Extract text content from HTML

index.php

<?php

if (! function_exists('extractTextContentFromHTML')) {
	/**
	 * Extract text content from HTML.
	 * This is certainly perfectible, but it works well in most situations.
	 *
	 * @see https://regex101.com/r/3nbq1R/1
	 *
	 * @param string $html
	 *
	 * @return string
	 */
	function extractTextContentFromHTML(string $html): string
	{
		$regex = '/<([a-z][a-z0-9]*)\b[^>]*>([^<]+)<\/\1>/';

		preg_match(pattern: $regex, subject: $html, matches: $captured);

		return $captured[2] ?? '';
	}
}