php Adding numbers in a variable and a string

Question

I want to be able to add a number from a variable and from a string together. The variable $userinfo->pilotid will always be different depending on a User ID, for example it maybe 1.

I'd like to introduce an offset to this variable, by always adding 1000 to that number. How can I add the both with this?

Auth::$userinfo->code . '' . Auth::$userinfo->pilotid

Something along the lines of...

$offset = '1000';
echo Auth::$userinfo->code . '' . Auth::$userinfo->pilotid + $offset

Would the above work or am I mixing up things?

It echoes 10001000. $userinfo->pilotid when printed is 1. — user2442178
– user2442178, Commented Jul 31, 2013 at 0:05

jh314 · Accepted Answer · 2013-07-31 00:06:13Z

2

You can use parenthesis so that you add the offset rather than concatenating the offset:

echo Auth::$userinfo->code . '' . (Auth::$userinfo->pilotid + $offset);

answered Jul 31, 2013 at 0:06

jh314

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AlienHoboken · Accepted Answer · 2013-07-31 00:08:31Z

0

When concatenating, you don't need to include the '', and you should wrap the addition operation in parenthesis.

$offset = 1000;
echo Auth::$userinfo->code . (Auth::$userinfo->pilotid + $offset);

The '' was superfluous as it added nothing. PHP has type juggling, so you can concatenate an integer directly onto a string. You just need to perform the addition separately, ergo the parenthesis.

answered Jul 31, 2013 at 0:08

AlienHoboken

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