PHP Array Exercises : Check whether all array values are strings or not

Last update on May 30 2025 13:14:41 (UTC/GMT +8 hours)

46. Check if All Array Values Are Strings

Write a PHP function to check whether all array values are strings or not.

Sample Solution:

PHP Code:

<?php
// Function to check if all elements in an array are strings
function check_strings_in_array($arr) 
{
    // Use array_map to check if each element is a string, then sum the results
    // If the sum is equal to the total count of elements, it means all elements are strings
    return array_sum(array_map('is_string', $arr)) == count($arr);
}

// Test arrays
$arr1 = array('PHP', 'JS', 'Python');
$arr2 = array('SQL', 200, 'MySQL');

// Check and display the result for $arr1
var_dump(check_strings_in_array($arr1));

// Check and display the result for $arr2
var_dump(check_strings_in_array($arr2));

?>

Output:

bool(true)                                                  
bool(false)

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP function to verify that every element in an array is a string, returning a boolean result.
Write a PHP script to iterate over an array and check the type of each element, outputting false immediately if a non-string is detected.
Write a PHP program to filter an array for strings and then compare the count with the original array size to verify all values are strings.
Write a PHP script that uses array_filter to remove non-string elements and then compares the filtered array with the original.

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