How to use the `count` filter to calculate the number of times a keyword appears in a string or array?
In website content operation, we often need to understand the frequency of certain specific keywords appearing in articles, product descriptions, and other text.This is very valuable for SEO optimization, content quality analysis, and even just data statistics.AnQi CMS provides a powerful and flexible template system, which includes a very practical `count` filter, which can help us easily achieve this goal.### Understanding the `count` filter
In simple terms, `count`