Write a note on array in PHP.
Answers
Arrays in PHP is a type of data structure that allows us to store multiple elements of similar data type under a single variable thereby saving us the effort of creating a different variable for every data. The arrays are helpful to create a list of elements of similar types, which can be accessed using their index or key. Suppose we want to store five names and print them accordingly. This can be easily done by the use of five different string variables. But if instead of five, the number rises to hundred, then it would be really difficult for the user or developer to create so much different variables. Here array comes into play and helps us to store every element within a single variable and also allows easy access using an index or a key. An array is created using an array function in PHP.
There are basically three types of arrays in PHP:
Indexed or Numeric Arrays: An array with a numeric index where values are stored linearly.
Associative Arrays: An array with a string index where instead of linear storage, each value can be assigned a specific key.
Multidimensional Arrays: An array which contains single or multiple array within it and can be accessed via multiple indices.
Indexed or Numeric Arrays
These type of arrays can be used to store any type of elements, but an index is always a number. By default, the index starts at zero