What is the potential issue with using a loop to remove empty array elements in PHP?

Using a loop to remove empty array elements in PHP can cause issues with array keys being reset and potentially affecting the iteration or functionality of the code. To solve this issue, you can use array_filter() with a callback function to remove empty elements while preserving the original array keys. 

// Original array
$array = ['apple', '', 'banana', '', 'cherry'];

// Remove empty elements while preserving keys
$array = array_filter($array, function($value) {
    return $value !== '';
});

print_r($array);

Keywords

loop empty array elements unset array_values array_splice

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