stmt);
$rows = OCIFetchstatement($stmt,$results);
$keys = array_keys($results);
$table = "<table>\n <TR>\n";
foreach($keys as $key)
{
$table .= " <TH>$key</TH>\n";
}
$table .= " </TR>\n";
for($i=0;$i<$rows;$i++)
{
$table .= " <TR>";
foreach($results as $spalte)
{
$data = $spalte[$i];
$table .= " <TD>$data</TD>";
}
$table .=" </TR>";
}
if($rows>0)
{
echo $table;
}
}
echo "</BODY>\n</HTML>";
?>
jicurito
regarding egypt note on double quotes, the reason for that behaviour is that Oracle treats things with double quotes as identifiers on a given statement... using single quotes won't provoque mistakes...
kobbe
If you use OCI_DEFAULT and OCIRollback, don't forget that a simple SELECT-statement works with an commit that has also an effect on all previously statements.
los olvidados
Every time you call ociexecute(), the setting for autocommit may change. If you don't want autocommit on, be sure to use OCI_DEFAULT for every call to ociexecute.
alexander dot zimmer
Addition to the posting of cthrall@rocketmail.com (from 06-Sep-2000):
It's true, you can't call OCIBindByName in a loop and bind to an associative array like this:
foreach ($array as $key => $val)
{
OCIBindByName($state, $key, $val, -1);
}
BUT: You can do it this way:
foreach ($array as $key => $val)
{
OCIBindByName($state, $key, $array[$key], -1);
}
Background: the command OCIBindByName BINDS a PHP variable to a parameter, not just its current value. Thus, it is up to you to make sure that the variable has the correct value at the very time when OCIExecute is called, not just when OCIBindByName was called! The PHP variable gets evaluated at the point of OCIExecute and not earlier.
This is somewhat more legible than cthrall's solution (but it surely works, too).
jgrosland
There seems to be some interesting behavior when using OCI_DEFAULT as the second parameter to ociexecute... once the autocommit behavior is turned off for a connection, it remains off for the life of that connection.
This tends to be a problem when using OCIPLogon, as a SQL statement may remain outstanding over the life of many webpages.
This is most problematic when you're doing an update or insert, and a table remains locked while that connection is waiting for a commit/rollback. Be sure to explicitly commit or rollback if you use OCI_DEFAULT at any point.
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