/**
* Checks if a class exists and try to load it.
* Will return the default class name back if the
* file for some subclass is not available
*
* @param string $class The class name to check
*
* @return string
*/
private static function _checkClass($class)
{
$class = sprintf(self::$_namespace, $class);
if (!class_exists($class) && !Psr4Autoloader::getInstance()->loadClass($class)) {
$class = sprintf(self::$_namespace, 'Node');
trigger_error(sprintf(__('Could not load class "%1$s"'), $class), E_USER_ERROR);
}
return $class;
}
<?php
require_once './libraries/Psr4Autoloader.php';
// instantiate the loader
$loader = \PMA\Psr4Autoloader::getInstance();
// register the autoloader
$loader->register();
// register the base directories for the namespace prefix
$loader->addNamespace('PMA', '.');
$loader->addNamespace('SqlParser', './libraries/sql-parser/src');