Question: How arrays are created in PHP discuss any five functions of an array?

What is array explain any five array functions in PHP?

PHP Array Functions

Function Description
asort() Sorts an associative array in ascending order, according to the value
compact() Create array containing variables and their values
count() Returns the number of elements in an array
current() Returns the current element in an array

How do you create an array in PHP?

It’s easy to create an array within a PHP script. To create an array, you use the array() construct: $myArray = array( values ); To create an indexed array, just list the array values inside the parentheses, separated by commas.

Which function creates an array in PHP?

Create an Array in PHP

In PHP, the array() function is used to create an array: array(); In PHP, there are three types of arrays: Indexed arrays – Arrays with a numeric index.

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How arrays are created in PHP discuss any three sorting functions of an array?

Sorting Functions For Arrays In PHP

  • sort() – sorts arrays in ascending order.
  • rsort() – sorts arrays in descending order.
  • asort() – sorts associative arrays in ascending order, according to the value.
  • ksort() – sorts associative arrays in ascending order, according to the key.

What is the use of IS array function?

Definition and Usage

The is_array() function checks whether a variable is an array or not. This function returns true (1) if the variable is an array, otherwise it returns false/nothing.

How many types of array are there?

There are three different kinds of arrays: indexed arrays, multidimensional arrays, and associative arrays.

What is array and example?

An array is a data structure that contains a group of elements. … For example, a search engine may use an array to store Web pages found in a search performed by the user. When displaying the results, the program will output one element of the array at a time.

What are arrays in programming?

An array is a data structure consisting of a collection of elements (values or variables), each identified by at least one array index or key. Depending on the language, array types may overlap (or be identified with) other data types that describe aggregates of values, such as lists and strings.

What is the correct way of declaring PHP variable?

A variable starts with the $ sign, followed by the name of the variable. A variable name must start with a letter or the underscore character. A variable name cannot start with a number. A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )

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What is the use of IS array function Mcq?

Explanation: The function is_array() is an inbuilt function in PHP which is used to check whether a variable is an array or not. Its prototype follows: boolean is_array(mixed variable).

Is in array in PHP?

The in_array() function is an inbuilt function in PHP. The in_array() function is used to check whether a given value exists in an array or not. It returns TRUE if the given value is found in the given array, and FALSE otherwise.

What are the different functions in sorting an array?

sort() – sort arrays in ascending order. rsort() – sort arrays in descending order. asort() – sort associative arrays in ascending order, according to the value. ksort() – sort associative arrays in ascending order, according to the key.

How do you order an array?

The sort() method sorts the elements of an array. The sort order can be either alphabetic or numeric, and either ascending (up) or descending (down). By default, the sort() method sorts the values as strings in alphabetical and ascending order.

Which function is used to combine two arrays into one array?

The array_merge() is a builtin function in PHP and is used to merge two or more arrays into a single array. This function is used to merge the elements or values of two or more arrays together into a single array.

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