Manual:$wgDebugPrintHttpHeaders

Debug: $wgDebugPrintHttpHeaders
Print HTTP headers for every request in the debug information.
Introduced in version:1.16.0 (r61582)
Removed in version:1.34.0 (Gerrit change 522580; git #9d2ebacb)
Allowed values:(boolean)
Default value:true

DetailsEdit

Print HTTP headers for every request in the debug information.