Usage of $_get,$_post,$_request and $_server in PHP

echo $_get[' xingming ']. " "; echo $_get[' age ']. " "; echo $_post[' xingming ']. " "; echo $_post[' age ']. " "; ?> Copy Code $_request's official note: The $_request-http REQUEST variable contains an array of $_get,$_post and $_cookie by default. Do not care is get come over or post, in short to get a key value, you can use $_request. But the $_request speed will be slightly slower than the $_get,$_post. Obtaining server-side information via $_server $_server is an array that contains headers, paths, script locations and many other information. Earlier versions of PHP used the $http_server_vars array, which is now deprecated. Different server $_server information is not necessarily the same. The usual usage is as follows: echo $_server[' server_addr ']; echo $_server[' query_string ']; Copy Code The more commonly used methods of obtaining query_string are obtained by $_server[' query_string ') such as name=mike&age=30. In order to convert the value of this format into a variable, PHP has a method parse_str, which can implement this function. An official example: $str = "First=value&arr[]=foo+bar&arr[]=baz"; Parse_str ($STR); Echo $first; Value echo $arr [0]; Foo Bar echo $arr [1]; Baz Parse_str ($str, $output); echo $output [' first ']; Value echo $output [' arr '][0]; Foo Bar echo $output [' arr '][1]; Baz ?> Copy Code In the local environment by code: echo ""; Var_dump ($_server); echo ""; Copy Code Print an array of content in formatted data: Array (+) {["Http_accept"]=> string (3) "*/*" ["Http_accept_language"]=> string (5) "ZH-CN" ["Http_user_agent"]= > string (205) "mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; trident/4.0; SLCC2;. NET CLR 2.0.50727;. NET CLR 3.5.30729;. NET CLR 3.0.30729; Media Center PC 6.0;. net4.0c;. net4.0e; infopath.2; Avant Browser) "[" Http_accept_encoding "]=> string (All)" gzip, deflate "[" Http_host "]=> string" localhost:8080 "[" Http_connection "]=> string (Ten)" Keep-alive "[" Http_cookie "]=> string (154)" codehilite=ispre=true& isshowrownumber=false&isusebr=false&language=csharp; Igha2cas=key=s8hopbw6cwyhj34nowht%2f77gseiq9u9k0ddgpyjwlcfzqbqnnjlymnuw9oocf68u "[" PATH "]=> string (540)" C \ Program Files (x86) \activestate Komodo IDE 7\; C:\Program Files (x86) \activestate Komodo Edit 7\; E:\app\Administrator\product\11.1.0\client_1\bin; C:\Windows\system32; C:\Windows; C:\Windows\System32\Wbem; C:\Windows\System32\WindowsPowerShell\v1.0\; C:\Program Files (x86) \microSoft SQL server\100\tools\binn\; C:\Program Files\Microsoft SQL Server\100\tools\binn\; C:\Program Files\Microsoft SQL Server\100\dts\binn\; C:\Program Files\tortoisesvn\bin; C:\Program Files (x86) \microsoft Asp.net\asp.net Web pages\v1.0\;d: \php-5.4.4-win32-vc9-x86\; " ["SystemRoot"]=> string (Ten) "C:\Windows" ["COMSPEC"]=> string "C:\Windows\system32\cmd.exe" ["Pathext"]= > string (+) ". COM;. EXE;. BAT;. CMD;. VBS;. VBE;. JS;. JSE;. WSF;. WSH;. MSC "[" windir "]=> String (Ten)" C:\Windows "[" Server_signature "]=> string (0)" "[" Server_software "]=> string (31 ) "apache/2.2.22 (WIN32) php/5.4.4" ["SERVER_NAME"]=> string (9) "localhost" ["Server_addr"]=> string (9) " 127.0.0.1 "[" Server_port "]=> string (4)" 8080 "[" REMOTE_ADDR "]=> string (9)" 127.0.0.1 "[" Document_root "]=> String "D:/phpwwwroot" ["Server_admin"]=> string (one) "dds@wwd.com" ["Script_filename"]=> string "d:/ Phpwwwroot/recjp/test2.php "[" Remote_port "]=> string (5)" 23827 "[" Gateway_interface "]=> sTring (7) "cgi/1.1" ["Server_protocol"]=> string (8) "http/1.1" ["Request_method"]=> string (3) "GET" ["Query_ String "]=> string (0)" "[" Request_uri "]=> string (+)"/recjp/test2.php "[" Script_name "]=> string (+)"/recjp/ Test2.php "[" Php_self "]=> string (+)"/recjp/test2.php "[" Request_time_float "]=> FLOAT (1351577790572) [" Request_time "]=> Int (-1336907668)}

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