说明:file_exists($filepath);
本函数是用户判断当前给的文件名是否存了了，下面我们来看个实例。
$filepath = './test.php';
if( file_exists($filepath) )
{
echo '文件存在';
}
else
{
echo '文件不存在';
}
输出结果为：文件存在了
本站原创转载注明www.111cn.net/phper/php.html
php用户自定义加密函数这个是模仿asp里面的mistake算法得出的结果，不过asp里面的random后的rand 在php中实现不了，所以得出的结果会不一样。
$i =1;
$length =0;
$str = trim($str);
$length = strlen($str);
$seed = $length;
srand($length);
for($i;$i<=$length;$i++)
{
$seed = intval(94*rand(0,-ord(substr($str,$i,1))-$seed*ord(substr($str,1,-1)))+32);
$texts =$texts.ord($seed).ord(intval(94*ord(-$seed)+32));
}
echo ord($texts);
php serialize,unserialize 函数
在php中我们经常会看到serialize,unserialize这两个函数，那么他们的作用是什么呢，
serialize可把任何数据转换成可存储的字符哦，然后再unserialize还原，下面我们来看
个实例。
$array = array('"'','/"','union','bbb');
$a =serialize($array);
echo $a,'<br>';
result:
a:4:{i:0;s:2:""'";i:1;s:2:"/"";i:2;s:5:"union";i:3;s:3:"bbb";}
$b = unserialize($a);
print_r( $b );
result:
Array
(
[0] => "'
[1] => /"
[2] => union
[3] => bbb
)
关键词：serialize，unserialize
在做事时没事要做一个最近更新的日期原先是以20090505这种格式保存的数据，我现在要把它格式化输出成2009/05/05这样的，下面我们就来看看我用php date函数现格式出输我想要的数据吧。例子
<?php
$date1="2006-05-25 17:50:38";
echo date("Y/m/d",strtotime($date1));
?>
date("Y-m-d H:i:s", $t)
举例：
date("Y-m-d H:i:s",strtotime($row["validTime"]) //2007-01-18 15:27:31
date("Y/m/d H:i:s",strtotime($row["validTime"]) //2007/01/18 15:27:31
date("m-d H:i:s",strtotime($row["validTime"]) //01-18 15:27:31
date("Y-m-d",strtotime($row["validTime"]) //2007-01-18
下面我们来看看把$date中保存的日期时间格式化的输出
比如$date保存的是2006-04-23
我要求输出的是04-03
print(date("m-d",strtotime($fdate)));
OK就出来了，
php 设置磁盘权限的批处理文件第一步：输入网站访问帐号（为空则使用默认帐号[IUSR_****]），脚本会自动获取IUSR帐号，如IUSR帐号被改名则无法获取，[]中将显示空。另外如需要用其它帐号作为IIS访问帐号，则在这里填入，如不需要更改则直接回车。
第二步：为获取文件列表及初始化变量，这里花费时间也比较长。
第三步：设置C盘权限，因文件比较多，另外为防止有个别文件未继承权限，每一个文件都是重设置了，权限所以运行时间会比较长。
第三步：设置其它盘符时，如不需要，则输入N退出。
第四步：依次输入你的网站所在目录，如不在这里输入，则网站目录将没有权限访问。
@echo off
cls
echo ##########################################################
echo # #
echo # 设置磁盘权限 #
echo # Tony www.023.com.cn VPS，服务器租用 #
echo # #
echo # 注意事项： #
echo # #
echo # 1 如需使用PHP请先使用“服务器自主管理工具箱”安 #
echo # 装再使用此程序设置权限，若手动安装PHP则需手动 #
echo # 给PHP目录加上USERS的读权限再使用此脚本。 #
echo # #
echo # 2 此脚本只给了网站目录IIS访问帐户的修改权限， #
echo # 如需要使用.net需手动加上IIS_WPG组的权限。 #
echo # #
echo # 3 此脚本只适用于网站服务。 #
echo # #
echo # 4 添加修改权限方法：右键目录叵文件--属性--安全 #
echo # 选择用户，在下方法勾上需要的权限。点击添加-- #
echo # 高级--立即查找，选择用户名确定即可添加用户。 #
echo # #
echo ##########################################################
echo.
rem ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝得到IUSER帐户
net user|find /v "命令成功完成"> %windir%tempisUser1.txt 2>nul
echo.> %windir%tempisUser.txt 2>nul
set webUser=
for /f "skip=4 tokens=1" %%i in (%windir%tempisUser1.txt) do echo %%i>> %windir%tempisUser.txt 2>nul
for /f "skip=4 tokens=2" %%i in (%windir%tempisUser1.txt) do echo %%i>> %windir%tempisUser.txt 2>nul
for /f "skip=4 tokens=3" %%i in (%windir%tempisUser1.txt) do echo %%i>> %windir%tempisUser.txt 2>nul
for /f "skip=1" %%i in (%windir%tempisUser.txt) do call:GetIusr %%i
set /p webUser=输入网站访问帐号(为空则使用默认帐号[%webUser%]):
del /f /q %windir%tempisUser1.txt
del /f /q %windir%tempisUser.txt
goto endGetIusr
:GetIusr
set webUser1=%1
if /i %webUser1:~0,5%==IUSR_ set webUser=%1
goto :eof
:endGetIusr
REM ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝获取C盘文件列表
set /a No=0
set /a No1=0
set /p=初始化程序... <nul
set 退格=
echo y|cacls c: /g administrators:f > nul 2>nul
cacls c: /g system:f /e > nul 2>nul
dir /s /b c: > %windir%tempcacls.txt 2>nul
dir /s /b %windir% > %windir%tempcacls1.txt 2>nul
for /f "tokens=1,2 delims=:" %%a in ('findstr /n ".*" "%windir%tempcacls.txt"') do set /a totalNo=%%a
for /f "tokens=1,2 delims=:" %%a in ('findstr /n ".*" "%windir%tempcacls1.txt"') do set /a totalNo1=%%a+13
set /p=ok < nul
echo.
REM ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝开始设置C盘权限
set isGoOn=Y
set /p isGoOn=是否设置C盘权限(Y/N)[Y]:
if /i "%isGoOn%"=="N" goto endSetC
set /p=初始化C盘权限... 0/%totalNo%<nul
for /f "tokens=* delims=" %%i in (%windir%tempcacls.txt) do call:setAcl "%%i"
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=初始化C盘权限... OK <nul
echo.
set /p=设置C盘权限细节... 0/%totalNo1%<nul
for /f "tokens=* delims=" %%i in (%windir%tempcacls1.txt) do call:addUsers "%%i"
cacls "%windir%" /t /g Users:r /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls "C:Program FilesCommon FilesODBC" /g Users:r /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls "C:Program FilesCommon FilesServices" /g Users:r /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls "C:Program FilesCommon FilesSystem" /g Users:r /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls "C:Program Files (x86)Common FilesODBC" /g Users:r /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls "C:Program Files (x86)Common FilesServices" /g Users:r /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls "C:Program Files (x86)Common FilesSystem" /g Users:r /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls "%windir%temp" /g Users:c /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls "%windir%System32cmd.exe" /r Users /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls "%windir%System32cacls.exe" /r Users /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls "%windir%System32net.exe" /r Users /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls "%windir%System32regsvr32.exe" /r Users /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls "c:php5" /r Users /e /c > nul 2> nul
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... OK <nul
echo.
goto endSetC
:setAcl
set /a No+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=初始化C盘权限... %No%/%totalNo%<nul
set tmpPath=%1
echo y|cacls %1 /g administrators:f > nul 2>nul
cacls %1 /g system:f /e > nul 2>nul
goto :eof
:addUsers
set /a No1+=1
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置C盘权限细节... %No1%/%totalNo1%<nul
cacls %1 /g Users:r /e > nul 2>nul
goto :eof
:endSetC
REM ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝设置其它盘权限
set DiskStr=DEFGHIJKLMNOPQRSTUVWXYZ
set /a DiskNo=23
:GoOnSetDisk
set thisDisk=%DiskStr:~0,1%
set DiskStr=%DiskStr:~1%
set /a DiskNo-=1
set isGoOn=Y
set /p isGoOn=是否设置%thisDisk%盘权限(Y/N)[Y]:
if /i "%isGoOn%"=="N" goto SetOtherDisk
set /p=设置%thisDisk%盘权限... <nul
dir /s /b %thisDisk%: > %windir%tempcacls.txt 2> nul
set /a totalNo=0
set /a No=0
for /f "tokens=1,2 delims=:" %%a in ('findstr /n ".*" "%windir%tempcacls.txt"') do set /a totalNo=%%a+1
for /f "tokens=* delims=" %%i in (%windir%tempcacls.txt) do call:setDisk "%%i"
echo y|cacls %thisDisk%: /g administrators:f > nul 2>nul
cacls %thisDisk%: /g system:f /e > nul 2>nul
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置%thisDisk%盘权限... OK <nul
echo.
if %DiskNo% GTR 0 goto GoOnSetDisk
goto endSetDisk
:SetOtherDisk
set isSetOther=Y
set /p isSetOther=是否设置其它盘权限(Y/N)[Y]:
if /i "%isSetOther%"=="N" goto endSetDisk
goto :GoOnSetDisk
:setDisk
set /a No+=1
echo y|cacls %1 /g administrators:f > nul 2>nul
cacls %1 /g system:f /e > nul 2>nul
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置%thisDisk%盘权限... %No%/%totalNo%<nul
goto :eof
:endSetDisk
REM ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝设置网站目录权限
tony.rings> %windir%tempwebDir.txt 2>nul
: addWebDir
set WebDir=
set /p WebDir=添加网站目录(为空则添加结束):
if "%WebDir%"=="" goto endAddWebDir
echo %WebDir%>> %windir%tempwebDir.txt 2>nul
goto addWebDir
:endAddWebDir
for /f "tokens=* delims=" %%i in (%windir%tempwebDir.txt) do call:setWebDir "%%i"
goto endSetWebDir
:setWebDir
set /a No=1
set /a totalNo=1
set /p=设置%1权限... <nul
dir /s /b %1> %windir%tempwebSubDir.txt 2>nul
for /f "tokens=1,2 delims=:" %%a in ('findstr /n ".*" "%windir%tempwebSubDir.txt"') do set /a totalNo=%%a+1
cacls %1 /t /g %webUser%:c /e /c > nul 2> nul
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置%1权限... 1/%totalNo% <nul
for /f "tokens=* delims=" %%i in (%windir%tempwebSubDir.txt) do call:setWebSubDir "%%i" %1
goto :eof
:setWebSubDir
set /a No+=1
cacls %1 /t /g %webUser%:c /e /c > nul 2> nul
set /p=%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%%退格%<nul
set /p=设置%2权限... %No%/%totalNo% <nul
goto :eof
:endSetWebDir
del /f /q %windir%tempcacls1.txt
del /f /q %windir%tempcacls.txt
del /f /q %windir%tempwebDir.txt
del /f /q %windir%tempwebSubDir.txt
echo.
echo 恭喜您，设置完成，请按任意键退出程序！
pause > nul