[Bug]: Can we disable injection of DD tracing headers for some requests?

[laneworrall]

Bug report

This is a parallel request for Can we disable injection of DD tracing headers for some requests? and same question for JS DataDog/dd-trace-js#3662.

PHP version

8.1.30

Tracer or profiler version

1.16.0

Installed extensions

[PHP Modules]
bcmath
calendar
Core
ctype
curl
datadog-profiling
date
ddappsec
ddtrace
dom
exif
FFI
fileinfo
filter
ftp
gd
gettext
hash
iconv
imagick
intl
json
libxml
mbstring
mongodb
mysqli
mysqlnd
openssl
pcntl
pcre
PDO
pdo_mysql
pdo_pgsql
pgsql
Phar
posix
readline
Reflection
session
shmop
SimpleXML
soap
sockets
sodium
SPL
standard
sysvmsg
sysvsem
sysvshm
tokenizer
xdebug
xml
xmlreader
xmlwriter
xsl
Zend OPcache
zip
zlib

[Zend Modules]
Xdebug
Zend OPcache
datadog-profiling
ddappsec
ddtrace

Output of phpinfo()

No response

Upgrading from

0.84.0 is not injecting the headers.
1.16.0 with unified service tagging, causes an issue where we are signing a request to ans AWS service. the service fails as the request does not match the signature generated before the request.

[bwoebi]

Hey @laneworrall,

ini_set("datadog.distributed_tracing", "0"); will disable it, until you set it back to "1".

There's no functionality to globally disable it for only some requests, matching specific urls. But maybe that's totally sufficient for you?

[laneworrall]

We would like to only disable it for specific requests only. As part of setting up the unified tagging, we identified a few URLs that are not tolerant to adding the additional datadog headers to the request, therefore the associated functionality is broken. This requires us to hold on implementing the unified tagging until this ability exists.