Codeigniter Error Handling Class
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Codeigniter Error Handler
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Database Error Handling In Codeigniter
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Codeigniter Try Catch
a minute: Sign up Error handling in PHP and Codeigniter. How to do it? Avoiding recursive code up vote 0 down vote favorite 1 I am utilizing Codeigniter. I have developed a variety of features, and they work perfectly if used as intended. One such script, a whois script checks the owner of a domain name. If however the user types error handling in codeigniter tutorial in an invalid domain name, all sorts of errors are being thrown up here there and everywhere. For example, if a user types in stack.-com, this is of course not a valid domain. Thus when i call my helper which does the query, no result is return and a variety of errors are returned. There are also errors when i try to display an empty array to the user. My question relates to errors. I could use preg_match and check if the domain is valid. If not i set an error variable which i intend to output to the user. However before my controller gets to the if else statement which decides whether to show the error page or the results page, the program is running queries, and accessing methods to get the data which were there no errors would get the data to pass to the result view. I.E I know there is an error, but still lots of other errors are being shown because an invalid item is being passed to my other scripts. With Codeigniter, and the MVC se
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this codeigniter log_message site About Us Learn more about Stack Overflow the company Business Learn more codeigniter query error handling about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x display error in codeigniter Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up error handling http://stackoverflow.com/questions/8751632/error-handling-in-php-and-codeigniter-how-to-do-it-avoiding-recursive-code in codeigniter up vote 8 down vote favorite 4 In my project to catch all the PHP errors I have set up my error handling mechanism as follows: I have set error_reporting() in index.php file which overrides anything in the php.ini file An error handler is set in system/codeigniter/CodeIgniter.php using set_error_handler - this error handler, _exception_handler, is found in system/codeigniter/Common.php The _exception_handler function ignores http://stackoverflow.com/questions/14778377/error-handling-in-codeigniter E_STRICT errors, calls the show_php_error function From the Exceptions system library if the severity is that specified by your error_reporting() function in index.php and logs the error according to whatever you have set up in your config.php file The handler returns FALSE so after this PHP goes on to handle the error however it normally would according your error_reporting level and display_errors setting. The thing that is puzzling me is that E_ERROR errors i.e. fatal errors don’t seem to be being caught by _exception_handler at all. It’s not just that show_php_error isn’t being called, it looks like the function just isn’t being called for them. This is obviously a problem as it means that they aren’t get handled by show_php_error or logged. For example if I deliberately mistype $this->load->views('foo'); in a controller, the handler doesn’t get called. Any suggestion about error handling would be much appreciated, thanks! php codeigniter share|improve this question edited Feb 8 '13 at 18:25 Tom Walters 9,25343057 asked Feb 8 '13 at 17:47 troy 507924 I think it may be an issue with PHP itself without being able to test it. If you see php.net/manual/en/function.error-repo
Software Development Shell Scripting System Programming Web Programming Tutorials Windows Phone Tutorials Video Tutorials Web Development Tutorials Write For https://www.eduonix.com/blog/web-programming-tutorials/error-handling-codeigniter/ Us Contact Us Web Programming Tutorials Error Handling in CodeIgniter http://trzebinski.info/exception-handler-for-code-igniter/ SonalFebruary 9, 2015, 2 years ago008.5K Today we are going to understand the error handling especially in CI in this Error Handling in CodeIgniter tutorial. PHP has various levels of error reporting for different errors. What level of error we get error handling when we run our script depends on our server configuration. The decision to show the error on screen or not, is controlled by the server setting called display_errors. The developer may or may not have access to the underlying server setting such as display_errors. So the underlying settings are unknown to error handling in us. These settings are made known to us by codeigniter by the use of error_reporting() function on every page call, which overrides the settings of display_errors. This error_reporting() is found in the main index.php file. Error functions in codeigniter are simple procedural interfaces that are available globally throughout the application, hence the error messages are triggered without caring about the class/function scope. CodeIgniter helps us to report errors into our applications by using the following functions: show_error(): This function displays the error message using the template in application/errors/error_general.php. Syntax of show_error() function is: PHP show_error(‘message’,status_code); 1 show_error(‘message’,status_code);
Here, the parameter message is mandatory and is the string error message to be shown. The parameter status_code is optional which is an integer value representing the HTTP status code to be sent with the error. Example: PHP show_error(‘File not found!’); 1 show_error(‘File not found!’); show_404(): This function displays the 404 error message suppliejava and other objective languages. When an error occurs you can throw an exception, then an Exception object is created. Exception can then be caught somewhere else in the code, where you can decide what to do in case of a particular error, here an exception object can be used to read details about the error. You can also create your own Exception class, or use one of the existing e.g. in SPL (see http://www.php.net/manual/en/spl.exceptions.php). This helps you recognize which kind of error occured, not just if (you can throw many exceptions in one function), and write many variants of application behaviour for different kinds of errors (exceptions thrown). Everything is explained in php manual (http://php.net/exceptions), read for details. My problem was that very often my exception was caught just to be passed to the error class (then write to log file, print on screen etc.). I didn't like repeating try/catch section of the code looking like this: try { // code throwing exception(s) } catch (Exception $exc) { new Error($exc); } In the above example Error class construct should be considered as an exception handler. Built-in php (obviously 5, I believe nobody uses php 4 nowadays) set_exception_handler function comes of help. It lets you define a handler function used if an exception is not caught within a try/catch block. Presented ExceptionHandler class is a Codeigniter library, it should be auto loaded so handle function is always set as default handler (in constructor). Handle must be public, otherwise set_exception_handler won't work. Class also contains functions for printing and logging exceptions details (you can add whatever you want to happen when your system is in trouble). You can obviously use it for handling exceptions in try/catch blocks, but it's not necessary. Once library's loaded, it's object is already created under $this->librarynamenocapitals, so ‘manual' run looks like this: try { // code throwing exception(s) } catch (Exception $exc) { $this->exceptionhandler->handle($exc);