sesam_diagnostic
(No version information available, might be only in CVS)
sesam_diagnostic — Return status information for last SESAM call
Description
array sesam_diagnostic
( void
)
Returns an associative array of status and return codes for the last SQL query/statement/command. Elements of the array are:
| Element | Contents |
|---|---|
| $array["sqlstate"] | 5 digit SQL return code (see the SESAM manual for the description of the possible values of SQLSTATE) |
| $array["rowcount"] | number of affected rows in last update/insert/delete (set after "immediate" statements only) |
| $array["errmsg"] | "human readable" error message string (set after errors only) |
| $array["errcol"] | error column number of previous error (0-based; or -1 if undefined. Set after errors only) |
| $array["errlin"] | error line number of previous error (0-based; or -1 if undefined. Set after errors only) |
In the following example, a syntax error (E SEW42AE ILLEGAL CHARACTER) is displayed by including the offending SQL statement and pointing to the error location:
Example#1 Displaying SESAM error messages with error position
<?php
// Function which prints a formatted error message,
// displaying a pointer to the syntax error in the
// SQL statement
function PrintReturncode ($exec_str) {
$err = Sesam_Diagnostic();
$colspan=4; // 4 cols for: sqlstate, errlin, errcol, rowcount
if ($err["errlin"] == -1)
--$colspan;
if ($err["errcol"] == -1)
--$colspan;
if ($err["rowcount"] == 0)
--$colspan;
echo "<TABLE BORDER>\n";
echo "<TR><TH COLSPAN=".$colspan."><FONT COLOR=red>ERROR:</FONT> ".
htmlspecialchars($err["errmsg"])."</TH></TR>\n";
if ($err["errcol"] >= 0) {
echo "<TR><TD COLSPAN=".$colspan."><PRE>\n";
$errstmt = $exec_str."\n";
for ($lin=0; $errstmt != ""; ++$lin) {
if ($lin != $err["errlin"]) { // $lin is less or greater than errlin
if (!($i = strchr ($errstmt, "\n")))
$i = "";
$line = substr ($errstmt, 0, strlen($errstmt)-strlen($i)+1);
$errstmt = substr($i, 1);
if ($line != "\n")
print htmlspecialchars ($line);
} else {
if (! ($i = strchr ($errstmt, "\n")))
$i = "";
$line = substr ($errstmt, 0, strlen ($errstmt)-strlen($i)+1);
$errstmt = substr($i, 1);
for ($col=0; $col < $err["errcol"]; ++$col)
echo (substr($line, $col, 1) == "\t") ? "\t" : ".";
echo "<FONT COLOR=RED><BLINK>\\</BLINK></FONT>\n";
print "<FONT COLOR=\"#880000\">".htmlspecialchars($line)."</FONT>";
for ($col=0; $col < $err["errcol"]; ++$col)
echo (substr ($line, $col, 1) == "\t") ? "\t" : ".";
echo "<FONT COLOR=RED><BLINK>/</BLINK></FONT>\n";
}
}
echo "</PRE></TD></TR>\n";
}
echo "<TR>\n";
echo " <TD>sqlstate=" . $err["sqlstate"] . "</TD>\n";
if ($err["errlin"] != -1)
echo " <TD>errlin=" . $err["errlin"] . "</TD>\n";
if ($err["errcol"] != -1)
echo " <TD>errcol=" . $err["errcol"] . "</TD>\n";
if ($err["rowcount"] != 0)
echo " <TD>rowcount=" . $err["rowcount"] . "</TD>\n";
echo "</TR>\n";
echo "</TABLE>\n";
}
if (!sesam_connect ("mycatalog", "phoneno", "otto"))
die ("cannot connect");
$stmt = "SELECT * FROM phone\n".
" WHERE@ LASTNAME='KRAEMER'\n".
" ORDER BY FIRSTNAME";
if (!($result = sesam_query ($stmt)))
PrintReturncode ($stmt);
?>
See also: sesam_errormsg() for simple access to the error string only