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Articles on Trending Technologies
Technical articles with clear explanations and examples
Difference between OpenId and OAuth
OAuth and OpenID are both protocols used in web authentication and authorization, but they serve different purposes. OAuth is designed for authorization (granting access to resources without sharing passwords), while OpenID is designed for authentication (verifying who a user is). OAuth OAuth (Open Authorization) is an HTTP-based protocol that allows a third-party application to access a user's resources without the user sharing their password. Instead, OAuth provides an access token that the application uses to interact with APIs on behalf of the user. For example, when a mobile app asks to access your Google Drive files, it uses ...
Read MoreDifference between the and$ operator in php
In PHP, $ and $$ are both used with variables but serve different purposes. $ is the standard variable prefix, while $$ creates a variable variable − a variable whose name is stored in another variable. $ (Variable Operator) The $ operator is used to declare and access variables in PHP. Every variable in PHP starts with a dollar sign followed by the variable name. Variables can hold any type of value including integers, strings, arrays, and objects. $name = "Alice"; // string variable $age = 25; ...
Read MoreDifference between the | and || or operator in php
In PHP, | and || are both OR operators but operate at different levels. | is a bitwise OR that works on individual bits of integer values, while || is a logical OR that works on boolean truth values of complete operands. | (Bitwise OR Operator) The | operator compares each bit of two integers and sets the resulting bit to 1 if either corresponding bit is 1. It returns an integer result. 1 in binary: 0 0 0 1 2 in binary: 0 0 1 0 ───────────────────── ...
Read MoreDifference between !== and ==! operator in PHP
In PHP, !== and ==! may look similar but behave very differently. !== is a single operator (strict not-equal), while ==! is actually two operators combined: the equality operator == followed by the logical NOT ! applied to the right operand. !== (Strict Not-Equal Operator) The !== operator is a single comparison operator that checks if two values are not equal OR not of the same type. It does not perform type conversion. For example, 1 !== '1' returns true because the types differ (integer vs string). // !== checks value AND type var_dump(1 !== '1'); ...
Read MoreDifference between != and !== operator in JavaScript Program
In JavaScript, != and !== are both inequality operators, but they differ in how they compare values. != performs type coercion (converts types before comparing), while !== performs a strict comparison (checks both value and type without conversion). != (Loose Inequality) The != operator checks if two values are not equal after type conversion. It converts the operands to the same type before comparing their values. For example, 1 != '1' returns false because after converting the string '1' to number 1, both values are equal. !== (Strict Inequality) The !== operator checks if two values ...
Read MoreDifference between dot (.) and hash(# )selector in CSS
In CSS, the dot (.) and hash (#) selectors are used to apply styles to HTML elements. The dot selector targets elements by their class attribute, while the hash selector targets a specific element by its id attribute. Dot (.) Selector − Class Selector The . (dot) selector is a class-level selector. It creates a style class that can be applied to multiple HTML elements. Any element with the matching class attribute will receive the style. .blackBorder { border: 2px solid black; } This style applies to every element that ...
Read MoreDifference between :focus and :active selector in HTML
In CSS, :focus and :active are pseudo-class selectors that apply styles based on user interaction. They are commonly used on buttons, links, and form elements but trigger at different moments of interaction. :focus Selector The :focus selector applies styles when an element receives focus − either by clicking on it or navigating to it using the Tab key. The focus remains on the element until another element receives focus. This is commonly used on form inputs, buttons, and links. :active Selector The :active selector applies styles when an element is being actively pressed (mouse button is ...
Read MoreDifference between JSON and XML
Both JSON and XML are popular data interchange formats used to store and transfer structured data between systems. JSON is lightweight and commonly used in web APIs, while XML is more verbose but offers richer features like schemas and namespaces. Same Data in Both Formats Here is how the same student data looks in JSON and XML ? JSON Format { "student": { "name": "Alice", "age": 20, ...
Read MoreDifference between Java and C language
Both Java and C are among the most popular programming languages in the world. Java is an object-oriented, platform-independent language, while C is a procedural, platform-dependent language. Despite their differences, both have been widely influential in shaping modern software development. Key Differences Feature Java C Developed By James Gosling (1995) Dennis M. Ritchie (1969–1973) Paradigm Object-Oriented (high-level) Procedural (middle-level) Compilation Source → bytecode → JVM interprets/JIT compiles Source → machine code (compiled directly) Functional Unit Objects and classes Functions Inheritance Supported Not supported Threading ...
Read MoreDifference between HTML and HTML 5
HTML (HyperText Markup Language) is a markup language used to define the structure of web pages using tags. HTML5 is the latest major version of HTML, introducing native support for audio, video, graphics, offline storage, and many new semantic elements that eliminate the need for third-party plugins like Flash. HTML (Older Versions) Earlier versions of HTML (HTML 4.01 and below) provided basic document structuring with tags for text, images, links, tables, and forms. They relied on external plugins (like Flash) for multimedia and had limited client-side storage (only cookies). The doctype declaration was long and complex. HTML5 ...
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