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PHP Array Exercises : Filter array elements with certain key-names

PHP Array: Exercise-51 with Solution

Write a PHP program to filter out some array elements with certain key-names.

Sample Solution:

PHP Code:

<?php
// Original associative array
$first_array = array('c1' => 'Red', 'c2' => 'Green', 'c3' => 'White', 'c4' => 'Black'); 

// Array containing keys to be excluded from the original array
$second_array = array('c2', 'c4');

// Use array_flip to swap keys and values, then array_diff_key to get the difference in keys
$result = array_diff_key($first_array, array_flip($second_array));

// Print the resulting array
print_r($result);

?>

Output:

Array                                                       
(                                                           
    [c1] => Red                                             
    [c3] => White                                           
)

Flowchart:

Flowchart: PHP - Filter out some elements with certain key-names

PHP Code Editor:

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Previous: Write a PHP script to get the last value of an array without affecting the pointer.
Next: Write a PHP function to filter a multi-dimensional array. The function will return those items that will match with the specified value.

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