How do I concatenate a string in PHP?

Question

I want to echo a PHP function with some string literal HTML.

This is how I thought it was done:

echo '<a href="' + $prevpost->url()  + '" class="postnav left nextpost"></a>';

...but that returns nothing. I've tried small variations on where the quotes are etc. but I'm worried I'm barking up the wrong tree and I can't really find what I need from searching.

Note: echo $prevpost->url(); does return the URL I am trying to link to, before anybody asks if that works.

possible duplicate of [PHP string concatenation](http://stackoverflow.com/questions/11441369/php-string-concatenation) — CodeCaster, May 30 '13 at 13:15
Hi, questions like this can be easily solved by Googling the question title. Always remember to do that first. Thanks. — Pekka, Aug 05 '13 at 10:04

score 7 · Answer 1 · answered May 30 '13 at 13:11

7

The concatenation operator in PHP is . and not +

answered May 30 '13 at 13:11

Maxim Krizhanovsky

26,265
5
59
89

score 6 · Accepted Answer · answered May 30 '13 at 13:11

6

Change it to below, in php . (dot) is used as a concatenation operation in php,

echo '<a href="' . $prevpost->url()  . '" class="postnav left nextpost"></a>';

answered May 30 '13 at 13:11

Rikesh

26,156
14
79
87

score 3 · Answer 3 · answered May 30 '13 at 13:11

3

the concatenator in PHP is the . operator

answered May 30 '13 at 13:11

eidsonator

1,319
2
11
25

score 3 · Answer 4 · answered May 30 '13 at 13:14

Like other people have mentioned, the PHP concatenation operator is . rather than +.

However, instead of string concatenation, you can use commas when using PHP's echo() function to gain a small speed improvement over concatenation.

Your code would then look like:

echo '<a href="',  $prevpost->url(), '" class="postnav left nextpost"></a>';

score 1 · Answer 5 · answered May 30 '13 at 13:12

1

You can use dot to concatenate or

echo "<a href='{prevpost->url()}' class='postnav left nextpost'></a>";

answered May 30 '13 at 13:12

Vlad Bereschenko

338
1
3
11

score 1 · Answer 6 · edited May 30 '13 at 13:16

1

In almost any other language we use the + operator, but in php we use the . operator for the concatinating. Try to replace the + with .:

echo '<a href="' . $prevpost->url()  . '" class="postnav left nextpost"></a>';

edited May 30 '13 at 13:16

CodeCaster

147,647
23
218
272

answered May 30 '13 at 13:13

GautamD31

28,552
10
64
85

How do I concatenate a string in PHP?

6 Answers6