#!/bin/sh

# Script to start and stop the persistent PHP runner for FastCGI.
# Please check paths before use. 

# FastCGI PHP binary
FPHPBIN=/usr/local/webserver/php/bin/php

# Location to place semaphore
SEMFILE=/tmp/php.pid
PHP_FCGI_CHILDREN=20
PHP_FCGI_MAX_REQUESTS=5000
export PHP_FCGI_CHILDREN
export PHP_FCGI_MAX_REQUESTS

# This is Linux - use /proc to increase the local (ephemeral) port range
#echo 1024 65000 > /proc/sys/net/ipv4/ip_local_port_range

if [ -z "$ZEUSHOME" ]
then
  cd `dirname $0`/..
  ZEUSHOME=`pwd`
  export ZEUSHOME
fi

case "$1" in
  'start')

        if [ -e $SEMFILE ]
                then
                        echo FastCGI PHP error: already running.Restart FastCGI PHP now
                	kill `cat $SEMFILE`
			sleep 5
        fi

        if [ ! -x $FPHPBIN ]
                then
                        echo FastCGI PHP error: please check that $FPHPBIN is executable and exists.
                exit 1
        fi

                echo Starting FastCGI PHP.
                $ZEUSHOME/web/bin/fcgirunner --addr=127.0.0.1 --user=65534 --group=65534 --pidfile=$SEMFILE 8002 $FPHPBIN
        ;;

  'stop')
        if [ -e $SEMFILE ]
                then
                echo Stopping FastCGI PHP.
		kill `cat $SEMFILE`
		rm $SEMFILE
                exit 0
        fi
       ;;
  'restart')
        if [ -e $SEMFILE ]
                then
                echo Stopping FastCGI PHP.
                kill `cat $SEMFILE`
		sleep 5
        fi
		echo Starting FastCGI PHP.
		$ZEUSHOME/web/bin/fcgirunner --addr=127.0.0.1 --user=65534 --group=65534 --pidfile=$SEMFILE 8002 $FPHPBIN
       ;;
  *)
    echo "usage: $0 {start|stop|restart}"
    ;;

esac
exit 1


# 对上面的script解释：
# FPHPBIN=/usr/local/bin/php #设置为php的路径
# SEMFILE=/tmp/php.pid #生成php.pid的路径，该目录必须可写

# PHP_FCGI_CHILDREN=100 #php进程数目
# PHP_FCGI_MAX_REQUESTS=1000 #每个php的进程在退出前能够响应的请求数，用于释放资源
# 上面两个根据硬件配置和网站访问量设置，上面的例子是这里的设置，默认值是8,500
# 一般来说 PHP_FCGI_CHILDREN > 访问并发最大值+10
# PHP_FCGI_MAX_REQUESTS 如果设置过小，访问量大的网站会因为php进程重起频繁增加负荷

# echo 1024 65000 > /proc/sys/net/ipv4/ip_local_port_range #只用于linux

# --user=65534 --group=65534 为php进程运行的用户和组，一般设置为nobody用户和组
# FreeBSD是65534/65534，Linux是99/99