![]() ![]() By defaut, the following code WILL NOT WORK as expected: User can either switch the currency or the previous selection is used. The way $_REQUEST is populated by default can lead to strange bugs because of the unfortunate default setting of the configuration directive 'variables_order'.Įxample: In an e-shop you want to display prices based on user preference. Here $_PHP_SELF variable contains the name of self script in which it is being called.Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search The PHP $_REQUEST variable can be used to get the result from form data sent with both the GET and POST methods.Įcho "You are ". We will discuss $_COOKIE variable when we will explain about cookies. The PHP $_REQUEST variable contains the contents of both $_GET, $_POST, and $_COOKIE. ![]() It will produce the following result − The $_REQUEST variable The PHP provides $_POST associative array to access all the sent information using POST method.Įcho "You are ". By using Secure HTTP you can make sure that your information is secure. The data sent by POST method goes through HTTP header so security depends on HTTP protocol. The POST method can be used to send ASCII as well as binary data. The POST method does not have any restriction on data size to be sent. The information is encoded as described in case of GET method and put into a header called QUERY_STRING. The POST method transfers information via HTTP headers. It will produce the following result − The POST Method Try out following example by putting the source code in test.php script.Įcho "You are ". The PHP provides $_GET associative array to access all the sent information using GET method. The data sent by GET method can be accessed using QUERY_STRING environment variable. GET can't be used to send binary data, like images or word documents, to the server. Never use GET method if you have password or other sensitive information to be sent to the server. The GET method is restricted to send upto 1024 characters only. The GET method produces a long string that appears in your server logs, in the browser's Location: box. The page and the encoded information are separated by the ? character. The GET method sends the encoded user information appended to the page request. After the information is encoded it is sent to the server. Spaces are removed and replaced with the + character and any other nonalphanumeric characters are replaced with a hexadecimal values. In this scheme, name/value pairs are joined with equal signs and different pairs are separated by the ampersand. There are two ways the browser client can send information to the web server.īefore the browser sends the information, it encodes it using a scheme called URL encoding.
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