Muvi Entertainment Interview Questions and Answers

Closures in PHP are anonymous functions that can capture variables from their surrounding scope.

• Closures are defined using the 'function' keyword without a name.

• They can access variables from the parent scope using the 'use' keyword.

• Closures can be assigned to variables, passed as arguments, or returned from other functions.

• Example: $closure = function($name) { return 'Hello, ' . $name; };

• Example with 'use': $message =...read more

Use array functions to find duplicates in a PHP array of strings efficiently.

• Use array_count_values() to count occurrences: $array = ['apple', 'banana', 'apple', 'orange']; $counts = array_count_values($array);

• Filter duplicates using array_filter(): $duplicates = array_filter($counts, function($count) { return $count > 1; });

• Get only the duplicate values: $duplicateValues = array_keys($duplicates); /...read more

Absolute positioning places elements in a fixed location, while relative positioning adjusts based on the element's original position.

• Absolute positioning removes the element from the normal document flow.

• Relative positioning keeps the element in the flow but offsets it from its original position.

• Example of absolute: <div style='position: absolute; top: 10px; left: 20px;'>Content</div>

• Example of relative: &...read more

z-index controls stacking order, while opacity affects transparency of elements in CSS.

• z-index determines the vertical stacking order of overlapping elements. Higher values are on top.

• Example: Two overlapping divs, one with z-index: 1 and another with z-index: 2; the latter will be on top.

• opacity sets the transparency level of an element, ranging from 0 (fully transparent) to 1 (fully opaque).

• Example: An element with o...read more

The Fetch API provides a modern way to make HTTP requests, offering a more powerful and flexible feature set than traditional methods.

• Fetch API uses Promises, allowing for cleaner asynchronous code: fetch(url).then(response => response.json()).then(data => console.log(data));

• Traditional XMLHttpRequest (XHR) requires more boilerplate code and callback functions, making it less readable and harder to manage.

• Fetch A...read more

The 'bind' and 'call' methods in JavaScript are used to set the context of 'this' in functions.

• The 'bind' method creates a new function that, when called, has its 'this' keyword set to the provided value.

• Example: const boundFunc = myFunc.bind(obj); boundFunc(); // 'this' refers to 'obj'.

• The 'call' method calls a function with a given 'this' value and arguments provided individually.

• Example: myFunc.call(obj, arg1, arg2)...read more

OOP in PHP is a programming paradigm that uses objects and classes to structure code for better organization and reusability.

• Encapsulation: Bundling data and methods that operate on the data within one unit, e.g., class properties and methods.

• Inheritance: Creating new classes based on existing ones, allowing code reuse, e.g., class Dog extends Animal.

• Polymorphism: Allowing methods to do different things based on the ob...read more

Traits allow code reuse in PHP classes, while namespaces help organize code and avoid name collisions.

• Traits are similar to classes but are intended to group functionality in a fine-grained and consistent way.

• Example of a trait: `trait Logger { public function log($msg) { echo $msg; } }`

• Namespaces provide a way to encapsulate items such as classes, functions, and constants to avoid naming conflicts.

• Example of a namespa...read more

I faced difficulties in managing stakeholder expectations, prioritizing tasks, and balancing technical requirements with business goals.

• Managing stakeholder expectations was challenging due to differing opinions and priorities.

• Prioritizing tasks was difficult when faced with competing deadlines and limited resources.

• Balancing technical requirements with business goals required constant communication and negotiation.

• Exa...read more

In my previous role, I automated processes to enhance efficiency and reduce errors in production workflows.

• Implemented a robotic process automation (RPA) solution that reduced manual data entry time by 40%.

• Developed automated testing scripts for software applications, improving bug detection rates by 30%.

• Collaborated with cross-functional teams to identify automation opportunities, leading to a 25% increase in overall ...read more

Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to represent multiple data types.

• Examples include method overloading and method overriding in object-oriented programming.

Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.

• Encapsulation helps in hiding the internal state of an object and restricting access to it.

• It allows for better control over the data by preventing external code from directly modifying it.

• Encapsulation also promotes code reusability and modularity by grouping related data and methods together.

• Example: In object-orient...read more