PHP - Need Help Using Try/catch Exception Handeling

I have the code below working perfectly, but I was wondering if there is a more eloquent way to write this, specifically handling the exceptions...

This creates an object of a Router Class that parses my clean URLs into a Controller name, method name and the rest are arguments.

So for example: www.domain.com/users/view/profile/bobsmith would route to the Users Controller, and find the viewUsers
method and pass the arguments "profile" and "bobsmith" to it, and the method would take it from there... works great.

That explains what this code does. My only question is if there is a cleaner way to handle the exceptions, so I don't have
"throw new exception" written four times. Thoughts? Or is it good to go?



$rawURL = getPageURL();
$router = new Router($rawURL,$rootDIR);
$controller = $router->getController();
$method = $router->getMethod();
$arguments = $router->getArguments();

try {
// check controller exists and set controller path //
if ((isset($controller) && ($controller != ''))) {
$controllerPath = APPLICATION_PATH . "controllers/" . $controller . ".class.php";

// check controller path exists //
if (file_exists($controllerPath)) {
    
// set method name and check method exists //
if ((isset($method) && ($method != ''))) {
$methodName = $method . ucfirst($controller);

if (method_exists($controller, $methodName)) {
// test it out //
$test = new $controller();
$response = $test->$methodName($arguments[0]);
echo $response;
}
else {
// method_exists failed //
throw new Exception("That method does not exist foo!");
}
}
else {
// method was not found in URL //
throw new Exception("No method name was given foo!");
}
}
else {
// file_exists failed //
throw new Exception("That controller does not exist foo!");
}
}
else {
// controller was not found in URL //
throw new Exception("No controller name was given foo!");
}
}
catch (Exception $e) {
// spit it out foo //
echo $e->getMessage();
}

Hello guys.

Is it possible to catch a fatal error and then do something?

What I need to do is to catch the error and run the script a second time, before the first execution ends.

Kind regards and thanks for advance.

So I'm debating whats the best method. I'm aware that catch/blocks should be used in exceptional cases but what if it saves me from having 4 nested if/else conditions? The following is code for an xbox registration site
Code: [Select]
try {
    // check code is valid
    $c1 = $this->input->post('code1',true);
    $c2 = $this->input->post('code2',true);
    $c3 = $this->input->post('code3',true);
    $gt = $this->input->post('gamertag',true);
    $pass = $this->input->post('password',true);
    if(
    $c1 == '' || $c2 == '' || $c3 == '') {
        throw new FormError("Authorization code invalid.");
    }
    // check db for code validation
    $q = $this->db->query("select * from `codes` where `activated` = 0 and `code` = ".$c1.$c2.$c3." limit 0,1");
    if($q->num_rows() != 1) {
        throw new FormError("Authorization code invalid.");
    }
    $r = $q->row_array();
    $email = $r["recipient_email"];
    $codeGt = $r["gamertag"];
    // check valid gamertag
    $q = $this->db->query("select * from `users` where `gamertag` = '".$gt."'");
    if($q->num_rows() > 0) {
        throw new FormError("Gamertag already exists.");
    }
    // validate gamertag /w inputted gamertag
    if(strtolower($codeGt) != strtolower($gt)) {
        throw new FormError("Gamertag Invalid");
    }
    $this->_createAccount($email,$pass,$gt);
    // show register-thanks screen
    $this->load->view("register-thanks",$data);
    $success = true;
} catch (Exception $e) {
    $data['error'] = $e->getMessage();
}

How can i catch this exception and run the catch code  , and stop the error message displaying on the webpage . Thanks

<?php
  try{
   
    
    echo $_SESSION['btn'];
    
}
catch(Exception $ex)
{
    
    $_SESSION['btn'] = "Check Available";
    echo $_SESSION['btn'];
}
 ?>"/>

Please help

So basically I have a function that grabs a daily bible scripture via an rss feed. For whatever reason, it is offline today and I was greeted with a huge paragraph of errors and the bottom part of my page not rendering.

Here is the function:
Code: [Select]
<?php
function scripture(){
function fetchXML($url) 
{  
$ch = curl_init(); 
$useragent="Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1"; 
curl_setopt ($ch, CURLOPT_URL, $url); 
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt ($ch, CURLOPT_USERAGENT, $useragent); 
//get data 
$data = curl_exec($ch); 
curl_close($ch); 
return $data; 
} 
define("USE_CURL", true); 
$url = "http://www.mybiblescripture.com/rss/bible.php?fmt=daily&trans=KJV";
//get xml doc with info 
$data = fetchXML($url);  
//create a SimpleXML object to parse the xml 
$char_xml = new SimpleXmlElement($data); 
$scripture_a=$char_xml->channel->item->description;
$scripture_b=$char_xml->channel->item->title;
echo $scripture_a . '<br><b>'. $scripture_b. '</b>';
}
?>
And here is the nasty error I receive due to the url being offline:

Code: [Select]
Fatal error: Uncaught exception 'Exception' with message 'String could not be parsed as XML' in /path/lbcfunc.php:21 Stack trace: #0 /path/lbcfunc.php(21): SimpleXMLElement->__construct('') #1 /path/index.php(31): scripture() #2 {main} thrown in /path/lbcfunc.php on line 21

I have 0 experience in catching exceptions and unsure where to start. I would like to try and just echo: "No Bible Scripture Found" as a friendly message instead I guess.

thanks.

I want to use PEAR if it's installed and the regular "mail()" function if not. But to check for PEAR being installed, I can't check for the class PEAR existing because I have to include "Mail.php" first.

The problem is that even though this statement works perfectly:

Code: [Select]
     include_once "Mail.php";
This will ALWAYS be false:

Code: [Select]
    if ( file_exists( "Mail.php" ) ) ...
So how do I check for PEAR? If I just include the file, it throws a warning error that I can't seem to catch in a try..catch.

I am new to the Laravel Framework, doing an internship and at the very end.. I need some assistance please with some try catch error, Its supposed to throw an error if the site name is already in the database.. If someone could help me please and thank you ..   ```   public function create()
         {
                return View::make('edit.create');
         }
         
         public function edit( $clientsite )
        
         {
                return View::make('edit.edit', compact('clientsite'));
         }
         public function saveCreate()
         {
                $input = Input::all();
                
        try
            {
                
                $clientsite = new ClientSite;
                $clientsite->siteName = $input['siteName'];
                $clientsite->description = $input['description'];
                $clientsite->launchDate = $input['launchDate'];
                $clientsite->save();
             
                
                //ClientSite::whereSiteName($clientsite->siteName)->first();
                ClientSite::where('siteName', $clientsite->siteName)->first();
                $clientID = $clientsite['clientID'];//getting clientID for use in join query
                            //queries for retrieving features of each group for the selected client
                $clientFeatures = DB::table('features')->join('clientFeatures', function($join) use($clientID)
{
                $join->on( 'clientFeatures.featureID', '=', 'features.featureID')
                ->where('clientFeatures.clientID', '=', $clientID);
                })->get();
                $groupIDs = array();
                foreach ($clientFeatures as $c) {
                $groupIDs[] = $c->groupID;
                
}

            catch(\Illuminate\Database\QueryException $e)
{
                return View::make('profiles.clientProfiles')->with('clientsite',$clientsite)
                ->with('groupIDs',$groupIDs)
                ->with('clientFeatures',$clientFeatures)
                ->with('status','<strong>'.$siteName.' Site already exist!</strong>');

                ;  
                
         
            } ``` https://github.com/webdevdea/MyDyn ( i have not pushed these changes because I have an error )

Hey, I'm wondering what the issue is, I'm new to using PDO and objects so I'm sure this is a common error but setting me on the right track would be greatly appreciated.

Code: [Select]
Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND password = d41d8cd98f00b204e9800998ecf8427e' at line 1' in /Users/JPFoster/Sites/Jaipai.Blog/engine.php:47 Stack trace: #0 /Users/JPFoster/Sites/Jaipai.Blog/engine.php(47): PDO->query('SELECT * FROM u...') #1 /Users/JPFoster/Sites/Jaipai.Blog/index.php(7): SiteEngine->login('', '') #2 {main} thrown in /Users/JPFoster/Sites/Jaipai.Blog/engine.php on line 47 Code: [Select]
public function login($user, $pw){
$user = addslashes($this->user);
$pw = md5($pw);

$query = "SELECT * FROM users WHERE username = ".$user." AND password = ".$pw;

//set up query
$results = $this->pdo->query($query);
$num_rows = $results->num_rows;

if ($num_rows == 1){
$row = $results->fetch_assoc();
echo "Worked!";
//$this->set_session($row['id'], $row['username'], $row['email']);
} else {

echo "Your Username and Password did not match";

}

//if user + passs match { redirect (member page) and set up sessions

// Else ... Retry...
}


}
I don't see an issue with my query, and the object is instantiated by having the submit button isset() and i use login($_post[user], $_post[pw])

How to get cURL timedout Exception or cURL timedout Message ?

at this point, I've authenticated with the login service, and I believe I'm now passing the cookie correctly to the ADBAccess service, but when I do a soapcall to getCMSData, I'm getting an exception.

Here's the relevant code:

                $agDataService->__setCookie('cookie', $s_Cookie);
               
                $a_includeList[0]="*";

                $a_getCMSTables_args['opName']='accounts';
                $a_getCMSTables_args['startDate']='01/07/2011';
                $a_getCMSTables_args['endDate']='01/08/2011';
                $a_getCMSTables_args['lastID']='';
                $a_getCMSTables_args['includeList']= a_includeList;

                $agTables = $agDataService->__soapCall('getCMSData', $a_getCMSTables_args, null, new SoapHeader('http://webservice.agemni.com', 'cookie', $s_Cookie));

and here's the exception:
System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.NullReferenceException: Object reference not set to an instance of an object. at ADBAccess.setErrorXML(XmlDocument& responseDoc, XmlElement& DocRoot, String ErrorMessage, Int32 ErrorNum, Int32 numRecords) at ADBAccess.getCMSData(String opName, String startDate, String endDate, String lastID, String[] includeList) --- End of inner exception stack trace ---

any ideas?

Hi ! I was seeing the Exception class defined in basic.php and I found that all the methods are final and without body:
Code: [Select]
final public function getMessage () {}But if I call MyCustomException->getMessage() I get the message.
How does it works??

hello to all, My issue is that i have a script encoded with zend and the script some pages work some are just BLANK  Zend it is installed :     This program makes use of the Zend Scripting Language Engine:
Zend Engine v2.4.0, Copyright © 1998-2014 Zend Technologies
    with the ionCube PHP Loader v4.7.1, Copyright © 2002-2014, by ionCube Ltd., and
    with Zend Guard Loader v3.3, Copyright © 1998-2013, by Zend Technologies
Configuration File (php.ini) Path /usr/local/lib Loaded Configuration File /usr/local/lib/php.ini     and Its throwing exception he     Can someone please help cuz i am tryin like a week to fix it but no results
Edited by SSopranos, 07 January 2015 - 02:21 PM.

Hi guys, I'm reviewing a piece of small web application and the current application does not have any error / exception handling capability. If there is any error, it would simply show an error message followed by die;.

I'm planning to implement a simple exception handling class to handle the errors. What I'm thinking is a simple redirect when an error is being caught together with an error code that correspond to an error message in a simple flat text file. The error page will then show an error message that corresponds to the code.

Here's what I have so far. Would appreciate if the PHP experts here would give simple pointers to enhance it.

<?php
class MyException extends Exception {}

try {
throw new MyException("error.php");
}

catch (MyException $e) {
$file = $e->getMessage();
header("Location: $file?e=1");
}

?>

This is what I have on my error.php page

<?php
$errorcode = $_GET['e'];

function getErrorMessage($errorcode) {
$errors = file("english.txt");
foreach ($errors as $error) {
list ($key,$value) = explode(",",$error,2);
$errorArray[$key] = $value;
}
return $errorArray[$errorcode];
}
echo "Test <br />";
echo getMessageMap($errorcode);
?>

As you can see here, exception class would redirect user to error.php if an error is caught together with a GET variable on the URL. On error.php page, it would GET the error code and then run it through a function to get the error message of the corresponding error code and then echos it out.

Was wondering if this is a good practice? My ultimate goal here is to avoid displaying the error message itself on private includes file.

Thank you in advance for your suggestions.

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