How can I extract the value (value) of the input found on this website: link
I am not a programmer and I have basic knowledge of php.
The value I want to extract is the value of this url. (ID="__ VIEWSTATE"), I want to extract it because it changes every certain hour.
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKMTkzMDExNzU0NQ9kFgICAQ9kFgICBQ8QDxYGHg1EYXRhVGV4dEZpZWxkBQdOb21TZWRlHg5EYXRhVmFsdWVGaWVsZAUHQ29kU2VkZR4LXyFEYXRhQm91bmRnZBAVBwdKVUxJQUNBBFBVTk8FSUxBVkUIQVJFUVVJUEEJQVrDgU5HQVJPB0FZQVZJUkkESlVMSRUHAjAxAjAyAjAzAjA0AjA1AjA2AjA3FCsDB2dnZ2dnZ2cWAWZkZJmsd+7t9tOQXwW3RL8/VDcWWIqCdh+xN+awDXvjvHxP" />