What are the potential reasons for PHP errors not being logged despite proper configuration?

The potential reasons for PHP errors not being logged despite proper configuration could include incorrect file permissions on the log file, misconfigured error_reporting settings in the php.ini file, or errors being suppressed with the @ symbol in the code. To solve this issue, ensure that the log file has the correct permissions for PHP to write to it, set error_reporting to E_ALL in the php.ini file, and remove any @ symbols suppressing errors in the code.

// Set error reporting to E_ALL in php.ini file
error_reporting(E_ALL);

// Remove @ symbol suppressing errors in the code
// Instead of this:
@$variable = 10;
// Use this:
$variable = 10;