Current File : /home/jalalj2hb/www/wp-content/plugins/ninja-forms/includes/Abstracts/Migration.php
<?php if ( ! defined( 'ABSPATH' ) ) exit;
require_once( ABSPATH . 'wp-admin/includes/upgrade.php');
abstract class NF_Abstracts_Migration
{
public $table_name = '';
public $charset_collate = '';
public $flag = '';
public function __construct( $table_name, $flag )
{
$this->table_name = $table_name;
}
public function table_name()
{
global $wpdb;
return $wpdb->prefix . $this->table_name;
}
public function charset_collate()
{
global $wpdb;
// If our mysql version is 5.5.3 or higher...
if ( version_compare( $wpdb->db_version(), '5.5.3', '>=' ) ) {
// We can use mb4.
return 'DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci';
} // Otherwise...
else {
// We use standard utf8.
return 'DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci';
}
}
/**
* Function to get the column collate for ALTER TABLE statements.
*
* @since 3.3.7
*
* @return string
*/
public function collate()
{
global $wpdb;
// If our mysql version is 5.5.3 or higher...
if ( version_compare( $wpdb->db_version(), '5.5.3', '>=' ) ) {
// We can use mb4.
return 'COLLATE utf8mb4_general_ci';
} // Otherwise...
else {
// We use standard utf8.
return 'COLLATE utf8_general_ci';
}
}
/**
* Function to run our stage one db updates.
*/
public function _stage_one()
{
if ( method_exists( $this, 'do_stage_one' ) ) {
$this->do_stage_one();
}
}
public function _run()
{
// Check the flag
if( get_option( $this->flag, FALSE ) ) return;
// Run the migration
$this->run();
// Set the Flag
update_option( $this->flag, TRUE );
}
protected abstract function run();
public function _drop()
{
global $wpdb;
if( ! $this->table_name ) return;
if( 0 == $wpdb->query( $wpdb->prepare( "SHOW TABLES LIKE '%s'", $this->table_name() ) ) ) return;
$wpdb->query( "DROP TABLE " . $this->table_name() );
return $this->drop();
}
protected function drop()
{
// This section intentionally left blank.
}
}
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