yum安裝php的,默認是不安裝pcntl的,因此需要單獨編譯安裝,首先下載對應版本的php,解壓後
cd php-version/ext/pcntl
phpize
./configure && make && make install
cp /usr/lib/php/modules/pcntl.so /usr/lib64/php/modules/pcntl.so
echo "extension=pcntl.so" >> /etc/php.ini
/etc/init.d/httpd restart