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# sesam_diagnostic

(PHP 3 CVS only)

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:

表格 1. Status information returned by sesam_diagnostic()

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:

範例 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=\"1\">\n";
echo "<tr><th colspan=\"" . $colspan . "\"><span class=\"spanred\">ERROR:</span> ".
htmlspecialchars($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 ($line != "\n")
echo htmlspecialchars($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, $col, 1) == "\t") ? "\t" : ".";
}
echo "<span class=\"spanred\">\\</span>\n";
echo "<span class=\"normal\">" . htmlspecialchars($line) . "</span>";
for ($col=0; $col < $err["errcol"]; ++$col) {
echo (substr ($line, $col, 1) == "\t") ? "\t" : ".";
}
echo "<span class=\"spanred\">/</span>\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

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