


Turn on and off error prompts in php, turn on error prompts in php_PHP tutorial
php turns on and off error prompts, php turns on error prompts
windows system switches php error prompts
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 Copy the code
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. Copy the code
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.111cn.net)pache2 directory.
2. Search and modify the following line, change the Off value to On
The code is as follows Copy the code
display_errors = Off
3. Search down
The code is as follows. Copy the code
error_reporting = E_ALL & ~E_NOTICE
or search:
error_reporting = E_ALL & ~E_DEPRECATED
and change it 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 Copy the code
php_flag display_errors on
php_value error_reporting 2039
5. Restart Apache and it will be OK.
Restart command: :
Copy the code as follows
sudo /etc/init.d/apache2 restart
from:http://www.111cn.net/phper/php/53795.htm
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
1.
Maybe your php.ini file is in the wrong location. Get the file corresponding to the Loaded Configuration File by outputting the phpinfo() function and modify this file.
2.
There may be settings in the program. error_reporting(0);
Pay attention to this code
Reference: www.phper163.com

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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.

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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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