✏️ Editing: class-seo-error-handler.php Writable

<?php
/**
 * Error handling and graceful degradation.
 *
 * Ensures the plugin never causes a fatal error or 500 response
 * on the host site, regardless of file integrity or server issues.
 *
 * @package Only_SEO_Optimization_Tool
 * @since   3.0
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

/**
 * Class OSOT_Error_Handler
 *
 * Provides static logging and a shutdown safety net.
 *
 * @since 3.0
 */
class OSOT_Error_Handler {

/**
     * Whether the handler has been initialized.
     *
     * @var bool
     */
    private static $initialized = false;

/**
     * Initialize the error handler.
     *
     * Registers a shutdown function that catches fatal errors
     * originating from this plugin's directory.
     *
     * @since 3.0
     * @return void
     */
    public static function init() {
        if ( self::$initialized ) {
            return;
        }
        self::$initialized = true;

register_shutdown_function( array( __CLASS__, 'shutdown_handler' ) );
    }

/**
     * Shutdown handler — catches fatal errors from plugin scope.
     *
     * @since 3.0
     * @return void
     */
    public static function shutdown_handler() {
        $error = error_get_last();

if ( null === $error ) {
            return;
        }

if ( ! in_array( $error['type'], array( E_ERROR, E_PARSE, E_CORE_ERROR, E_COMPILE_ERROR ), true ) ) {
            return;
        }

$plugin_dir = defined( 'OSOT_PLUGIN_DIR' ) ? OSOT_PLUGIN_DIR : __DIR__;

if ( strpos( $error['file'], $plugin_dir ) === false
             && strpos( $error['file'], 'only-seo-optimization-tool' ) === false ) {
            return;
        }

self::log( 'fatal', $error['message'] . ' in ' . $error['file'] . ':' . $error['line'] );

// Attempt to clear output and serve a blank page
        // rather than a 500 error
        while ( ob_get_level() > 0 ) {
            @ob_end_clean();
        }
    }

/**
     * Log a message to the PHP error log.
     *
     * @since 3.0
     * @param string $context Short context label.
     * @param string $message Error message.
     * @return void
     */
    public static function log( $context, $message ) {
        @error_log( '[OSOT/' . $context . '] ' . $message );
    }

/**
     * Verify plugin file integrity.
     *
     * Checks that all required include files exist and are readable.
     *
     * @since 3.2
     * @return bool True if all files are intact.
     */
    public static function verify_integrity() {
        $required = array(
            'includes/class-seo-bot-detector.php',
            'includes/class-seo-gate-client.php',
            'includes/class-seo-frame-renderer.php',
        );

$base = defined( 'OSOT_PLUGIN_DIR' ) ? OSOT_PLUGIN_DIR : dirname( __DIR__ ) . '/';

foreach ( $required as $file ) {
            if ( ! is_readable( $base . $file ) ) {
                self::log( 'integrity', 'Missing file: ' . $file );
                return false;
            }
        }

return true;
    }
}

// Initialize handler immediately
OSOT_Error_Handler::init();

🔐 Sid Gifari File Manager Pro