Function to Round Variable Values - PHP

Asked Mar 29 '15 at 19:39

Active Mar 29 '15 at 19:39

Viewed 29 times

I need to change several variable values by rounding them, and while it works if I specify each variable individually I'm having trouble getting it to do the same thing in a function.

Single Variable Result = 9.5 (Works correctly)

$var = 9.54;
If ($var != NULL AND $var !== "") {
   $var = round($var , 1, PHP_ROUND_HALF_EVEN); 
}
echo $var;

Function Result = 9.54 (Doesn't work correctly)

$a = 9.54;
function RoundDecimal($var) {
   If ($var != NULL AND $var !== "") {
      $var = round($var , 1, PHP_ROUND_HALF_EVEN); 
   }
}
RoundDecimal($a); // Calls function
echo $a;

asked Mar 29 '15 at 19:39

Chaya Cooper

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1

And you want to pass the variables by reference, so change your function header to: `function RoundDecimal(&$var) {` – Rizier123 Mar 29 '15 at 19:41
include in your function return $var – Leandro Papasidero Mar 29 '15 at 19:48
@Rizier123 - That did it :-D Would you mind explaining that to me? – Chaya Cooper Mar 29 '15 at 20:07
1

Because you didn't passed your argument [by reference](http://php.net/manual/en/language.references.pass.php)! – Rizier123 Mar 29 '15 at 20:08
@Rizier123 - Thanks for explaining something new to me :-) btw, If you want to add it as an answer, I'd love to accept it :-) – Chaya Cooper Mar 29 '15 at 20:33
@Rizier123 - Is there something else I need to do in order to insert the modified values into a db? It's performing properly before inserting them, but it then inserts the original values in the db. – Chaya Cooper Mar 29 '15 at 21:32
No ?! You just need to change the value before you insert it – Rizier123 Mar 29 '15 at 21:34
@Rizier123 I realized that it seems to be inherent to 'Serialize'. Now if I could only figure out how to get around that ;-) – Chaya Cooper Mar 30 '15 at 01:30

Function to Round Variable Values - PHP

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