Ubuntu下安装PHP+Nginx
?系统环境:Ubuntu12.04 desktop
?
?
1、sudo apt-get install php5-cgi
???(因为nginx只支持fast-cgi,所以要安装php5-cgi)
?提示安装以下资源
?
将会安装下列额外的软件包: libapache2-mod-php5 php5-cli php5-common php5-gd php5-mysql 建议安装的软件包: php-pear php5-suhosin 下列【新】软件包将被安装: php5-cgi 下列软件包将被升级: libapache2-mod-php5 php5-cli php5-common php5-gd php5-mysql
?
2、sudo apt-get install nginx
??
3、vim /etc/nginx/site-available/default
?
server { 21 #listen 80; ## listen for ipv4; this line is default and implied 22 #listen [::]:80 default ipv6only=on; ## listen for ipv6 23 24 root /usr/share/nginx/www; 25 index index.html index.htm; 26 27 # Make site accessible from http://localhost/ 28 server_name localhost; 29 30 location / { 31 # First attempt to serve request as file, then 32 # as directory, then fall back to index.html 33 try_files $uri $uri/ /index.html; 34 # Uncomment to enable naxsi on this location 35 # include /etc/nginx/naxsi.rules 36 } 37 38 location /doc/ { 39 alias /usr/share/doc/; 40 autoindex on; 41 allow 127.0.0.1; 42 deny all; 43 } 44 45 # Only for nginx-naxsi : process denied requests 46 #location /RequestDenied { 47 # For example, return an error code 48 #return 418; 49 #} 50 51 #error_page 404 /404.html; 52 53 # redirect server error pages to the static page /50x.html 54 # 55 #error_page 500 502 503 504 /50x.html; 56 #location = /50x.html { 57 # root /usr/share/nginx/www; 58 #} 59 60 # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 61 # 62 location ~ \.php$ { 63 # fastcgi_split_path_info ^(.+\.php)(/.+)$; 64 # # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini 65 # 66 # # With php5-cgi alone: 67 fastcgi_pass 127.0.0.1:9000; 68 # # With php5-fpm: 69 # fastcgi_pass unix:/var/run/php5-fpm.sock; 70 fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; 71 fastcgi_index index.php; }
?
?sudo /etc/init.d/nginx restart ?(注意这里以sduo的方式重启,否则因为权限文件报错)
?
4、vim index.php ? (在 ?/usr/share/nginx/www 下面创建文件index.php测试)
?
?
<?php echo "hello world"; ?>?
结果出现如下错误:connect() failed (111: Connection refused) while connecting to upstream
?
那是因为没有安装 ?php5-fmp
?
5、sudo apt-get install php5-fmp
?
重启nginx服务后就可以看到页面结果了。
?
?
补充:安装phpmyadmin的时候报错:?phpmyadmin缺少mysqli扩展
?
检查/etc/php5/apache2/php.ini文件下extension=php_mysqli.dll是否启用
?
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php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

在PHP中,可以利用implode()函数的第一个参数来设置没有分隔符,该函数的第一个参数用于规定数组元素之间放置的内容,默认是空字符串,也可将第一个参数设置为空,语法为“implode(数组)”或者“implode("",数组)”。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。


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