docs: Update php documentation to include context provider (#1000)
docs: Update php documentation to include context provider (#1000)

* Update php documentation to include context provider

* Update leftover from java

* Remove another Java leftover

Co-authored-by: Ivar Conradi Østhus <8e83882b15ff114fb9a890949a8a11ac2c97981b@gmail.com>
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