How Can I Efficiently Remove Empty Elements from a PHP Array?

Removing Empty Array Elements

To efficiently remove empty elements from an array of strings, utilize array_filter(). This function conveniently handles the removal of empty values:

$linksArray = array_filter($linksArray);

Preserve Specific Non-Empty Elements

If you need to preserve specific non-empty elements, such as the exact string '0', employ a custom callback:

// PHP 7.4+
print_r(array_filter($linksArray, fn($value) => !is_null($value) && $value !== ''));

// PHP 5.3+
print_r(array_filter($linksArray, function($value) { return !is_null($value) && $value !== ''; }));

// PHP < 5.3
print_r(array_filter($linksArray, create_function('$value', 'return $value !== "";')));

Reindexing Array

To reindex the array after removing empty elements:

$linksArray = array_values(array_filter($linksArray));

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