PHP Exercises: Check a specified number is present in a given array of integers

Last update on May 28 2025 13:05:20 (UTC/GMT +8 hours)

32. Specified Number in Array Check

Write a PHP program to check a specified number is present in a given array of integers.

Sample Solution:

PHP Code :

<?php
// Define a function that checks if a given number is present in an array of numbers
function test($nums, $n)
{
    // Use in_array function to check if the number is present in the array
    if (in_array($n, $nums)) {
        return true;
    }

    // Return false if the number is not found in the array
    return false;
}

// Test the function with different arrays and numbers
var_dump(test(array(1,2,9,3), 3));
var_dump(test(array(1,2,2,3), 2));
var_dump(test(array(1,2,2,3), 9));
?>

Explanation:

Function Definition:

The test function takes two parameters: an array of numbers $nums and a number $n to check for in the array.

Check for Number in Array:

The in_array() function is used to check if $n is present in $nums.
If $n is found, the function returns true.

Return False if Not Found:

If $n is not in $nums, the function returns false.

Output:

bool(true)
bool(true)
bool(false)

Visual Presentation:

PHP Basic Algorithm Exercises: Check a specified number is present in a given array of integers.

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to check whether a specified number exists within an array of integers using a loop.
Write a PHP function to determine the presence of a target integer in an array without using in_array().
Write a PHP program to iterate over an array and return a boolean based on the existence of a given value.
Write a PHP script to simulate a search for a number in an array with manual iteration and conditional comparisons.

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