Display a text snippet if one of the taxonomy terms is 'green'?

I want to be able to show or hide a text snippet on a node based on whether or not it was tagged with a specific taxonomy 开发者_StackOverflow社区term.

Something along the lines of:

if (term('green')) {
  echo"this is green";
}
else {
  echo "not green";
}

What is the Drupal way of doing this?

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Assuming from your example that you're working from inside of node.tpl.php, and that you have a single very specific term in mind:

You can access $taxonomy->taxonomy_term_YourTermID from within your node.tpl.php file, and test based on that.

If you'd like a more abstract solution, I'd recommend installing the devel module and building a function in your template.php files based on what shows up under the 'Devel' tab in the relevant node.