Join number together in php - E.G. 2 + 2 = 22

Question

I am making a website, so when you register, it sends you a confirmation email with a code. I have used this before, and I am wondering how to do this. I have four 1-9 random numbers, and I am wondering just how to join the numbers together to make a single one, or, if this isn't the proper way to do this, I would love to hear your thoughts.

Example

2 + 2 + 2 + 2 is 2222

Thanks to all of you who solved my question. Concatenation. I am an idiot.

A l w a y s S u n n y · Accepted Answer · 2018-03-31T17:14:51.530

0

This can be done in many way like using . or , and so on. But I prefer with simple concatenation using . See more about concatenation at official site http://php.net/manual/en/language.operators.string.php

$n1= 2;
$n2= 2;
$n3= 2;
$n4= 2;
echo $n1.$n2.$n3.$n4;

Program Output

DEMO: https://eval.in/981727

edited Mar 31 '18 at 17:14

answered Mar 31 '18 at 15:50

A l w a y s S u n n y

36,497
8
60
103

Thanks! I will accept your answer ASAP – whoff Mar 31 '18 at 15:51
@Will OK . best of luck..:) – A l w a y s S u n n y Mar 31 '18 at 15:52

T0t3sMcG0t3s · Answer 2 · 2018-04-03T19:05:39.417

-2

I don't have an instance to test with but you could probably cast to string before using the add operator.

(string)2 + (string)2

If I am thinking correctly that should give you "22".

Edit: I was wrong and "+" is not interchangeable with string concatenation in PHP. the "." operator would be the correct one to use instead and would not require explicitly casting to string.

edited Apr 03 '18 at 19:05

answered Mar 31 '18 at 15:48

T0t3sMcG0t3s

310
1
8

`+` is arithmetic plus. And values will be casted back to numbers. So, no, you're not thinking correctly. – u_mulder Mar 31 '18 at 15:51
fair enough. Hard to remember operator logic between php and other languages off hand. – T0t3sMcG0t3s Mar 31 '18 at 15:54

Join number together in php - E.G. 2 + 2 = 22

2 Answers2