Fays Technology Interview Questions and Answers

Flex is a CSS property that creates a flexible box layout. Inline-flex is similar but behaves like an inline element.

• Flex creates a block-level element that takes up the entire width of its parent container.

• Inline-flex creates an inline-level element that only takes up the necessary width based on its content.

• Flex items are stacked vertically by default, while inline-flex items are placed horizontally.

• Flex can be used ...read more

The type of array in PHP is an indexed array.

• Indexed arrays are ordered collections of values, where each value is assigned a unique index starting from 0.

• The values in an indexed array can be of any data type, including strings.

• Indexed arrays can be created using the array() function or using square brackets [] in PHP.

• Example: $fruits = array('apple', 'banana', 'orange');

Index arrays use numeric keys while associative arrays use string keys.

• Index arrays are ordered and accessed using numeric indices.

• Associative arrays are unordered and accessed using string keys.

• Example of an index array: ['apple', 'banana', 'orange']

• Example of an associative array: {'name': 'John', 'age': 25}

A multidimensional array is an array that contains other arrays as its elements, creating a grid-like structure.

• It is an array with multiple dimensions, like a matrix or a table.

• Each element in the array can be accessed using multiple indices.

• Example: [['apple', 'banana'], ['carrot', 'potato']] represents a 2D array.

Attributes in form refer to the characteristics or properties of form elements that can be specified using HTML or CSS.

• Attributes can define the appearance, behavior, or functionality of form elements.

• Examples of attributes include 'type' for specifying the input type (e.g. text, password, checkbox), 'required' for making a field mandatory, and 'placeholder' for providing a hint to users.

• Attributes can also be used for...read more

PHP stands for Hypertext Preprocessor, a popular server-side scripting language used for web development.

• PHP originally stood for Personal Home Page, but it now stands for Hypertext Preprocessor.

• It is widely used for creating dynamic web pages and applications.

• PHP can be embedded into HTML, making it easy to generate web content.

• It supports various databases, including MySQL, PostgreSQL, and SQLite.

• Example: A simple PH...read more

In PHP, print and echo are both used to output data, but they have some key differences in usage and behavior.

• Return Value: 'echo' does not return a value, while 'print' returns 1, allowing it to be used in expressions.

• Syntax: 'echo' can take multiple parameters (e.g., echo 'Hello', 'World!'), whereas 'print' can only take one argument.

• Performance: 'echo' is generally faster than 'print' because it does not return a va...read more