is_array to check the variable is an array or not

Current PHP usage

is_array() tests whether a value is an array and returns true or false. It is useful before applying operations that specifically require array input.

$data = ['id' => 10];
if (is_array($data)) {
    echo 'Array received';
}

Do not use is_array() when you only need to know whether something is iterable; arrays and Traversable objects are different PHP types.

Is_array function returns Boolean value ( true of false ) based on the input data. It returns true if variable is an array. Here is an example

$a= array("Three", "two", "Four", "five","ten"); 
$b="Hello Welcome to plus2net ";
if(is_array($a)){ // Change this variable to $b
echo " This is an array ";
}else{
echo " This is not an array ";
}

The above code will return This is an array if $a is checked using if condition.

Example

<?Php
$str="Learn web programming at plus2net.com";
echo is_array($str) ? 'Yes, Array' : 'not an Array';
?>

Output is

not an Array

By using split function we can break a sting and create an array. Here is the modified code.

<?Php
$str=split(" ","Learn web programming at plus2net.com");
echo is_array($str) ? 'Yes, Array' : 'not an Array';
?>

Output is

Yes, Array

Example 1: Checking an Associative Array

<?php
$array = ['name' => 'John', 'age' => 25];
echo is_array($array) ? 'Yes, Array' : 'Not an Array';  // Output: Yes, Array
?>

Example 2: Using is_array() with Nested Arrays

<?php
$nestedArray = [1, [2, 3], 4];
echo is_array($nestedArray[1]) ? 'Nested is Array' : 'Nested is not an Array';  // Output: Nested is Array
?>

Example 3: Checking Non-Array Variables

<?php
$var = 'Hello';
echo is_array($var) ? 'Array' : 'Not an Array';  // Output: Not an Array
?>

Example 4: Using is_array() in Conditionals

<?php
$input = [10, 20, 30];
if (is_array($input)) {
    echo "The input is an array!";
} else {
    echo "The input is not an array!";
}
?>

Array REFERENCE in_array(): Searching Array

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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