(PHP 5 >= 5.2.0)
error_get_last — Get the last occurred error
Gets information about the last error that occurred.
Returns an associative array describing the last error with keys "type",
"message", "file" and "line". If the error has been caused by a PHP
internal function then the "message" begins with its name.
Returns NULL if there hasn't been an error yet.
Example #1 An error_get_last() example
<?php
echo $a;
print_r(error_get_last());
?>
以上例程的输出类似于：
Array
(
[type] => 8
[message] => Undefined variable: a
[file] => C:\WWW\index.php
[line] => 2
)