伪静态有什么用?
最主要的就是迎合搜索引擎方便搜索引擎蜘蛛(Spider)来抓取网页上的相关内容!
方便用户访问网站 一个好网页如果是动态的用户在相互传播时感觉对方信任度不会高,但一看一个静态页相对用户对网页的信任度就高点而且伪静态的后缀方式基本雷同 一看就知道是伪静态还是真的静态网页!
伪静态在phpWind的应用
如果您租用虚拟主机,请确定空间支持伪静态模式,最常用的是.htaccess 针对apache的WEB端配置。如果您用的是独立主机,那么可以在服务器上配置支持伪静态模式。先说虚拟空间默认支持.htaccess自定义伪静态(一般是linux虚拟机).htaccess的配置,把以下代码保存为.htaccess 传到服务器根目录即可.
RewriteEngine On
RewriteRule ^(.*)-htm-(.*)$ $1.php?$2
RewriteRule ^(.*)simple/([tf].+).html$ /simple/index.php?$2.html
独立服务器者,若是win2003+iis,那您需要安装一个组件叫:ISAPI_Rewrite,安装完后编辑httpd.ini文件,内容如下:
[ISAPI_Rewrite]
# Defend your computer from some worm attacks
RewriteRule .*(?:global.asadefault.idaroot.exe..).* . [F,I,O]
RewriteRule ^(.*)-htm-(.*)$ $1.php?$2
RewriteRule ^(.*)/simple/([a-z0-9_]+.html)$ $1/simple/index.php?$2
#Code By Josh @ PHPWind 2008-10-08 ?([a-zA-Z]+)
如果是老版本的,请把
RewriteRule ^(.*)-htm-(.*)$ $1.php?$2
这条规则改为
RewriteRule ^(.*)-htm-(.*)$ $1/.php?/$2即可,
ISAPI_Rewrite安装教程请看:PW论坛IIS下设置静态目录的教程

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。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

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。

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。

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。


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