[Resolved] .?

[ComputerNerd888]

I see it all the time in this book I am reading but I don't understand why it is there. The ".". They put it in front of the = sign all the time. So what dose the . do? Here is an example:

foreach ($imageFiles as $currentFile) {

$output .= <<<HERE

<a href "$currentFile">

<img src = "$currentFile"
         height = 50
         width = 50>

See after the $output he has the period in front of the = sign! What dose this do?

Thanks,
Andrew

[shawon22]

it is used to concatenate 2 strings

for example
$a = 2
$b = 3;

$a = $a . $b;

or u could just do this instead

$a .= $b;

[ComputerNerd888]

OK so if $output all ready has something in it and you just want to add to it you would do .= which adds to it not writes over it?

Thanks,
Andrew

[shawon22]

yup

[ComputerNerd888]

OK thanks a lot. You cleared up a lot of questions for me and made the chapter I am reading understandable!

Thanks Again,
Andrew