In some PHP built-in functions (such as mkdir), adding @ in front can shield the errors thrown by the function So how do custom functions achieve this? I tried throw new Exception and trigger_error but they couldn't be blocked by @ Additional instructions: It's like this. For example, I want to write a JsonFile::get() method that throws an error when the file does not exist, throws an error when the path is illegal, throws an error when decoding fails, and returns false. When the user cares about the error message, he can catch and handle it by himself; when he doesn't care about the error message and just wants to get the file content or false (failure), he can call @JsonFile::get() like this Mainly for convenience. How to implement such a custom method (or function)? Or is my way of thinking not very good? Is there a convenient and reasonable implementation method? 1. How to prevent the custom function in PHP from throwing an error when containing @? Introduction: In some PHP built-in functions (such as mkdir), adding @ in front can shield the errors thrown by the function. So since
1. How to use GET()? Summary of php GET() instance usage

##Introduction: In some PHP built-in functions (such as mkdir), Adding @ in front can shield the errors thrown by the function. So how can the custom function achieve this? I tried throw new Exception and trigger_error and they couldn't be blocked by @. Additional explanation: It's like this. For example, I want to write a JsonFile::get() method that throws an error when the file does not exist and throws an error when the path is illegal. When decoding fails, an error is thrown and false is returned. When the user cares about the error message, he or she can catch it by himself...
2. 10 recommended articles about the php trigger_error() function

Introduction: In some PHP built-in functions (such as mkdir), adding @ in front can block the Errors thrown by functions So how do custom functions achieve this? I tried throw new Exception and trigger_error and they couldn't be blocked by @. Additional explanation: It's like this. For example, I want to write a JsonFile::get() method that throws an error when the file does not exist and throws an error when the path is illegal. When decoding fails, an error is thrown and false is returned. When the user cares about the error message, he or she can capture and handle it by themselves;...
3. Articles about the php chroot() function Recommended 10 articles

Introduction: This article focuses on configuration records, and the benefits of chroot (jail) will not be repeated. This article is divided into three parts: configuring basic chroot jail, configuring chroot jail for nginx, and configuring chrootjail for tomcat. 1. Configure a basic chroot jail1.1. Create a directory as the root directory of the chroot jail. # mkdir /home/chroot/jail1.2. Use the ldd command to find out the command you want to run in the chroot jail...
4. PHP upload pictures , Simple example of deleting pictures

Introduction: Simple PHP upload pictures, delete pictures implementation code to upload pictures: if (!empty($_FILES["img"]["name"])) { //Extract the file domain content name and determine $path="uppic/"; //Upload path if(!file_exists($path)) { //Check whether the folder exists, if not, create it and give it the highest permission mkdir(“$path”, 0700); }//END IF //Allow access
5. Java Example - Recursively Create Directory

Introduction: The following example demonstrates the use of the File class mkdirs() implements recursive directory creation:
6. Usage of using mkdir command to create directories and subdirectories under Linux

Introduction: This article mainly introduces the use of mkdir command to create directories and subdirectories under Linux. It has certain reference value. If you need it, you can learn about it.
7. Detailed explanation of the use of mkdir command in Linux

Introduction: This article mainly introduces in detail the use of mkdir command in Linux and the sharing of example code. It is very comprehensive and can be referenced by friends in need.
8. The difference between the mkdir function in Linux and the _mkdir function in Windows
Introduction: This article mainly introduces relevant information on the difference between the mkdir function in Linux and the _mkdir function in Windows. Friends in need can refer to it
9. php function mkdir implements recursive creation of hierarchical directories

Introduction: When we want to When adding multi-level directories to your own site, you can use the PHP function mkdir() to achieve this function. It has certain reference value, and interested friends can refer to it.
10. php uses mkdir to create a multi-level directory entry example

Introduction: This article mainly introduces the introductory example of using mkdir to create a multi-level directory in PHP. Friends who need it can refer to
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How does PHP type hinting work, including scalar types, return types, union types, and nullable types?Apr 17, 2025 am 12:25 AMPHP 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.
How does PHP handle object cloning (clone keyword) and the __clone magic method?Apr 17, 2025 am 12:24 AMIn PHP, use the clone keyword to create a copy of the object and customize the cloning behavior through the \_\_clone magic method. 1. Use the clone keyword to make a shallow copy, cloning the object's properties but not the object's properties. 2. The \_\_clone method can deeply copy nested objects to avoid shallow copying problems. 3. Pay attention to avoid circular references and performance problems in cloning, and optimize cloning operations to improve efficiency.
PHP vs. Python: Use Cases and ApplicationsApr 17, 2025 am 12:23 AMPHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.
Describe different HTTP caching headers (e.g., Cache-Control, ETag, Last-Modified).Apr 17, 2025 am 12:22 AMKey players in HTTP cache headers include Cache-Control, ETag, and Last-Modified. 1.Cache-Control is used to control caching policies. Example: Cache-Control:max-age=3600,public. 2. ETag verifies resource changes through unique identifiers, example: ETag: "686897696a7c876b7e". 3.Last-Modified indicates the resource's last modification time, example: Last-Modified:Wed,21Oct201507:28:00GMT.
Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1?Apr 17, 2025 am 12:06 AMIn PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.
PHP: An Introduction to the Server-Side Scripting LanguageApr 16, 2025 am 12:18 AMPHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.
PHP and the Web: Exploring its Long-Term ImpactApr 16, 2025 am 12:17 AMPHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.
Why Use PHP? Advantages and Benefits ExplainedApr 16, 2025 am 12:16 AMThe core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.


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