Raspberry Pi-php-exec

The problem is the Web server built on the Raspberry Pi, want to control the Raspberry Pi Gpio through the Web page, the webpage is implemented by PHP, through the PHP exec function call write good program implementation of the GPIO operation, but depend what no effect, analysis also know is the authority problem, The original idea was that by upgrading Apache's permissions, such as letting Apacheu run as root, it was really a stupid idea,,,. This is followed by a fuss about sudo configuration files:

/etc/sudoers:

Add to:

Www-data Raspberrypi=nopasswd:script-name

Raspberry Pi-php-exec