Can I hook error_log(… )?

1. What is Error_log?
2. Where does Error_log write to?
3. How do you write an error log?
4. How do I create a PHP error log?
5. Where does PHP Error_log go?
6. How do I debug PHP?
7. How do I view nginx logs?
8. Where is the log file in laravel?
9. Can you console log in PHP?
10. What is error logging in Unix?
11. How do I view mysql error logs?
12. How do I enable logging in MariaDB?

What is Error_log?

In computer science, an error log is a record of critical errors that are encountered by the application, operating system or server while in operation. Some of the common entries in an error log include table corruption and configuration corruption.

Where does Error_log write to?

If you have build Apache and PHP from source, then the error logs by default is generated at your $Apache install dir/logs/error_log i.e generally /usr/local/apache2/logs/error_log . Else, if you have installed it from repository, you will find it at /var/log/apache2/error_log . You can set the path in your php.

How do you write an error log?

print_r($v, TRUE) : logs $v (array/string/object) to log file. 3 : Put log message to custom log file specified in the third parameter. '/var/tmp/errors. log' : Custom log file (This path is for Linux, we can specify other depending upon OS).

How do I create a PHP error log?

The ini_set(“log_errors”, TRUE) command can be added to the php script to enable error logging in php. The ini_set('error_log', $log_file) command can be added to the php script to set the error logging file. Further error_log($error_message) function call can be used to log error message to the given file.

Where does PHP Error_log go?

There are two possible values for error_log: a custom log file and the syslog. If the syslog is used, then all PHP errors will be sent directly to the default system log file—in Linux, this is typically /var/log/syslog. The more manageable method is to use a custom log file.

How do I debug PHP?

Here are the steps to doing PHP programming:

1. Check for PHP extensions in VS Code.
2. Install the PHP Debug extension.
3. Click “reload” to reload VS Code.
4. Install Xdebug. ...
5. Now when you have the right version, put it in the PHP/ext directory.
6. Next, you need to configure PHP to use the extension and allow remote debugging.

How do I view nginx logs?

By default, NGINX writes its events in two types of logs – the error log and the access log. In most of the popular Linux distro like Ubuntu, CentOS or Debian, both the access and error log can be found in /var/log/nginx , assuming you have already enabled the access and error logs in the core NGINX configuration file.

Where is the log file in laravel?

By default, Laravel is configured to create a single log file for your application, and this file is stored in app/storage/logs/laravel. log .

Can you console log in PHP?

There are two main ways you can log directly to the console using (mostly) PHP code. I can summarize it as using json_encode function and using PHP libraries.

What is error logging in Unix?

2.2 Error Logging on Unix and Unix-Like Systems. On Unix and Unix-like systems, mysqld uses the --log-error option to determine whether mysqld writes the error log to the console or a file, and, if to a file, the file name: If --log-error is not given, mysqld writes the error log to the console.

How do I view mysql error logs?

You have to activate the query logging in mysql.

1. edit /etc/my.cnf [mysqld] log=/tmp/mysql.log.
2. restart the computer or the mysqld service service mysqld restart.
3. open phpmyadmin/any application that uses mysql/mysql console and run a query.
4. cat /tmp/mysql.log ( you should see the query )

How do I enable logging in MariaDB?

How to enable the MySQL/MariaDB general query logs

1. SET GLOBAL general_log_file='/var/log/mysql/mycustom. log';
2. SET GLOBAL log_output = 'FILE';
3. SET GLOBAL general_log = 'ON';
4. SHOW VARIABLES LIKE "general_log%";
5. SET GLOBAL general_log = 'OFF';