Open PHP Debugging _php Tutorial

1. The configuration file involved:
/etc/php5/apache2/php.ini
2. Specific line:
Display_errors =
error_reporting =
3. Remember to restart the service

Error reporting for PHP
There are many configuration settings in the php.ini file. You should have your own php.ini file set up and put it in the appropriate directory, as shown in the documentation for installing PHP and Apache 2 on Linux (see Resources). When debugging a PHP application, you should know two configuration variables. The following are the two variables and their default values:
Display_errors = Off
error_reporting = E_all

By searching for them in the php.ini file, you can find the current default values for both variables. The purpose of the display_errors variable is obvious-it tells PHP if it shows an error. The default value is OFF. However, to make the development process easier, please set this value to on:
Display_errors = On

The default value for the error_reporting variable is e_all. This setting shows all the information from bad coding practices to harmless prompts to errors. E_all is a bit too thin for the development process because it shows hints on the screen for small things (such as uninitialized variables), which can mess up the browser's output. I just want to see errors and bad coding practices, but don't want to see harmless hints. Therefore, replace the default value of error_reporting with the following values:
error_reporting = E_all & ~e_notice

Restart Apache and it's all set up.

Error reporting on the Apache server
Depending on what Apache is doing, opening an error report in PHP may not work because there may be multiple versions of PHP on your computer. It is sometimes difficult to tell which PHP version Apache is using because Apache can only view one php.ini file. It is a security issue to not know which php.ini file Apache is using to configure itself. However, there is a way to configure PHP variables in Apache to ensure that the correct level of error is set.
Also, it is best to know how to set these configuration variables on the server side to veto or preempt php.ini files, providing a higher level of security.
When you configure Apache, you should have been exposed to the basic configuration in the http.conf file in/conf/httpd.conf.
To do what has already been done in the php.ini file, add the following lines to httpd.conf, overwriting any php.ini files:
Php_flag display_errors on
Php_value error_reporting 2039

This overrides the flags already set for display_errors in the php.ini file, as well as the value of error_reporting. A value of 2039 represents E_all & ~e_notice. If you prefer to use E_all, set the value to 2047. Again, you'll restart Apache.
Next, you will test the error report on the server.
Test Error Report
If you start an error report, you save a lot of time. Errors in PHP can point to errors in your code.

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