Showing all errors and warnings [duplicate]

UPDATE 2:

I have now removed the following from the .php file:

<?php error_reporting( E_ALL ); ?>

I have set display_erros in php.ini as follows:

display_errors = On

Error reporting is set to the following in php.ini:

error_reporting = E_ALL | E_STRICT

After restarting Apache, I still get no errors/warnings.

UPDATE 1:

I have changed error_reporting in php.ini from:

error_reporting = E_ALL & ~E_DEPRECATED

error_reporting = E_ALL | E_STRICT

After which I restarted Apache, e.g.

/etc/init.d/apache2 restart

But the page will still not display errors/warnings of any kind.

ORIGINAL QUESTION:

The following script is generating a warning because the $err being inside the if statement. Why is this warning not being displayed on the PHP page in a web browser?

I have to look at the Apache logs to see the warning. Also, if I deliberately change the "insert into" to "delete into", it does not display an error on the PHP page. Why are the errors not displaying on the actual PHP page?

<?php error_reporting(E_ALL);
?>
<html> <head> <title></title> <link rel="icon" type="image/png" href="favicon.ico"> <?php if ($_SERVER['REQUEST_METHOD'] == 'POST') { $err = array(); if (empty( $_POST['display_name'])) $err[] = "display name field is required"; if (empty( $_POST['email'])) $err[] = "email field is required"; if (empty( $_POST['password'])) $err[] = "password field is required"; if (!$err) { try { $DBH = new PDO("mysql:host=localhost;dbname=database1", "user", "pass"); $DBH->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $STH = $DBH->prepare("delete into table1 (display_name, email, password) values ( :display_name, :email, :password )"); $STH->bindParam(':display_name', $_POST['display_name'], PDO::PARAM_STR, 100); $STH->bindParam(':email', $_POST['email'], PDO::PARAM_STR, 100); $STH->bindParam(':password', $_POST['password'], PDO::PARAM_STR, 100); $STH->execute(); $STH = $DBH->prepare("delete into table2 ( username, status, users_id ) values ( :username, :status, :users_id )"); $strStatus = 1; $STH->bindParam(':username', $_POST['display_name'], PDO::PARAM_STR, 100); $STH->bindParam(':status', $strStatus, PDO::PARAM_INT, 1); $STH->bindParam(':users_id', $_POST['referer'], PDO::PARAM_INT, 1); $STH->execute(); $DBH = null; } catch (PDOException $e) { echo $e->getMessage(); } header("Location: " . $_SERVER['PHP_SELF']); exit; } else { foreach ($_POST as $key => $val) { $form[$key] = htmlspecialchars($val); } } } else { $form['display_name'] = $form['email'] = $form['password'] = ''; } ?> </head> <body> <?php foreach($err as $line) { ?> <div><?php echo $line; ?></div> <?php } ?> <h1>Register</h1> <form method="post"> Referers id:<br/> <input type="text" name="referer" /><br/><br/> Name:<br/> <input type="text" name="display_name" value="<?php echo $form['display_name']; ?>" /><br/><br/> Email:<br/> <input type="text" name="email" value="<?php echo $form['email']; ?>" /><br/><br/> Password:<br/> <input type="text" name="password" value="<?php echo $form['password']; ?>" /><br/><br/> <input type="submit" value="register" /> </form> </body>
</html>

6 Answers

Display errors could be turned off in the php.ini or your Apache configuration file.

You can turn it on in the script:

error_reporting(E_ALL);
ini_set('display_errors', '1');

You should see the same messages in the PHP error log.

I was able to get all errors via the below code:

ini_set('display_startup_errors', 1);
ini_set('display_errors', 1);
error_reporting(-1);

Straight from the php.ini file:

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Error handling and logging ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; This directive informs PHP of which errors, warnings and notices you would like
; it to take action for. The recommended way of setting values for this
; directive is through the use of the error level constants and bitwise
; operators. The error level constants are below here for convenience as well as
; some common settings and their meanings.
; By default, PHP is set to take action on all errors, notices and warnings EXCEPT
; those related to E_NOTICE and E_STRICT, which together cover best practices and
; recommended coding standards in PHP. For performance reasons, this is the
; recommend error reporting setting. Your production server shouldn't be wasting
; resources complaining about best practices and coding standards. That's what
; development servers and development settings are for.
; Note: The php.ini-development file has this setting as E_ALL. This
; means it pretty much reports everything which is exactly what you want during
; development and early testing.
;
; Error Level Constants:
; E_ALL - All errors and warnings (includes E_STRICT as of PHP 5.4.0)
; E_ERROR - fatal run-time errors
; E_RECOVERABLE_ERROR - almost fatal run-time errors
; E_WARNING - run-time warnings (non-fatal errors)
; E_PARSE - compile-time parse errors
; E_NOTICE - run-time notices (these are warnings which often result
; from a bug in your code, but it's possible that it was
; intentional (e.g., using an uninitialized variable and
; relying on the fact it is automatically initialized to an
; empty string)
; E_STRICT - run-time notices, enable to have PHP suggest changes
; to your code which will ensure the best interoperability
; and forward compatibility of your code
; E_CORE_ERROR - fatal errors that occur during PHP's initial startup
; E_CORE_WARNING - warnings (non-fatal errors) that occur during PHP's
; initial startup
; E_COMPILE_ERROR - fatal compile-time errors
; E_COMPILE_WARNING - compile-time warnings (non-fatal errors)
; E_USER_ERROR - user-generated error message
; E_USER_WARNING - user-generated warning message
; E_USER_NOTICE - user-generated notice message
; E_DEPRECATED - warn about code that will not work in future versions
; of PHP
; E_USER_DEPRECATED - user-generated deprecation warnings
;
; Common Values:
; E_ALL (Show all errors, warnings and notices including coding standards.)
; E_ALL & ~E_NOTICE (Show all errors, except for notices)
; E_ALL & ~E_NOTICE & ~E_STRICT (Show all errors, except for notices and coding standards warnings.)
; E_COMPILE_ERROR|E_RECOVERABLE_ERROR|E_ERROR|E_CORE_ERROR (Show only errors)
; Default Value: E_ALL & ~E_NOTICE & ~E_STRICT & ~E_DEPRECATED
; Development Value: E_ALL
; Production Value: E_ALL & ~E_DEPRECATED & ~E_STRICT
;
error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
lang-none
For pure development I go for:
lang-none error_reporting = E_ALL ^ E_NOTICE ^ E_WARNING

Also don't forget to put display_errors to on

display_errors = On

After that, restart your server for Apache on Ubuntu:

sudo /etc/init.d/apache2 restart

PHP errors can be displayed by any of below methods:

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

For more details:

Displaying PHP errors

Set these on php.ini:

;display_startup_errors = On
display_startup_errors=off
display_errors =on
html_errors= on

From your PHP page, use a suitable filter for error reporting.

error_reporting(E_ALL);

Filers can be made according to requirements.

E_ALL
E_ALL | E_STRICT

You can see a detailed description here.

ini_set('display_errors', 1);
// Report simple running errors
error_reporting(E_ERROR | E_WARNING | E_PARSE);
// Reporting E_NOTICE can be good too (to report uninitialized
// variables or catch variable name misspellings ...)
error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);
// Report all errors except E_NOTICE
error_reporting(E_ALL & ~E_NOTICE);
// Report all PHP errors (see changelog)
error_reporting(E_ALL);
// Report all PHP errors
error_reporting(-1);
// Same as error_reporting(E_ALL);
ini_set('error_reporting', E_ALL);