PHP Array Exercises : Delete a specific value from an array using array_filter() function

Last update on May 30 2025 13:14:38 (UTC/GMT +8 hours)

53. Delete Specific Value Using array_filter

Write a PHP script to delete a specific value from an array using array_filter() function.

Sample Solution:

PHP Code:

<?php
// Associative array representing colors
$colors = array('key1' => 'Red', 'key2' => 'Green', 'key3' => 'Black');

// Value to be excluded from the array
$given_value = 'Black';

// Print the original array
print_r($colors);

// Use array_filter with an anonymous function to create a new array excluding the given value
$filtered_array = array_filter($colors, function ($element) use ($given_value) {
    return ($element != $given_value);
});

// Print the original array (Note: This line contains a typo, it should be $filtered_array instead of $new_filtered_array)
print_r($filtered_array);

// Print the new array excluding the given value
print_r($filtered_array);

?>

Output:

Array                                                       
(                                                           
    [key1] => Red                                           
    [key2] => Green                                         
    [key3] => Black                                         
)                                                           
PHP Notice:  Undefined variable: filtered_array in /home/stu
dents/2f6e9db0-f423-11e6-a8c0-b738b9ff32f9.php on line 7    
Array                                                       
(                                                           
    [key1] => Red                                           
    [key2] => Green                                         
)

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to remove a given value from an array by filtering using array_filter and an anonymous function.
Write a PHP function to delete all occurrences of a specific number from an array and then display the new array.
Write a PHP program to filter an array for a specified value and output the array only with values not equal to that target.
Write a PHP script to remove a string value from an array using array_filter while preserving the original keys.

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