WordPress tip: Conditional tag for blog-related pages

Copy the function below and paste it into your functions.php file:

function is_blog() {
	if (is_home() || is_singular('post') || is_post_type_archive('post'))
		return true;
	else return false;
}

Once done, you can use the function to detect if you’re currently on a blog related page:

<?php
if(is_blog()) {
    //the page is blog related
}
?>

Thanks to Nathan for the tip!