What steps can be taken to increase error reporting in PHP and check log files for potential issues when encountering display problems with PHP files?

To increase error reporting in PHP and check log files for potential issues when encountering display problems with PHP files, you can modify the php.ini file to set error reporting to a higher level, enable logging of errors to a file, and check the log file for any reported issues.

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

// Enable error logging to a file
ini_set('log_errors', 'On');
ini_set('error_log', '/path/to/error.log');

// Check log file for potential issues
$logFile = '/path/to/error.log';
if (file_exists($logFile)) {
    $errors = file_get_contents($logFile);
    echo $errors;
} else {
    echo 'No errors found in log file.';
}