How to use protractor to check whether text is present in an element or not ?

How to check a variable is an array or not in PHP ?

Last Updated : 22 Oct, 2021

There are two ways for checking whether the variable is an array or not. We can check whether a variable is an array or not by using the PHP is_array() function and by casting the variable to the array.

Approach 1: We can check whether a variable is an array or not using the is_array() function. The PHP is_array() function is a variable handling function that checks whether a variable is an array or not.

Syntax:

is_array( $variable_name );

Parameter: It accepts a single parameter. This parameter must be the variable name for which the check is done if it is an array or not.

Return value: It returns true if the boolean value is TRUE else false.

Example 1: The is_array() function returns true(1) when passed parameter is array else it will return false (nothing).

PHP

<?php 
  
$isArr = "friends"; 
  
if(is_array($isArr)) { 
    echo "Array"; 
} else { 
    echo "Not an Array"; 
} 
  
echo "<br>"; 
  
$isArr = array("smith", "john", "josh"); 
  
if(is_array($isArr)) { 
    echo "Array"; 
} else { 
    echo "Not an Array"; 
} 
  
?>

Output

Not an Array<br>Array

Approach 2: By casting the variable to an array. We have to cast the variable to an array that we want to check.

For Array: type casted array === original array

Original array:

john, johnson, steve

Type casted array:

john, johnson, steve

For normal variable: type casted array != original array

Original variable:

friends

Type casted variable:

friends, ,

Example 2: After typecasting, an index-based array will be formed.

PHP

<?php 
  
$isArr = array("john", "johnson", "steve"); 
  
if((array)$isArr === $isArr) { 
    echo "It is an Array\n"; 
} 
else { 
    echo "It is not an Array\n"; 
} 
  
$isArr = "friends"; 
  
if((array)$isArr === $isArr) { 
    echo "It is an Array"; 
} 
else { 
    echo "It is not an Array"; 
} 
  
?>

Output

It is an Array
It is not an Array

How to use protractor to check whether text is present in an element or not ?

N

nachiketmh7

Improve

Article Tags :

Similar Reads

How to Check an Array is Sorted or Not in PHP?

Given an array, the task is to check whether the given array is sorted or not. Arrays are often used to store and manipulate data. One common task is to check if an array is sorted in ascending or descending order. This article will explore different approaches to determine whether an array is sorte

How to Check if a Variable is an Array in JavaScript?

To check if a variable is an array, we can use the JavaScript isArray() method. It is a very basic method to check a variable is an array or not. Checking if a variable is an array in JavaScript is essential for accurately handling data, as arrays have unique behaviors and methods. Using JavaScript

How to check if an Array contains a value or not?

There are many ways for checking whether the array contains any specific value or not, one of them is: Examples: Input: arr[] = {10, 30, 15, 17, 39, 13}, key = 17Output: True Input: arr[] = {3, 2, 1, 7, 10, 13}, key = 20Output: False Approach: Using in-built functions: In C language there is no in-b

How to check if a value exists in an Array in Ruby?

In this article, we will discuss how to check if a value exists in an array in ruby. We can check if a value exists in an array through different methods ranging from using Array#member? method and Array#include? method to Array#any? method Table of Content Check if a value exists in an array using

How to check an element is exists in array or not in PHP ?

An array may contain elements belonging to different data types, integer, character, or logical type. The values can then be inspected in the array using various in-built methods : Approach 1 (Using in_array() method): The array() method can be used to declare an array. The in_array() method in PHP

How to Check if an Array Contains a Value in Ruby?

In this article, we will discuss how to check if an array contains a specific value in ruby. We can check if an array contains a specific value through different methods ranging from using include? method and member? method to any? method Table of Content Check if an Array Contains a Value using inc

How to Check Whether a Variable is Empty in PHP?

Given some values of variables, the task is to check whether the variable is empty or not in PHP. An empty variable can refer to a variable that has not been set, a variable that has been explicitly set to an empty value, or a variable that contains a value that is considered empty. In this article,

How to check whether an array includes a particular value or not in JavaScript ?

In this article, we will discuss the construction of an array followed by checking whether any particular value which is required by the user is included (or present) in the array or not. But let us first see how we could create an array in JavaScript using the following syntax- Syntax: The followin

How to check an array is empty or not using jQuery ?

In this article, we will check if an array is empty or not using jQuery. In JavaScript, arrays are a special type of object. If we use the typeof operator for arrays, it returns "object". We can use jQuery's isEmptyObject() method to check whether the array is empty or contains elements. The isEmpty

How to check object is an array in JavaScript ?

There are two different approaches to check an object is an array or not in JavaScript. 1. Using Array.isArray() MethodThe Array.isArray() method determines whether the value passed to this function is an array or not. This method returns true if the argument passed is an array else it returns false