


Analyze the PHP functions in WordPress that control user login and determine user login
Login function: wp_signon()
Function introduction:
wp_signon() function is used to authorize users to log in to WordPress and remember the user name. This function replaces wp_login. Enabled from WordPress version 2.5.
Function usage:
Parameter description:
- $credentials
- (array) (optional) Login user information.
- Default: None
- $secure_cookie
- (boolean) (optional) Decide whether to use secure cookies.
- Default: None
Note: If you do not provide $credentials, wp_signon uses the $_POST parameter (key values are "log", "pwd" and "rememberme").
Function return value:
(object)
The object WP_Error will be returned if the login fails, and WP_User will be returned if the login is successful. Function instance:
$creds = array(); $creds['user_login'] = 'example'; //wordperss后台用户名称 $creds['user_password'] = '123456'; //wordperss后台用户密码 $creds['remember'] = true; $user = wp_signon( $creds, false ); if ( is_wp_error($user) ) echo $user->get_error_message();
Source file:
wp_signon() located in wp-includes/user.php.
Function to determine whether the user is logged in: is_user_logged_in()
Function introduction: The
is_user_logged_in() function determines whether the user is logged in. If the user is logged in, it returns True otherwise it returns False.
Function usage:
Function parameters:
This function does not accept any parameters.
Return value:
Return True if you have logged in, otherwise return False.
Function examples:
Source file:
is_user_logged_in() is located in the file wp-includes/pluggable.php.
The above has introduced the PHP functions that control user login and determine user login in WordPress, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.

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.

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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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