PHP 7.2.30 安装 pcntl 扩展

1. 下载源码

   wget http://cn.php.net/distributions/php-7.2.30.tar.xz
   

   注：也可以通过pecl install pcntl安装 或 pecl download pcntl 安装，附：下载并安装pecl脚本 cd /usr/local/php/bin/        curl -o go-pear.php http://pear.php.net/go-pear.phar       ./php go-pear.php

2. 解压

   tar -xzvf php-7.2.30.tar.gz
   
3. 到pcntl扩展的目录

   cd php-7.2.30/ext/pcntl
   

4. 编译

   /Applications/MAMP/bin/php/php7.2.30/bin/phpize
   ./configure --prefix=/Applications/MAMP/bin/php/php7.2.30/bin/php --with-php-config=/Applications/MAMP/bin/php/php7.2.30/bin/php-config 
   make && make install
   #输出类似下文
   Installing shared extensions:    
   /Applications/MAMP/bin/php/php7.2.30/lib/php/extensions/no-debug-non-zts-20170718/
   

5. 找出当前PHP的配置文件的位置

   php -i | grep Loaded
   # 输出
   Loaded Configuration File => /Library/Application Support/appsolute/MAMP PRO/conf/php7.2.30.ini
   libXML Loaded Version => 20800
   Loaded plugins => mysqlnd,debug_trace,auth_plugin_mysql_native_password,auth_plugin_mysql_clear_password,auth_plugin_caching_sha2_password,auth_plugin_sha256_password
   

   可以看出配置文件是：/Library/Application Support/appsolute/MAMP PRO/conf/php7.2.30.ini

6. 编辑配置文件，增加一行extension=pcntl.so

7. 检查是否安装成功

   php --ri pcntl