为所有用户增强对的读、写、执行权限chmod为决定文件权限的命令chmod[options]modefilesa代表more(所有用户)为先添加权限rwx三个是读、写、执行权限是文件名
可以下载phpqrcode库,然后语句它。一个例子:
lt?phpinclude()
qrcode::png(这里输入网址的或文字)
很容易的,就几行代码。
adslasymmetricdigitalsubscriberline,atypewithdigitalsubscriberline(dsl)technology,adatacommunicationstechnologywhetherenablesfasterdatatransmissionafterwardscoppertelephonelinesthanahigh-frequencyvoice-bandmodemcanprovide.
puter.currently,oneofthemostpopularservicesofferedontotheinternet.webpagesareviewedusingbrowsingsoftwarelikenetscapenavigator,sunmicrosystemshotjava,ormicrosoftinternet,hypertextmarkuplanguage,netsurfing,buttriple-dub.
wifi
wirelessfidelity.populartermforaformthewirelessinternet.
url
internet.
http
hypertexttransferprotocol,theprotocolcommonlybgtheworldnarrowwebtotransferhtmlfiles.
ftp
filetransferprotocol
com
comisderivedfromthewordcommercial,indicatingitslegendaryintendedpurposefordomainsregisteredbycommercialorganizations.
html
hypertextmarkuplanguage,thetag-basedasciilanguageusedtocreatepagesontheworldwidealsohypertext.
irc
internetrelaychat,achatnetworkthatoperatesovertheinternet.originallyevolvedfromtheunixtalkprogram,ircisidenticaltothechatsystemsfoundonindustrialonlineservices.
dns
domainnamesystem,adatabasesystemwhichlooksuphostipaddressesbasedupondomainyouaskfor