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)
--$colspan;
echo " TABLE BORDER \n";
echo " TR TH COLSPAN=".$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);
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