automatic getting m3u8 file with wmAuthSign

[Eng.AHmD]

Dear All

I am facing a little strange problem to get m3u8 file automatically

when i am using the android app the app generates the code automatically from the developer site, if i have access to the wmAuthSign url and i've developed php code to generate the file url using the right token "wmAuthSign" but when i am trying to access the file i am getting Forbidden while if the code generated by the mobile app or by kodi the m3u8 file became accessible

so what is the wrong in the code generated by my code if it is using the source token generator

Thank you in advance