In terms of performance, is it better to use an array or a database to filter words in PHP?

When filtering words in PHP, using an array is generally faster and more efficient than querying a database. Arrays are stored in memory, making lookups quicker compared to database queries which involve disk I/O. For small to medium-sized datasets, using an array for filtering is recommended for better performance. 

$words = ['apple', 'banana', 'cherry', 'date'];

// Word to filter
$wordToFilter = 'banana';

if (in_array($wordToFilter, $words)) {
    echo "$wordToFilter is in the list";
} else {
    echo "$wordToFilter is not in the list";
}

Keywords

array database performance filtering PHP

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