I found different examples of reading XML with PHP. But could not one get working for me. It's not so difficult to read lan en lon, but I want to read the extensions like temperature too.
Data (from comment)
<trkpt lat="30.3248708043" lon="35.4718816280">
<ele>1051.62</ele>
<time>2019-10-16T02:53:21Z</time>
<extensions>
<gpxtpx:TrackPointExtension>
<gpxtpx:atemp>24.7</gpxtpx:atemp>
</gpxtpx:TrackPointExtension>
</extensions>
</trkpt>
<trkpt lat="30.3249898273" lon="35.4719382059">
<ele>1051.62</ele>
<time>2019-10-16T02:53:45Z</time>
<extensions>
<gpxtpx:TrackPointExtension>
<gpxtpx:atemp>24.4</gpxtpx:atemp>
</gpxtpx:TrackPointExtension>
</extensions>
</trkpt>