class-upgrade-routines.php
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<?php
/**
* Class MC4WP_DB_Upgrader
*
* This class takes care of loading migration files from the specified migrations directory.
* Migration files should only use default WP functions and NOT use code which might not be there in the future.
*
* @ignore
*/
class MC4WP_Upgrade_Routines
{
/**
* @var float
*/
protected $version_from = 0;
/**
* @var float
*/
protected $version_to = 0;
/**
* @var string
*/
protected $migrations_dir = '';
/**
* @param float $from
* @param float $to
*/
public function __construct($from, $to, $migrations_dir)
{
$this->version_from = $from;
$this->version_to = $to;
$this->migrations_dir = $migrations_dir;
}
/**
* Run the various upgrade routines, all the way up to the latest version
*/
public function run()
{
$migrations = $this->find_migrations();
// run in sub-function for scope
array_map(array( $this, 'run_migration' ), $migrations);
}
/**
* @return array
*/
public function find_migrations()
{
$files = glob(rtrim($this->migrations_dir, '/') . '/*.php');
$migrations = array();
// return empty array when glob returns non-array value.
if (! is_array($files)) {
return $migrations;
}
foreach ($files as $file) {
$migration = basename($file);
$parts = explode('-', $migration);
$version = $parts[0];
if (version_compare($this->version_from, $version, '<')) {
$migrations[] = $file;
}
}
return $migrations;
}
/**
* Include a migration file and runs it.
*
* @param string $file
*/
protected function run_migration($file)
{
include $file;
}
}