What do the . do? 2

[sazebac]

Could someone tell me what the . do in PHP as in the following Insert Statement:
"INSERT INTO region VALUES
(NULL, " .
"\"" . $regionName . "\", " .
"\"" . $description . "\", " .
"NULL)";

also, what do the "\"" do? Thanks.

 

[skiflyer]

The .'s append

the \'s are escape characters.

Let me elaborate.

$name = "sazebac";
$my_string = "Hello, how are you ".$name;
echo $my_string;

would print, Hello, how are you sazebac.

$my_string = 'Hello, how're you doing today sazebac';

Would result in an error, because the string ends at the apostrophie in how're... so you escape the apostrophe ...

$my_string = 'Hello, how\'re you doing today sazebac';

such that the parser knows to not end the string there.

-Rob

 

[sazebac]

Thanks for the input. I'm trying to figure out the following code and there's a few characters I don't understand. IN the following code:
-------------------------------------------------------
input
if (empty($regionName) || empty($description))
{
?>
--------------------------------------------------------

is the || supposed to mean concatenate the two?

------------------------------------------------------
else
{
if (!($connection = @ mysql_connect($hostName,
$username,
$password)))
die("Could not connect to database"

if (!mysql_select_db($databaseName, $connection))
showerror();

---------------------------------------------------------
what does the @ symbol represent?

 

[danielhozac]

Do some reading:

http://www.php.net/manual/en/

//Daniel

 

[sleipnir214]

The "@"-symbol is PHP's the error-supression operator:

http://www.php.net/manual/en/language.operators.errorcontrol.php

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TANSTAAFL!

 

[skiflyer]

And the || is the logical OR.