echo or var

I would like to know if echoing text as it is created, or adding it to a variable then echoing it at the end of the script is more efficient?

Also I notice that when adding text to a var or echoing it, ' and " and different.

$text='Some Text';
echo("$text");

echos Some Text. but

$text='Some Text';
echo('$text');

echos $text

Does that make ' more efficient than " ?

The only issue of where to output text concerns correct document structure. Output the text as valid html and everyone's happy. Any other aspect of data output is a matter of taste.

The difference between using single and double quotes is that php will treat everything inside single quotes as a literal string. When using double quotes, php will parse the string first then output the final data. Double quotes also require php to use more resources than singles.

Thanks for answering that !