lib/IniModifierArray.php
public function isModified()
    {
        foreach ($this->modifiers as $mod) {
            if ($mod instanceof IniModifierInterface && $mod->isModified()) {
                return true;
            }
        }

        return false;
    }
public function isModified()
    {
        foreach ($this->modifiers as $mod) {
            if ($mod instanceof IniModifierInterface && $mod->isModified()) {
                return true;
            }
        }

        return false;
    }
says if the ini content has been modified.

@return bool