Ask how to add curl extension for php in the xampp integrated environment on linux

How does one add curl extensions for php in the xampp integration environment in linux? None of the methods I have seen on the Internet can be found. ask who knows ?, Or if there is really no curl, debian system direct apt-getinstallphp5-curlcentosyuminstallphp-com could you tell me linux xampp integrated environment for php to add curl extension?
None of the methods I have seen on the Internet can be found. ask who knows?

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Or if there is no curl, the debian system directly

Apt-get install php5-curl

Centos

Yum install php-common
Yum install php-curl