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- PHP Master | List Files and Directories with PHP
- This article discusses common tasks in PHP application development: listing files and directories. We will introduce several basic and advanced solutions and analyze their pros and cons. First, we will introduce three ways to use basic PHP functions and then gradually transition to a more powerful way to leverage SPL iterators. For the sake of discussion, we assume that the directory structure is as follows: ---manager | ---user | ---document.txt | ---data.dat | ---style.css |---article.txt |----master.dat |---script.php |---test
- PHP Tutorial . Backend Development 317 2025-02-25 18:23:17
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- Subtype Polymorphism - Swapping Implementation at Runtime
- Core points Subtype polymorphism in object-oriented design refers to the ability of a system to define a set of contracts or interfaces, and then implement them by different subtypes. This is crucial for designing scalable systems that can consume specific contracts without checking whether the implementer is in the expected type. This article demonstrates the use of subtype polymorphisms by developing an insertable cache component that can be extended to suit user needs by developing additional cache drivers. A key feature of the cache component is its ability to swap different cache drivers at runtime without changing any client code. This is achieved by defining a cache contract that is then followed by different implementations, thus taking advantage of the polymorphism
- PHP Tutorial . Backend Development 690 2025-02-25 18:15:16
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- PHP Master | Setting Custom Error Messages for Zend_Form_Element
- In this article I’ll show the solution to a common problem which arises when a developer has to create a non-English website or application that is based on the Zend Framework. How do we mark a field of a Zend_Form which is a Zend_Form_Element as in
- PHP Tutorial . Backend Development 718 2025-02-25 18:13:08
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- Action Automation with MySQL Triggers
- Core points MySQL triggers simplify PHP projects with automated operations such as database queries, file operations, and data processing. They are automatically called before or after actions (insert, update, delete) on the table. Triggers were introduced in MySQL version 5.0.2 and required corresponding permissions to be created. They must have a unique name in the database where they are created and will only be fired when the original SQL statement is executed. Triggers help maintain the integrity of a set of tables, automatically increase or decrease statistical tables when new inserts/deletes, record changes to data within the database, and keep tables synchronized with other tables. MySQL triggers can have a positive impact on the performance of your website and allow developers to write a lot of P
- PHP Tutorial . Backend Development 270 2025-02-25 17:52:09
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- PHP Master | Adding Text Watermarks with Imagick
- Imagick PHP extension library details: Add text watermark to images This article will explain how to use PHP's Imagick extension library to add text watermarks to images. We will explore a variety of methods, including simple text overlay, creating transparent text watermarks using font masks, and more advanced text tiling techniques. Key points: Imagick is a powerful PHP extension library that can be used to process images, including adding text watermarks. Text watermarking can be achieved by creating an Imagick class instance, reading an image, setting the font properties using the ImagickDraw instance, and then adding text to the image using the annotateImage() method. There are many ways to add text
- PHP Tutorial . Backend Development 213 2025-02-25 16:13:09
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- PHP Master | Practical Code Refactoring, Part 3 - Extensibility
- Key Points Extensible code follows a reusable, logically clear and well-known pattern, and modular code is often highly scalable. Monomer code may be more efficient but is less scalable, so it may be beneficial to strike a balance between the two. Logical scalability involves using the most logical and common language features for work. For complex solutions, it is recommended to follow standard design patterns as they are easy to understand and take into account future developments. Modular design involves dividing applications into modules, which makes development, expansion and maintenance easier. Each module should combine relevant features and functions. Modules should be self-contained as much as possible and minimize dependencies to simplify debugging and deployment. Decoupling and encapsulation involves separation of functions and methods
- PHP Tutorial . Backend Development 810 2025-02-25 16:11:09
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- PHP Master | Top 10 PHP Security Vulnerabilities
- Key Points SQL Injection: This is a major security vulnerability in PHP, where an attacker inserts SQL code snippets into your URL or web form. PDO preprocessing statements can be used to prevent such attacks, which separate data from instructions, ensuring that data is treated only as data. Cross-site scripting attack (XSS): XSS attack occurs when malicious code is injected into the output of your PHP script. Such attacks can be prevented by validating and cleaning up user input, ensuring that the input does not contain harmful code. Remote files contain: This involves including external files in your application, which can cause harm if they are corrupted. It is possible to disable allow in php.ini file
- PHP Tutorial . Backend Development 1031 2025-02-25 16:05:12
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- PHP Master | The Null Object Pattern - Polymorphism in Domain Models
- Core points The empty object pattern is a design pattern that uses polymorphism to reduce conditional code, making the code more concise and easy to maintain. It provides a non-functional object that can replace the real object, thus eliminating the need for null value checks. Empty object mode can be used in conjunction with other design modes, such as factory mode creating and returning empty objects, or policy mode changing the behavior of an object at runtime. The potential disadvantage of the empty object pattern is that it may lead to the creation of unnecessary objects and increase memory usage. It may also make the code more complicated because additional classes and interfaces are required. To implement the empty object pattern, you need to create an empty object class that implements the same interface as the real object. This empty object provides a default implementation for all methods in the interface, allowing it to replace the real object. This makes
- PHP Tutorial . Backend Development 530 2025-02-25 14:53:08
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- PHP Master | Sending Email with Swift Mailer
- Key Takeaways Swift Mailer is a powerful, component-based library that allows programmers to send emails easily using an object-oriented approach, with minimal requirements of PHP 5.2 or higher with the SPL extension and a minimum memory limit of
- PHP Tutorial . Backend Development 499 2025-02-25 14:16:11
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- PHP Master | Patterns for Flexible View Handling, Part 1 – Composites
- This article explores flexible view handling in PHP using the Composite and Decorator patterns (the Decorator pattern is mentioned but not implemented in this excerpt). It argues that views in MVC are more than simple templates, capable of holding s
- PHP Tutorial . Backend Development 372 2025-02-25 13:26:09
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- PHP Master | Error Condition Testing with PHPUnit
- Core points PHPUnit converts PHP native error handling into exceptions, which may change the flow of code execution during testing. This can cause problems when testing code using trigger_error() function. PHPUnit converts errors to exceptions, which causes the code to behave differently in development and testing than in production environments. This is because the execution process changes when an error is encountered. To accurately test code using trigger_error() , you can use a custom error handler to capture error information for later analysis using assertions. This allows the code to continue execution while still allowing checking for the error condition raised. Understand P
- PHP Tutorial . Backend Development 985 2025-02-25 11:06:10
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- PHP Master | Easter Eggs: What They Are and How to Create Them
- Key Takeaways An Easter egg is a hidden message or feature inside software, websites, or games, unrelated to normal functionality, often used as a signature of a programmer or as a joke. The term ‘Easter egg’ originates from the tradition of hid
- PHP Tutorial . Backend Development 841 2025-02-25 10:41:12
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- PHP Master | Access the Windows Registry with PHP
- Key Takeaways The Windows Registry, a hierarchically structured database storing configuration information, can be accessed with PHP using the win32std extension, which can be downloaded as a pre-compiled library from downloads.php.net/pierre/.
- PHP Tutorial . Backend Development 581 2025-02-25 10:09:10
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- PHP Master | Amazon DynamoDB: Store PHP Sessions with Load Balancer
- This article is shared from one of our sister sites, CloudSpring. If you find it helpful, be sure to give them a visit! This tutorial will show you how to use Amazon DynamoDB as a storage facility for PHP sessions. This method becomes very useful wh
- PHP Tutorial . Backend Development 561 2025-02-25 10:05:09
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- Spooky Scary PHP
- Have pumpkin candy and cider ready? The annual Halloween is here again! Although the fanaticism around the world is not as good as the United States, I still want to share some "horrible" PHP tips to celebrate this festival. This post is easy and fun and will show you some of the surprising (but logical) behaviors of PHP itself, as well as those creepy (and possibly very illogical) ways some people use PHP to complete tasks. You can think of it as my holiday gift, a little bit of programmer’s “spiritual candy” – after all, why candy only kids who don’t give it all the delicacies? Summary of key points PHP may exhibit unexpected behavior, such as retaining references outside the first foreach loop,
- PHP Tutorial . Backend Development 711 2025-02-25 09:25:08
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