Error highlighting & Problems listed on Excluded Files

[PaulSwarthout]

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Issue Type: Bug

1. Create a PHP file inside the open folder with a syntax error in it.
2. Save it.

PHP Intellisense will highlight the filename in red in the Explorer tab. Additionally, it will highlight each parent folder name up the folder tree to the root, indicating a problem.

3. Open VS Code Settings. Find the setting for "Files: Exclude"
4. Add the file you created in step 1 as an excluded file.

The file disappears from the Explorer folder list. This is the expected behavior for VS Code.

Unfortunately, PHP Intellisense still believes the excluded file is part of the project and even though the file no longer appears, PHP Intellisense continues to highlight the parent folders on up the tree in red, indicating a problem.

Further, in the debug console, "Problems" shows errors in the excluded file or files.

I would expect that PHP Intellisense would recognize when files or folders are excluded and not continue to show errors in those files, nor highlight the parent folders in the Explorer tab.

Extension version: 2.3.14 VS Code version: Code 1.49.3 (2af051012b66169dde0c4dfae3f5ef48f787ff69, 2020-10-02T17:57:01.595Z) OS version: Windows_NT x64 10.0.19041

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz (8 x 3392)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: disabled_off opengl: enabled_on protected_video_decode: unavailable_off rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	15.89GB (8.37GB free)
Process Argv	--crash-reporter-id 4a8c61d7-f6d3-495d-9576-c69834d93045
Screen Reader	no
VM	0%