Install extension for macOS built-in PHP

macOS High Sierra 10.13.3 ships with PHP 7.1.7. I’m trying to install an extension for the built-in PHP. I tried the pecl command but no lucky because SIP (System Integrity Protection) protection. I can’t add file under the directory /usr/lib/php that default php extension directory.

It’s a little difficult but I installed an extension success by compiling manually

Prepare

• Install packages

brew install autoconf pcre

• Download PHP source files for built-in PHP

xcode-select --install

• Edit the /etc/php.ini, change the extension_dir to /usr/local/lib/php/extensions. The directory is writable. You should make the directory yourself.
• Copy all extension files from /usr/lib/php/extensions to /usr/local/lib/php/extensions
• Download the extension file and compile it
• Edit /usr/bin/php-config, find line

extension_dir='/usr/local/lib/php/extensions/no-debug-non-zts-20090626'

and replace it with

extension_dir='/usr/local/lib/php/extensions'

Compile extension

For example, I compile swoole extension with these steps.

• Download swoole-2.1.1.tgz from pecl.php.net
• Unzip the file and compile the extension

tar xzvf swoole-2.1.1.tgz
cd swoole-2.1.1
phpize
./configure
make
make install