I have narrowed down my problem to the mysql_connect call I am doing in PHP.
It produces an error message. What would you suggest I should do to fix the problem with this error:
Error Summary
HTTP Error 500.0 — Internal Server Error
The page cannot be displayed because an internal server error has occurred.Detailed Error Information
Module IsapiModule
Notification ExecuteRequestHandler
Handler PHP
Error Code 0x00000000
Requested URL http://localhost:80/getuser.php?q=3&sid=0.2953613724031635
Physical Path C:\inetpub\wwwroot\getuser.php
Logon Method Anonymous
Logon User AnonymousMost likely causes:
- IIS received the request; however, an internal error occurred during the processing of the request. The root cause of this error depends on which module handles the request and what was happening in the worker process when this error occurred.
- IIS was not able to access the web.config file for the Web site or application. This can occur if the NTFS permissions are set incorrectly.
- IIS was not able to process configuration for the Web site or application.
- The authenticated user does not have permission to use this DLL.
- The request is mapped to a managed handler but the .NET Extensibility Feature is not installed.
Things you can try:
- Ensure that the NTFS permissions for the web.config file are correct and allow access to the Web server’s machine account.
- Check the event logs to see if any additional information was logged.
- Verify the permissions for the DLL.
- Install the .NET Extensibility feature if the request is mapped to a managed handler.
- Create a tracing rule to track failed requests for this HTTP status code. For more information about creating a tracing rule for failed requests, click here.
Links and More InformationThis error means that there was a problem while processing the request. The request was received by the Web server, but during processing a fatal error occurred, causing the 500 error.
Microsoft Knowledge Base Articles:
- 294807
demongolem
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asked Jul 14, 2009 at 9:01
Check phpinfo() for presence of MySQL functions. If those exist, try connecting to other MySQL servers. Try to narrow down if the problem is with your code, your PHP library, your SQL server or your web server by changing variables. CHeck for logs, I know Apache has an error log where detailed PHP error information goes — IIS probably has something similar. Consider recompiling and reinstalling PHP.
answered Jul 14, 2009 at 11:56
JoshJosh
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2
Though Avinash mentioned apache, he may be on the right track in the sense that you could be missing the actual library for mysql to interact with IIS. I didn’t read through the whole thing, but this may help you out: http://www.atksolutions.com/articles/install_php_mysql_iis.html
Also, I saw your response to Josh… You should have a table in your phpinfo for mysql.
answered Jul 16, 2009 at 0:58
brackbrack
6597 silver badges14 bronze badges
Just a reminder to new version PHP users:
mysql_connect was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used.
Example (MySQLi Object-Oriented) of you should use instead of myslq_connect:
<?php
$servername = "localhost";
$username = "username";
$password = "password";
// Create connection
$conn = new mysqli($servername, $username, $password);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>
answered Nov 15, 2021 at 8:11
check you apache conf file
and remove comment from the line below
(simply remove # from begining of the line)
LoadModule isapi_module modules/mod_isapi.so
answered Jul 14, 2009 at 9:16
AvinashAvinash
5853 gold badges9 silver badges17 bronze badges
1
I have narrowed down my problem to the mysql_connect call I am doing in PHP.
It produces an error message. What would you suggest I should do to fix the problem with this error:
Error Summary
HTTP Error 500.0 — Internal Server Error
The page cannot be displayed because an internal server error has occurred.Detailed Error Information
Module IsapiModule
Notification ExecuteRequestHandler
Handler PHP
Error Code 0x00000000
Requested URL http://localhost:80/getuser.php?q=3&sid=0.2953613724031635
Physical Path C:\inetpub\wwwroot\getuser.php
Logon Method Anonymous
Logon User AnonymousMost likely causes:
- IIS received the request; however, an internal error occurred during the processing of the request. The root cause of this error depends on which module handles the request and what was happening in the worker process when this error occurred.
- IIS was not able to access the web.config file for the Web site or application. This can occur if the NTFS permissions are set incorrectly.
- IIS was not able to process configuration for the Web site or application.
- The authenticated user does not have permission to use this DLL.
- The request is mapped to a managed handler but the .NET Extensibility Feature is not installed.
Things you can try:
- Ensure that the NTFS permissions for the web.config file are correct and allow access to the Web server’s machine account.
- Check the event logs to see if any additional information was logged.
- Verify the permissions for the DLL.
- Install the .NET Extensibility feature if the request is mapped to a managed handler.
- Create a tracing rule to track failed requests for this HTTP status code. For more information about creating a tracing rule for failed requests, click here.
Links and More InformationThis error means that there was a problem while processing the request. The request was received by the Web server, but during processing a fatal error occurred, causing the 500 error.
Microsoft Knowledge Base Articles:
- 294807
demongolem
9,47436 gold badges90 silver badges105 bronze badges
asked Jul 14, 2009 at 9:01
Check phpinfo() for presence of MySQL functions. If those exist, try connecting to other MySQL servers. Try to narrow down if the problem is with your code, your PHP library, your SQL server or your web server by changing variables. CHeck for logs, I know Apache has an error log where detailed PHP error information goes — IIS probably has something similar. Consider recompiling and reinstalling PHP.
answered Jul 14, 2009 at 11:56
JoshJosh
11k11 gold badges65 silver badges109 bronze badges
2
Though Avinash mentioned apache, he may be on the right track in the sense that you could be missing the actual library for mysql to interact with IIS. I didn’t read through the whole thing, but this may help you out: http://www.atksolutions.com/articles/install_php_mysql_iis.html
Also, I saw your response to Josh… You should have a table in your phpinfo for mysql.
answered Jul 16, 2009 at 0:58
brackbrack
6597 silver badges14 bronze badges
Just a reminder to new version PHP users:
mysql_connect was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used.
Example (MySQLi Object-Oriented) of you should use instead of myslq_connect:
<?php
$servername = "localhost";
$username = "username";
$password = "password";
// Create connection
$conn = new mysqli($servername, $username, $password);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>
answered Nov 15, 2021 at 8:11
check you apache conf file
and remove comment from the line below
(simply remove # from begining of the line)
LoadModule isapi_module modules/mod_isapi.so
answered Jul 14, 2009 at 9:16
AvinashAvinash
5853 gold badges9 silver badges17 bronze badges
1
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ve1ikiy
- Posts: 4
- Joined: Wed Jun 04, 2014 1:59 pm
При импорте бд MySQL выдает ошибку 500
При импорте бд MySQL выдает ошибку 500 — Internal Server Error
Чистый сервер от Технодома 8ГБ озу, процессор i5 диск — Raid1 2TB
Ставлю по инструкции панель VestaCP, ничего в настройках не меняю, кроме max_upload_files с 2МБ на 5МБ (потому что размер импортируемого файла 4,2 МБ).
При попытке импорта БД phpmyadmin выдает ошибку 500.
Также есть VDS, на которой сейчас и крутится сайт. Там 1ГБ оперативки, и вроде SSD винт.
Установлена VestaCP в мае, мною не обновлялась. Настройки не менялись. Импорт файла в БД идет нормально, никаких ошибок нет.
Единственная разница в настройках, это на VDS стоит vesta-core-packedge версии 8, а на новом выделенном vesta-core-packedge 9.
Вопрос: как решить эту проблему?
-
ve1ikiy
- Posts: 4
- Joined: Wed Jun 04, 2014 1:59 pm
Re: При импорте бд MySQL выдает ошибку 500
Post
by ve1ikiy » Wed Jun 04, 2014 5:11 pm
Уточню.
Вопрос к разработчикам:
1) Как установить предыдущую версию VestaCP.
2) Если можно решить это без переустановки — как это сделать?
-
ve1ikiy
- Posts: 4
- Joined: Wed Jun 04, 2014 1:59 pm
Re: При импорте бд MySQL выдает ошибку 500
Post
by ve1ikiy » Wed Jun 04, 2014 7:45 pm
yum установил, но я не знаю какой именно пакет нужно даунгрейдить..
И еще вопрос, при установке панели скачивается ее скрипт, так вот, в этом скрипте написано что панель версии 0.9.8, значит она обновляется уже в процессе установки, не могли бы вы подсказать, как сделать так, чтобы она ничего не обновляла, а ставила только те компоненты, и только те настройки, которые были раньше?
-
imperio
- VestaCP Team
- Posts: 6991
- Joined: Sat Dec 01, 2012 12:37 pm
- Contact:
Re: При импорте бд MySQL выдает ошибку 500
Post
by imperio » Wed Jun 04, 2014 8:07 pm
На данный момент это не представляется возможным.
Через релиз появится конфигуратор в начале установки. А что вас смущает в девятой сборке ?
-
ve1ikiy
- Posts: 4
- Joined: Wed Jun 04, 2014 1:59 pm
Re: При импорте бд MySQL выдает ошибку 500
Post
by ve1ikiy » Wed Jun 04, 2014 8:14 pm
Меня смущает то, что «при импорте БД Mysql выдает ошибку 500», а затем при попытке добавить запись в БД mysql уходит в офф. Такую ошибку он выдает на выделенном чистом сервере, на котором установлена только VestaCP. Повторюсь — сервер выделенный, а значит никаких примесей настроек со стороны хостера нет.
Сервер покупался для того, чтобы переехать на него с VDS, на которой сейчас и висит сайт. На этом VDS все работает нормально, ничего не падает в офф, хотя настройки my.conf и остальной чуши такие же самые как и на выделенном сервере.
ЕДИНСТВЕННОЕ отличие — разные версии панели управления.
Включив дедукцию, я пришел к выводу что виновна панель, и решил узнать, как установить старую версию панели на которой все работает.
Вот что мне выдает, когда я хочу сделать downgrade — http://yadi.sk/d/Rt-wMOY2SJEfj
-
imperio
- VestaCP Team
- Posts: 6991
- Joined: Sat Dec 01, 2012 12:37 pm
- Contact:
Re: При импорте бд MySQL выдает ошибку 500
Post
by imperio » Wed Jun 04, 2014 8:29 pm
Предоставьте полный доступ на сервер в личку, а также размер импортируемой базы.
-
radiolip
- Posts: 145
- Joined: Wed Oct 29, 2014 6:50 pm
Re: При импорте бд MySQL выдает ошибку 500
Post
by radiolip » Sun Nov 23, 2014 6:12 pm
разбер бд 150 мб, в архиве 5мб, при импорте выдает 500 ошибка. Как ипортировать базы то? сайт не работает. ((( Лимит на время выставил вроде большой в php.ini
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radiolip
- Posts: 145
- Joined: Wed Oct 29, 2014 6:50 pm
Re: При импорте бд MySQL выдает ошибку 500
Post
by radiolip » Sun Nov 23, 2014 6:22 pm
если импортировать файл бд без .зип, то до 2% доходит загрузка, и Соединение сброшено. . Блин как же выгрузить бд?
-
imperio
- VestaCP Team
- Posts: 6991
- Joined: Sat Dec 01, 2012 12:37 pm
- Contact:
Re: При импорте бд MySQL выдает ошибку 500
Post
by imperio » Sun Nov 23, 2014 6:26 pm
Нужно смотреть логи ошибок. Такого не должно происходить. На наших тест серверах не воспроизводится.
Если не разберетесь, залейте через программу SypexDumper
HTTP Error 500, also known as the internal server error, is a generic error message indicating an unexpected condition was encountered and no more specific message is suitable. This error can be frustrating, especially when you’re working on a local development environment with PHP, Apache, and MySQL on Ubuntu. In this article, we’ll guide you through the steps to troubleshoot and fix this issue.
To fix HTTP Error 500 on localhost with PHP, Apache, and MySQL on Ubuntu, you can start by enabling error reporting in PHP to identify any PHP errors causing the issue. Additionally, checking and modifying the .htaccess file in your server root directory can help resolve the error. If the error persists, manually enabling error reporting in individual PHP files can help isolate the issue.
- Enabling Error Reporting in PHP
- Checking the .htaccess File
- Enabling Error Reporting in Individual PHP Files
- Conclusion
Enabling Error Reporting in PHP
The first step in resolving HTTP Error 500 is to enable error reporting in PHP. This will allow you to see any PHP errors that may be causing the issue.
To enable error reporting, you need to modify the php.ini file. This file is the default configuration file for running applications that require PHP. It controls many aspects of PHP’s behavior.
- Open the terminal and use the
nanocommand to open thephp.inifile:
sudo nano /etc/php/7.0/apache2/php.iniReplace 7.0 with your PHP version if different.
- In the
php.inifile, look for the line that readsdisplay_errors = Offand change it todisplay_errors = On. This directive controls whether or not and where PHP will output errors, notices and warnings. Setting this toOnwill display errors in your browser, which can help with debugging. - Similarly, find the line
display_startup_errors = Offand change it todisplay_startup_errors = On. This directive controls whether PHP will display errors that occur during PHP’s startup sequence. - Save the changes and exit the file by pressing
CTRL + X, thenYto confirm saving changes, and finallyENTERto exit. - Restart the Apache server for the changes to take effect:
sudo systemctl restart apache2For Ubuntu 14.04 and older, use sudo service apache2 restart.
Checking the .htaccess File
The .htaccess file is a configuration file that allows you to control behavior and settings for the directory where it’s located and all sub-directories. If this file is configured incorrectly, it can cause HTTP Error 500.
- Navigate to your server root directory. On Ubuntu, this is typically
/var/www/htmlfor Ubuntu 14.04 and newer, or/var/wwwfor older versions. - If there is an
.htaccessfile in this directory, rename or temporarily remove it:
mv .htaccess .htaccess.bak- Reload your website in your browser. If the error is resolved, then the issue was with the
.htaccessfile. You’ll need to review the file to identify the problematic directive or rule.
Enabling Error Reporting in Individual PHP Files
If the error persists, you can manually enable error reporting in your PHP files. This can be useful for isolating the issue to a specific file or section of code.
Add the following lines at the beginning of your PHP file:
error_reporting(E_ALL);
ini_set('display_errors', 1);error_reporting(E_ALL) will turn on all PHP errors, warnings, and notices for your script. ini_set('display_errors', 1) will display those errors to the browser.
Conclusion
By following these steps, you should be able to identify and fix the cause of HTTP Error 500 on your localhost environment with PHP, Apache, and MySQL on Ubuntu. Remember to always back up your files before making any changes, and never display PHP errors on a live website, as it can expose sensitive information. Instead, log errors to a file that you can review: this can be enabled via the php.ini file. Happy debugging!
HTTP Error 500, also known as the internal server error, is a generic error message indicating an unexpected condition was encountered and no more specific message is suitable. It typically occurs when there is an issue with the server configuration or the code being executed.
To enable error reporting in PHP, you need to modify the php.ini file. Open the terminal and use the command sudo nano /etc/php/7.0/apache2/php.ini (replace 7.0 with your PHP version if different). In the php.ini file, look for the lines display_errors = Off and display_startup_errors = Off and change them to display_errors = On and display_startup_errors = On respectively. Save the changes, exit the file, and restart the Apache server for the changes to take effect.
If the error persists, you can check the .htaccess file in your server root directory. If there is an .htaccess file, rename or temporarily remove it. Reload your website in the browser to see if the error is resolved. If not, you can manually enable error reporting in individual PHP files by adding the lines error_reporting(E_ALL); and ini_set('display_errors', 1); at the beginning of the PHP file.
To identify the problematic directive or rule in the .htaccess file, you’ll need to review its content. Look for any lines that could be causing conflicts or errors. It’s recommended to review the documentation of the specific software or framework you’re using to understand the valid syntax and rules for the .htaccess file.
No, it is not recommended to display PHP errors on a live website as it can expose sensitive information and potentially compromise the security of your application. Instead, you should log errors to a file that you can review. This can be enabled via the php.ini file by setting the log_errors directive to On and specifying the error_log file path.
Last updated November 15, 2018
Sometimes when running a migration you’ll encounter a server error. These can show up as a “500 Internal Server Error”, “Internal Server Error”, “502 bad gateway” a 404 or 400 message or a combination of error message wording.
Oftentimes you will also get a similar response from WP Migrate DB Pro:
Our AJAX request was expecting JSON but we received something else.
Whatever these errors are named and however they occur, there is one commonality — they’re caused by something going wrong on your server.
What Causes Them
There are many reasons these errors occur, some of the common reasons we’ve seen shared by customers are:
- Firewalls
- One of the most common cases of server errors we see are errors caused by security measures. This can be a plugin like Wordfence, an Apache module like ModSecurity, or another firewall software.
- PHP memory exhaustion
- The PHP process requires more memory than is available on your server memory and crashes.
- Serialized data
- Similar to memory exhaustion, sometimes your wp_options table will have a large chunk of serialized data in one of the records. While running the find & replace on this record the PHP and/or MySQL process may crash.
- MySQL server errors
- Sometimes your MySQL server may crash due to errors in the database (duplicate unique keys, corrupt data).
- Syntax error
- Sometimes plugins and/or themes can contain PHP syntax errors or use incorrect coding practices. These can lead to PHP warnings and notices to be generated.
- Outdated PHP version
- Similar to syntax errors, an outdated PHP version (especially < PHP 5.4) can cause errors in plugins and/or themes that don’t support outdated PHP versions.
Fixing Errors: Where to Look For Clues
In every scenario above, the best place to look for clues on what went wrong is your server’s error logs. If you’re using a managed WordPress host like WP Engine, Flywheel or Kinsta, there should be an area in your host’s admin panel where you can find error logs.
If your web host provides a control panel like Plesk or cPanel to manage your server, there will also be section to download or view your error logs.
If you can’t find your error logs or they are empty, follow up with your host to see if they can help you track them down.
Without specific information about the error that occurred it’s extremely difficult to solve migration issues.
We’ll ask for these logs in support when we see that you’re encountering a server error, so please send them with your initial request to speed things along 🚤!
PHP Specific Errors
In your local development environment enabling error reporting and logging can help you catch any errors before they’re pushed to production.
To enable error reporting locally, in your php.ini file add (or uncomment) the following:
error_reporting = E_ALL
display_errors = On
If you’re using something like MAMP or Local By Flywheel locally these should already be set.
On your production server you’ll want to keep display_errors = Off but enable log_errors.
log_errors = On
error_log = ‘/path/to/logfile’
WP_DEBUG_LOG
For WordPress-specific errors you can enable WP_DEBUG and WP_DEBUG_LOG as well. This will report PHP errors that occur during WordPress’ execution.
In your wp-config.php file add the following to enable logging:
define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', true );
When WP_DEBUG_LOG is enabled, a file located at <webroot>/wp-content/debug.log will be created and PHP errors will be logged when they occur.
To ensure error aren’t also rendered on the page you can also add the following to the wp-config.php file:
define('WP_DEBUG_DISPLAY', false);
It should be noted that because the debug.log file is located in the wp-content this file will be publicly accessible. Caution should be used when enabling this setting in production environments.
It is highly encouraged to enable WP_DEBUG in your development environment so that PHP errors can be caught early.