ubuntu安装pcntl扩展

# mkdir php

# cd php

# apt-get source php5

# cd php5-xxx/ext/pcntl/

# phpize

# ./configure

# make

# cp modules/pcntl.so /usr/lib/php5/20121212/

# echo "extension=pcntl.so" > /etc/php5/apache2/php.ini

# service apache2 restart