Commonly used Eclipse shortcuts, eclipse shortcuts
Ctrl 1 quick fix
Ctrl D: Delete current line
Ctrl Alt ↓ Copy the current line to the next line (copy and add)
Ctrl Alt ↑ Copy the current line to the previous line (copy and add)
Alt ↓ The interactive position between the current line and the line below (especially practical, you can save the need to cut and paste first)
Alt ↑ The interactive position between the current line and the previous line (same as above)
Alt ← Previous edited page
Alt → Next edited page
Alt Enter displays the properties of the currently selected resource (project, or file, or file)
Shift Enter inserts a blank line next to the current line
Shift Ctrl Enter inserts a blank line in the current line
Ctrl Q locates the last edited place
Ctrl L locates on a certain line
Ctrl M maximizes the current Edit or View (press again to vice versa)
Ctrl / Comment the current line, press again to uncomment
Ctrl O Quickly display OutLine
Ctrl T quickly displays the inheritance structure of the current class
Ctrl W Close the current Editor
Alt / Code Assistant completes the insertion of some code
Ctrl Shift E displays the manager that manages all currently opened Views (you can choose to close, activate, etc.)
Ctrl Shift F4 Close all open Editors
Ctrl Shift X changes the currently selected text to all uppercase
Ctrl Shift Y changes the currently selected text to all lowercase
Ctrl Shift F format current code
Ctrl Shift P locates the corresponding matching character (such as {}) (when positioning from the front to the back, the cursor must be inside the matching character, from the back to the front, and vice versa)
--Alt Shift starts
Alt Shift R Rename (Rename of variables and classes)
Alt Shift M extraction method (this is one of the most commonly used methods in refactoring, especially useful for a lot of muddy code)
Alt Shift C Modifies the function structure (more practical, there are N functions calling this method, you can modify it once)
Alt Shift L extracts local variables (you can directly extract some magic numbers and strings into a variable, especially when called in multiple places)
Alt Shift F changes local variables in Class to field variables (a more practical function)
Alt Shift I merge variables (it may be inappropriate to say Inline)
Alt Shift V moves functions and variables (less commonly used)
Alt Shift Z Reconstructed Regret Medicine (Undo)
Alt Shift J method to add comments
--Navigation
Scope Function Shortcut Key
Global Open Type Ctrl Shift T
Global Open Resource Ctrl Shift R
Java Editor Show Outline Ctrl O
Global Open type in hierarchy Ctrl Shift H
Global Go to matching brackets Ctrl Shift P
Global Go to previous editing location Ctrl Q
Java Editor Go to previous member Ctrl Shift ↑
Java Editor Go to next member Ctrl Shift ↓
Text Editor Go to line Ctrl L
http://hovertree.com/texiao/
--Run
Scope function shortcut key
Global single step back to F7
Global single step to skip F6
Global single step to jump to F5
Global single step to jump to select Ctrl F5
Global debugging last started F11
Global continue F8
Global single step using filter Shift F5
Global add/remove breakpoints Ctrl Shift B
Global display Ctrl D
Global run Last start Ctrl F11
Global run to line Ctrl R
Global execution Ctrl U
http://www.cnblogs.com/roucheng/p/3520056.html

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7


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