Fix setup with spaces in path to php binary

[bwoebi]

e.g. C:\Program Files\php\php.exe

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.74%. Comparing base (14de5d5) to head (f9ffd42).

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #2803   +/-   ##
=========================================
  Coverage     80.74%   80.74%           
  Complexity     2452     2452           
=========================================
  Files           144      144           
  Lines         14344    14344           
=========================================
  Hits          11582    11582           
  Misses         2762     2762           

Flag	Coverage Δ
tracer-extension	78.27% <ø> (ø)
tracer-php	81.80% <ø> (ø)

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