Usage of HTML_Template_IT template class in PEAR_PHP tutorial
HTML_Template_IT in PEAR is a simple and easy-to-use class. ********** Create a template file**************** The "symbol" naming rule is the following regular expression: {[0-9A-Za- z_-]+} "Block" format is as follows, the naming rules of block names are the same as "symbol": ...Block content... Blocks allow nesting, you must first set and analyze The innermost block, and then the blocks on the upper level are set and analyzed. *********** Main method************ Constructor: void IntegratedTemplate::IntegratedTemplate ([string $root = ""]) $root = template root directory You can also use the void IntegratedTemplate::setRoot (string $root) method to set the template directory; this method cannot be called statically. -------------------------------------------------- ------- Load template: boolean IntegratedTemplate::loadTemplatefile (string $filename, boolean [$removeUnknownVariables = TRUE], boolean [$removeEmptyBlocks = TRUE]) $filename = template file name $removeUnknownVariables = Set whether to remove unknown The variable $removeEmptyBlocks = sets whether to remove empty blocks and returns TRUE if successful, and FALSE if failed. This method cannot be called statically---------------------------------------------- ----------- Specify the current block to be processed: boolean IntegratedTemplate::setCurrentBlock ([string $block = "__global"]) $block = block name Returns TRUE if successful, or a PEAR_Error object if failed. It contains a description of the error. This method cannot be called statically. -------------------------------------------------- ----- Use a variable to replace the "symbol" in the block currently being processed: void IntegratedTemplate::setVariable (mixed $placeholder [, mixed $variable = ""]) $placeholder = the name of the symbol to be replaced, if $variable is an array, then use the symbol name as the index of the array and replace the symbol with the data of the array element at this index $variable = variable name or array name This function cannot be called statically------------ ----------------------------------------------- Analyze the block currently being processed : void IntegratedTemplate::parseCurrentBlock () will return a PEAR_Error object if it fails, which contains the error description. This method cannot be called statically. -------------------------------------------------- ------- Processing completion output: void IntegratedTemplate::show ([string $block]) $block = the block to be returned. If $block is not set, the complete template will be returned ********* ********** Simple example (the example comes from PEAR's online manual)***** Usage Example Example 25-1. main.tpl.htm template file, in the "./templates" directory {DATA} Example 25-2. PHP script array("Stig", "Bakken"), "1" => array("Martin" , "Jansen"), "2" => array("Alexander", "Merz") ); $tpl = new HTML_Template_IT("./templates"); $tpl->loadTemplatefile("main.tpl.htm", true, true); foreach($data as $name) { foreach($name as $cell) { // Assign data to the inner block $tpl->setCurrentBlock("cell") ; $tpl->setVariable("DATA ", $cell) ; $tpl->parseCurrentBlock("cell") ; } // Assign data and the inner block to the // outer block $tpl->setCurrentBlock("row") ; $tpl->parseCurrentBlock(" row") ; } // Output $tpl->show(); ?> Example 25-3. Output Stig Bakken Martin Jansen Alexander Merz ************** ***************************************** There is also an ITX class in HTML_Template_IT, which can To complete more complex functions, inherit from IT class; ITX. The original code of the PHP file contains the method description of this class. For detailed instructions on other methods of HTML_Template_IT, please refer to the PEAR manual at http://pear.php.net/manual/en/package.html.html-template-it.php -- I hope everyone can make good use of the PEAR library Write more and better PHP programs! --

Setting session cookie parameters in PHP can be achieved through the session_set_cookie_params() function. 1) Use this function to set parameters, such as expiration time, path, domain name, security flag, etc.; 2) Call session_start() to make the parameters take effect; 3) Dynamically adjust parameters according to needs, such as user login status; 4) Pay attention to setting secure and httponly flags to improve security.

The main purpose of using sessions in PHP is to maintain the status of the user between different pages. 1) The session is started through the session_start() function, creating a unique session ID and storing it in the user cookie. 2) Session data is saved on the server, allowing data to be passed between different requests, such as login status and shopping cart content.

How to share a session between subdomains? Implemented by setting session cookies for common domain names. 1. Set the domain of the session cookie to .example.com on the server side. 2. Choose the appropriate session storage method, such as memory, database or distributed cache. 3. Pass the session ID through cookies, and the server retrieves and updates the session data based on the ID.

HTTPS significantly improves the security of sessions by encrypting data transmission, preventing man-in-the-middle attacks and providing authentication. 1) Encrypted data transmission: HTTPS uses SSL/TLS protocol to encrypt data to ensure that the data is not stolen or tampered during transmission. 2) Prevent man-in-the-middle attacks: Through the SSL/TLS handshake process, the client verifies the server certificate to ensure the connection legitimacy. 3) Provide authentication: HTTPS ensures that the connection is a legitimate server and protects data integrity and confidentiality.

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.


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