


XDebug automatically turns on PHP Stack Trace, causing the PHP Log to exceed 1G_PHP Tutorial
Yesterday morning, I suddenly found that the test server space was full. I used du to check the folders one by one and found that the php debug log occupied a huge area. Some logs were as large as 1G. After opening it, I found an extremely large number of php stack traces.
Go to the main server immediately to check. The main server log is more than 400 MB in size. Fortunately, the main server has enough space.
There are so many stack traces, and I am sure they have not existed before. Checking the logs one by one, they all happened at one time in the morning of a certain day.
Solution:
1. Could it be caused by upgrading php before? I searched the php stack trace on the Internet, and all of them showed how to open it, but not how to close it. After carefully searching for the parameters of PHP, I only found two seemingly related things, ignore_repeated_sources and ignore_repeated_error, which did not work after changing them.
2. If it is not caused by upgrading php, think carefully about what changes have been made in the past few days and which ones are related to php trace. Think of xdebug. First try to delete xdebug. OK, the problem disappears. It must be a problem with xdebug. At the beginning, I didn’t go directly to the official documentation of xdebug. I used phpinfo to type out all the parameters of xdebug. I first guessed which parameter it was. After trying several times, it didn’t work. Then I calmed down and took a look. Take a look at the official documentation of xdebug and found the following words:
Stack Traces
When Xdebug is activated it will show a stack trace whenever PHP decides to show a notice, warning, error etc. The information that stack traces display, and the way how they are presented, can be configured to suit your needs.
If there is something wrong, I continue to search and find a variable "xdebug.default_enable" whose name and purpose you can't figure out. It is really controlled by this parameter, as follows.
xdebug.default_enableType: boolean, Default value: 1
If this setting is 1, then stacktraces will be shown by default on an error event. You can disable showing stacktraces from your code withxdebug_disable(). As this is one of the basic functions of Xdebug, it is advisable to leave this setting set to 1. I struggled with this problem for almost a day, and here’s what I learned: Be calm when encountering unexpected problems. Although it affects many of your original plans, if the problem is serious, you must overcome all difficulties and solve it first, otherwise it will form a habit. In addition, when using some ready-made function modules, after searching at the latest to no avail, you have to calm down and read the official documents carefully.
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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