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253
igny8-ai-seo-wp-plugin/core/db/db-migration.php
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253
igny8-ai-seo-wp-plugin/core/db/db-migration.php
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<?php
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/**
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* ==========================
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* 🔐 IGNY8 FILE RULE HEADER
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* ==========================
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* @file : db-migration.php
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* @location : /core/db/db-migration.php
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* @type : Function Library
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* @scope : Global
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* @allowed : Database migrations, schema updates, version tracking
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* @reusability : Globally Reusable
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* @notes : Database migration system for schema updates
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*/
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// Prevent direct access
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if (!defined('ABSPATH')) {
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exit;
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}
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/**
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* ========================================================================
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* MIGRATION SYSTEM TEMPLATE
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* ========================================================================
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*/
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/**
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* Get current database version
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*/
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function igny8_get_db_version() {
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return get_option('igny8_db_version', '0.1');
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}
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/**
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* Set database version
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*/
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function igny8_set_db_version($version) {
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update_option('igny8_db_version', $version);
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}
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/**
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* Check if migration is needed
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*/
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function igny8_is_migration_needed($target_version = null) {
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if (!$target_version) {
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$target_version = '0.1'; // Current version
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}
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$current_version = igny8_get_db_version();
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return version_compare($current_version, $target_version, '<');
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}
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/**
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* Run all pending migrations
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*/
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function igny8_run_migrations() {
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$current_version = igny8_get_db_version();
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$target_version = '0.1';
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if (!igny8_is_migration_needed($target_version)) {
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return true; // No migration needed
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}
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// Example migration structure:
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// if (version_compare($current_version, '2.7.0', '<')) {
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// igny8_migration_270();
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// }
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// if (version_compare($current_version, '2.7.1', '<')) {
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// igny8_migration_271();
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// }
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// Update to latest version
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igny8_set_db_version($target_version);
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return true;
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}
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/**
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* ========================================================================
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* MIGRATION FUNCTIONS TEMPLATE
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* ========================================================================
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*/
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/**
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* Example migration function template
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*
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* @param string $from_version Version migrating from
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* @param string $to_version Version migrating to
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*/
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function igny8_migration_template($from_version, $to_version) {
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global $wpdb;
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try {
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// Example: Add new column
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// $table_name = $wpdb->prefix . 'igny8_example_table';
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// $column_exists = $wpdb->get_var("SHOW COLUMNS FROM `$table_name` LIKE 'new_column'");
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// if (!$column_exists) {
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// $wpdb->query("ALTER TABLE `$table_name` ADD COLUMN `new_column` VARCHAR(255) DEFAULT NULL");
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// }
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// Example: Create new table
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// $sql = "CREATE TABLE IF NOT EXISTS {$wpdb->prefix}igny8_new_table (
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// id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
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// name VARCHAR(255) NOT NULL,
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// created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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// PRIMARY KEY (id)
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// ) {$wpdb->get_charset_collate()};";
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// dbDelta($sql);
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// Example: Migrate data
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// $wpdb->query("UPDATE {$wpdb->prefix}igny8_table SET old_field = new_field WHERE condition");
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error_log("Igny8 Migration: Successfully migrated from $from_version to $to_version");
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return true;
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} catch (Exception $e) {
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error_log("Igny8 Migration Error: " . $e->getMessage());
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return false;
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}
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}
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/**
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* ========================================================================
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* MIGRATION UTILITIES
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* ========================================================================
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*/
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/**
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* Backup table before migration
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*/
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function igny8_backup_table($table_name, $suffix = null) {
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global $wpdb;
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if (!$suffix) {
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$suffix = '_backup_' . date('Y_m_d_H_i_s');
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}
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$backup_table = $table_name . $suffix;
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try {
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$wpdb->query("CREATE TABLE `$backup_table` LIKE `$table_name`");
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$wpdb->query("INSERT INTO `$backup_table` SELECT * FROM `$table_name`");
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return $backup_table;
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} catch (Exception $e) {
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error_log("Igny8 Migration: Failed to backup table $table_name - " . $e->getMessage());
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return false;
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}
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}
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/**
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* Restore table from backup
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*/
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function igny8_restore_table($table_name, $backup_table) {
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global $wpdb;
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try {
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$wpdb->query("DROP TABLE IF EXISTS `$table_name`");
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$wpdb->query("CREATE TABLE `$table_name` LIKE `$backup_table`");
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$wpdb->query("INSERT INTO `$table_name` SELECT * FROM `$backup_table`");
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return true;
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} catch (Exception $e) {
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error_log("Igny8 Migration: Failed to restore table $table_name - " . $e->getMessage());
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return false;
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}
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}
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/**
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* Check if table exists
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*/
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function igny8_table_exists($table_name) {
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global $wpdb;
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return $wpdb->get_var("SHOW TABLES LIKE '$table_name'") === $table_name;
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}
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/**
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* Check if column exists in table
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*/
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function igny8_column_exists($table_name, $column_name) {
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global $wpdb;
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$result = $wpdb->get_var("SHOW COLUMNS FROM `$table_name` LIKE '$column_name'");
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return !empty($result);
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}
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/**
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* Get table structure
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*/
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function igny8_get_table_structure($table_name) {
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global $wpdb;
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return $wpdb->get_results("DESCRIBE `$table_name`", ARRAY_A);
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}
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/**
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* ========================================================================
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* AUTO-MIGRATION ON PLUGIN UPDATE
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* ========================================================================
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*/
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/**
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* Auto-run migrations on plugin update
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*/
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function igny8_auto_run_migrations() {
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if (current_user_can('manage_options') && igny8_is_migration_needed()) {
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igny8_run_migrations();
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}
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}
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// Hook to auto-run migrations on admin_init
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add_action('admin_init', 'igny8_auto_run_migrations');
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/**
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* ========================================================================
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* MIGRATION STATUS & LOGGING
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* ========================================================================
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*/
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/**
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* Log migration event
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*/
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function igny8_log_migration($from_version, $to_version, $status = 'success', $message = '') {
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$log_entry = [
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'timestamp' => current_time('mysql'),
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'from_version' => $from_version,
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'to_version' => $to_version,
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'status' => $status,
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'message' => $message,
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'user_id' => get_current_user_id()
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];
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// Store in options (you could also use the logs table)
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$migration_logs = get_option('igny8_migration_logs', []);
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$migration_logs[] = $log_entry;
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// Keep only last 50 migration logs
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if (count($migration_logs) > 50) {
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$migration_logs = array_slice($migration_logs, -50);
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}
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update_option('igny8_migration_logs', $migration_logs);
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}
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/**
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* Get migration logs
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*/
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function igny8_get_migration_logs($limit = 10) {
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$logs = get_option('igny8_migration_logs', []);
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return array_slice(array_reverse($logs), 0, $limit);
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}
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/**
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* Clear migration logs
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*/
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function igny8_clear_migration_logs() {
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delete_option('igny8_migration_logs');
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}
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