error class not catching thrown errors - php

Question

I have an exception class that looks like this
<?php
class Errors{
public function displayError(Exception $e){
$trace = $e->getTrace();
if($trace[0]['class'] != ""){
$class = $trace[0]['class'];
$method = $trace[0]['function'];
$file = $trace[0]['file'];
$line = $trace[0]['line'];
$error_message = $e->getMessage().
"<br /> Class/Method : ".$class." <==> ".$method.
"<br /> File : ".$file.
"<br /> Line : ".$line;
}
return $error_message;
}
}
?>
This works fine for many errors that are thrown due do typos/column count not matching value count, but when I throw an exception from the code myself, I get an error. For example
try{
$stmt = $db->dbh->prepare("SELECT user FROM reset ");
$stmt->execute();
if ($stmt->rowCount() < 1){
throw new Exception('The Link expired, request a new one');
} else {
throw new Exception('The Link is invalid, please request a new one');
}
}
catch (PDOException $e) {
$error = new Errors();
echo "<b>".$error->displayError($e)."</b>";
}
I get Uncaught exception 'Exception' with message 'The Link is invalid, please request a new one' error when I run the code. If I remove that line, and induce an error by spelling SELECT as SLECT, the error class works fine.
How can I make in such a way that the error class will catch all types of errors ?

Answer 1

The problem is NOT all exceptions are PDOExceptions.You code cacthes only PDOException which means new Exception won't be catched. Try :
try
{
$stmt = $db->dbh->prepare("SELECT user FROM reset ");
...
}
catch (PDOException $e)
{
$error = new Errors();
echo "<b>".$error->displayError($e)."</b>";
}
catch (Exception $e)
{
$error = new Errors();
echo "<b>".$error->displayError($e)."</b>";
}
The reason why your code works when you spell SELECT as SLECT is because you triggered a PDOException instead of a new Exception.