in src/com/jetbrains/php/tools/quality/phpstan/PhpStanOptionsPanel.java [66:73]
public void reset() {
PhpStanOptionsConfiguration configuration = PhpStanOptionsConfiguration.getInstance(myProject);
myFullProjectRunJBCheckBox.setSelected(configuration.isFullProject());
myMemoryLimitTextField.setText(configuration.getMemoryLimit());
myJBIntSpinner.setNumber(configuration.getLevel());
myConfigPathTextField.setText(configuration.getConfig());
myAutoloadPathTextField.setText(configuration.getAutoload());
}