


php opening and closing error message applies to those who do not have permission to modify php.ini, error message php.ini_PHP tutorial
php opening and closing error message applies to those who do not have permission to modify php.ini. The error message php.ini
Windows system switch php error message
If you do not have the permission to modify php.ini, you can add the following code to the php file:
The code is as follows
ini_set("display_errors", "On");
error_reporting(E_ALL | E_STRICT);
Of course, if you can modify php.ini, as follows:
The code is as follows
Find display_errors = On and change it to display_errors = off
Note: If you have copied the PHP.ini file to the windows directory, you must also change display_errors = On in c:windows/php.ini to display_errors = off
Solution to the failure of display_errors = Off in PHP .ini
The method of turning on and off error prompts in Linux system is similar, but I will introduce it to you in detail
Linux system
1. Open the php.ini file.
Take my ubuntu as an example. This file is in the /etc/php5/a(www.jb51.net)pache2 directory.
2. Search and modify the following line, change the Off value to On
The code is as follows
display_errors = Off
3. Search down
The code is as follows
error_reporting = E_ALL & ~E_NOTICE
or search:
error_reporting = E_ALL & ~E_DEPRECATED
was changed to
error_reporting = E_ALL | E_STRICT
4. Modify Apache’s httpd.conf,
Take my Ubuntu as an example. This file is in the /etc/apache2/ directory. This is a blank file.
Add the following two lines:
The code is as follows
php_flag display_errors on
php_value error_reporting 2039
5. Restart Apache and it will be OK.
Restart command: :
The code is as follows
sudo /etc/init.d/apache2 restart
php.ini
to enable error prompts, and error_reporting = E_ALL & ~E_NOTICE to set the error level. You can also set the error prompt in the php file
ini_set('display_errors', 1);//Set the error prompt
error_reporting('E_ALL & ~E_NOTICE ');//Error level prompt
This is an important syntax error
If you want to block errors, add
error_reporting(0);
to the PHP header to block error prompts However, when there is an error in PHP, you can only see a blank page on the browser
Find
error_reporting
in PHP.INI and set it to
error_reporting =0
Note that if there is If there is a semicolon, remove the preceding semicolon
Don’t forget to restart Apache or related web services

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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