How do search engine robots typically handle conflicting instructions from robots.txt and meta tags in PHP websites?

When search engine robots encounter conflicting instructions from robots.txt and meta tags in PHP websites, they typically prioritize the robots.txt file over meta tags. To ensure consistent indexing and crawling behavior, it's important to align the directives in both the robots.txt file and meta tags. This can be achieved by carefully reviewing and updating the directives in both places to ensure they are consistent.

// Example of setting meta tag robots directive in PHP
echo '<meta name="robots" content="index, follow">';