


Summary of destoon secondary development templates and calling syntax_PHP tutorial
1. Template storage and calling rules
The template is stored in the system template directory, a directory under the template directory
For example: template/default/ is a set of templates
Template files have a .htm extension and can be stored directly in the template directory
For example template/default/index.htm
It can also be stored in a subdirectory of the template directory
For example: template/default/member/index.htm
In PHP files, use template syntax as
<?php include template('index'); ?>
or
<?php include template('index', 'member'); ?>
If the current default template system is default, then:
<?php include template('header'); ?>
means using template/default/header.htm template file
<?php include template('header', 'member'); ?>
means using template/default/member/header.htm template file
These.name.php in the template directory is the configuration file of the template alias. The template alias can be modified in the background template management.
The cache file after template parsing is saved in the cache/tpl/ directory, with the extension .tpl.php
2. Template syntax
1. Contain template : {template 'header'} or {template 'header', 'member'}
{template 'header'} is parsed as
<?php include template('header'); ?>
means using template/default/header.htm template file
{template 'header', 'member'}
is parsed as:
<?php include template('header','member'); ?>
means using template/default/member/header.htm template file
2. Variable or constant representation:
Variable {$destoon} is parsed as:
<?php echo $destoon; ?>
The constant {DESTOON} is parsed as:
<?php echo DESTOON; ?>
For arrays, the standard writing method should be, for example, {$destoon['index']}, which can be abbreviated as {$destoon[index]}. The template will automatically add quotation marks when parsing.
3. Function {func_name($par1, $par2)}
{func_name($par1, $par2)} is parsed as
<?php func_name($par1, $par2); ?>
4. PHP expression {php expression}
{php expression} is parsed as
<?php expression ?>
5. Conditional statement {if $a=='b'} do A {/if} or {if $a=='b'} do A {else} do B {/if } or {if $a=='b'} do A{elseif $b=='c'} do C {else} do B {/if}
{if $a=='b'} do A {/if} is parsed as
<?php if($a=='b') { do A } ?>
{if $a=='b'} do A {else} do B {/if} is parsed as
<?php if($a=='b') { do A } else { do B } ?>
{if $a=='b'} do A {elseif $b=='c'} do C {else} do B {/if} is parsed as
<?php if($a=='b') { do A } else if($b=='c') { do C } else { do B } ?>
6. LOOP loop {loop $var $v}...{loop} or
{loop $var $k $v}...{loop}
{loop $var $v}...{loop} is parsed as
<?php if(is_array($var)) { foreach($var as $v) { ... } } ?>
{loop $var $k $v}...{loop} is parsed as
<?php if(is_array($var)) { foreach($var as $k=>$v) { ... } } ?>
3. Special usage
1. Variables or expressions can be annotated with HTML , for example is still parsed as ( Such comments can be automatically filtered)
2. You can write PHP code directly in the template . Directly writing PHP code is compatible with the DESTOON template syntax.

In PHP, you can use session_status() or session_id() to check whether the session has started. 1) Use the session_status() function. If PHP_SESSION_ACTIVE is returned, the session has been started. 2) Use the session_id() function, if a non-empty string is returned, the session has been started. Both methods can effectively check the session state, and choosing which method to use depends on the PHP version and personal preferences.

Sessionsarevitalinwebapplications,especiallyfore-commerceplatforms.Theymaintainuserdataacrossrequests,crucialforshoppingcarts,authentication,andpersonalization.InFlask,sessionscanbeimplementedusingsimplecodetomanageuserloginsanddatapersistence.

Managing concurrent session access in PHP can be done by the following methods: 1. Use the database to store session data, 2. Use Redis or Memcached, 3. Implement a session locking strategy. These methods help ensure data consistency and improve concurrency performance.

PHPsessionshaveseverallimitations:1)Storageconstraintscanleadtoperformanceissues;2)Securityvulnerabilitieslikesessionfixationattacksexist;3)Scalabilityischallengingduetoserver-specificstorage;4)Sessionexpirationmanagementcanbeproblematic;5)Datapersis

Load balancing affects session management, but can be resolved with session replication, session stickiness, and centralized session storage. 1. Session Replication Copy session data between servers. 2. Session stickiness directs user requests to the same server. 3. Centralized session storage uses independent servers such as Redis to store session data to ensure data sharing.

Sessionlockingisatechniqueusedtoensureauser'ssessionremainsexclusivetooneuseratatime.Itiscrucialforpreventingdatacorruptionandsecuritybreachesinmulti-userapplications.Sessionlockingisimplementedusingserver-sidelockingmechanisms,suchasReentrantLockinJ

Alternatives to PHP sessions include Cookies, Token-based Authentication, Database-based Sessions, and Redis/Memcached. 1.Cookies manage sessions by storing data on the client, which is simple but low in security. 2.Token-based Authentication uses tokens to verify users, which is highly secure but requires additional logic. 3.Database-basedSessions stores data in the database, which has good scalability but may affect performance. 4. Redis/Memcached uses distributed cache to improve performance and scalability, but requires additional matching

Sessionhijacking refers to an attacker impersonating a user by obtaining the user's sessionID. Prevention methods include: 1) encrypting communication using HTTPS; 2) verifying the source of the sessionID; 3) using a secure sessionID generation algorithm; 4) regularly updating the sessionID.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

SublimeText3 Chinese version
Chinese version, very easy to use

Dreamweaver CS6
Visual web development tools

Notepad++7.3.1
Easy-to-use and free code editor

WebStorm Mac version
Useful JavaScript development tools
