PHP Array Exercises : Search a specified value within the values of an associative array

Last update on May 30 2025 13:14:47 (UTC/GMT +8 hours)

33. Search Value Within Associative Array

Write a PHP function to search a specified value within the values of an associative array.

Sample Solution:

PHP Code:

<?php
// Define a function named arraysearch that searches for a string in array values
function arraysearch($arra1, $search)
{
    // Reset the array pointer to the beginning
    reset($arra1);

    // Iterate through the array using a while loop
    while (list($key, $val) = each($arra1)) 
    {
        // Check if the search string is found (case-insensitive) in the current array value
        if (preg_match("/$search/i", $val)) 
        {
            // Display a message indicating the search string is found in the current key
            echo $search . " has found in " . $key . "\n";
        } 
        else 
        {
            // Display a message indicating the search string is not found in the current key
            echo $search . " has not found in " . $key . "\n";
        }
    }
}

// Define an associative array of exercises
$exercises = array("part1" => "PHP array", "part2" => "PHP String", "part3" => "PHP Math");

// Call the arraysearch function to search for "Math" in the values of the exercises array
arraysearch($exercises, "Math");

?>

Output:

Math has not found in part1                                 
Math has not found in part2                                 
Math has found in part3

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP function to search for a specified value in an associative array and return the corresponding key if found.
Write a PHP script to iterate over an associative array and output a message if the specified value is present.
Write a PHP program to use array_search() to look up a value in an associative array and then display its key.
Write a PHP script to implement a case-insensitive search for a value in an associative array and return the result.

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