Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

PHP

jinhwa yoo
jinhwa yoo
10,042 Points

help me

$paging .= '<li class="page current">' . $i . '</li>';

???

can you explain each by each???

$paging = declaring variable.

.= = ???

'<li class="page current">'</li>'; = ???? .$i. = ????

1 Answer

First, x .= y is shorthand for x = x . y, where . is the symbol for string concatenation. So "Hello," . " World!" yields "Hello, World!", and "a" .= "b" is the same as "a" = "a" . "b" and yields "ab".

Second, '<li class="page current">'</li>' is a string that contains an li element, and the li tag contains one attribute class="page current".

Presumably this code is in a loop, and what it is likely doing is building a set of <li> elements for an ordered or unordered list.

If there's anything else that is strange, or you're not sure of, please let me know.

jinhwa yoo
jinhwa yoo
10,042 Points

thanks alot.. master...

jinhwa yoo
jinhwa yoo
10,042 Points

$subString('&searchColumn=' . $searchColumn . '&searchText=' . $searchText;

$sql 'select count(*) as cnt from board_free where ' . $searchColumn .' like "%' . $searchText . '%"';

I don't understand.... plz, help me.