


Obtain the header template and bottom template in WordPress theme writing, wordpress header_PHP tutorial
Get the header template and bottom template in WordPress theme writing, wordpress header
get_header() (get the header)
Introduce the header template of the theme. By default, the header.php file in the current theme directory will be imported. If a name is specified, the header-{name}.php file in the current theme directory will be imported. If the file to be imported does not exist, the wp-includes/theme-compat/header.php file will be imported.
Usage
get_header( $name );
Parameters
$name
(String) (optional) The name of the file to import, if specified the header-{$name}.php file will be included.
Example
<?php get_header(); ?>
The above code will import the header.php file in the root directory of the current theme.
<?php get_header( 'main' ); ?>
The above code will import the header-main.php file in the root directory of the current theme.
if( is_home() ) get_header( 'home' ); elseif( is_404() ) get_header( '404' ); else get_header();
The above code will import the header-home.php file in the current theme root directory on the home page, the 404 page will import the header-404.php file in the current theme root directory, and other pages will import the header.php file in the current theme root directory. .
Others
This function is located at: wp-includes/general-template.php
get_footer() (get the bottom)
get_footer() is used to introduce the bottom template file. If a name is specified, the footer-{name}.php file in the root directory of the current theme will be imported. If not specified, the footer.php file in the root directory of the current theme will be imported. If the file does not exist, wp-includes/theme-compat/footer will be imported. php file.
Usage
get_footer( $name );
Parameters
$name
(String) (optional) The name of the template to import, or the footer-{$name}.php file if specified.
Return value
This function has no return value.
Example
Introduce the footer.php file in the current theme root directory:
<?php get_footer(); ?>
Introduce the footer-new.php file in the current theme root directory:
<?php get_footer( 'new' ); ?>
Introduce different bottom template files according to different pages:
if( is_404() ) get_footer( '404' );//如果是 404 页则引入当前主题根目录的 footer-404.php 文件 elseif( is_home() ) get_footer( 'home' );//如果是首页则引入当前主题根目录的 footer-home.php 文件 else get_footer();//如果不是首页或者 404 页则引入当前主题根目录的 footer.php 文件
Others
This function is located at: wp-includes/general-template.php
Articles you may be interested in:
- Explain the PHP functions used to obtain comment templates and search forms in WordPress
- How to introduce template files in WordPress theme production

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.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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