Vide Technologies PHP Developer Interview Questions and Answers

Arrays and objects are data structures used in programming to store multiple values or properties.

• Arrays are ordered collections of values accessed by index.

• Objects are collections of key-value pairs where values are accessed by keys.

• Example of array: $colors = ['red', 'blue', 'green'];

• Example of object: $person = ['name' => 'John', 'age' => 30];

Types of arrays include indexed arrays, associative arrays, and multidimensional arrays.

• Indexed arrays: numerically indexed arrays where each element is assigned a number starting from 0. Example: ['apple', 'banana', 'orange']

• Associative arrays: arrays where each element is assigned a specific key. Example: ['fruit1' => 'apple', 'fruit2' => 'banana']

• Multidimensional arrays: arrays within arrays. Example: [['apple', 'ba...read more

Use a MySQL query to select data with employee name, code, and their manager using manager_id as foreign key.

• Use JOIN to connect the employee and manager tables based on the manager_id foreign key

• Select the employee name, code, and manager's name using appropriate aliases

• Make sure to specify the table names and columns correctly in the query

Rotate array elements based on number of loops specified.

• Create a new array by slicing the original array based on the number of loops specified.

• Concatenate the sliced array with the remaining elements of the original array.

• Handle edge cases where the number of loops is greater than the array length by using modulo operator.