function not returning variable value in a string

Question

The function below is working fine, but not returning the value for only the variable $field in the string given to $reslt:

function req($slice,$field)
{
   if ($slice == "") {
      $reslt =  $field. ' cannot be empty<br />'; 
      return $reslt;
   }else{
      $reslt = "";
      return $reslt;
   }
}
req($slice,$field);
$err_mess = req();
echo $err_mess; // gives me 'cannot be empty' as result but does not show the value for the '$field' variable included in the string

Should there be a period (.) after $field in the fourht line? $reslt = $field. — Cindy Meister
– Cindy Meister, Commented Dec 22, 2015 at 16:46

Bart Friederichs · Accepted Answer · 2015-12-22 16:35:09Z

1

Here:

req($slice,$field);
$err_mess = req();

you are calling your function twice: once discarding the result, the second time without parameters.

I reckon you need

$err_mess = req($slice, $field);

answered Dec 22, 2015 at 16:35

Bart Friederichs

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4 Comments

Manu Over a year ago

Thanks, adding the parameters did it, but one quick question, why do you say i am calling the function twice. Am only calling the function once, second time i am trying to get the return result into a variable

Bart Friederichs Over a year ago

@Manu, that's not how it works. Read the paragraph on functions in the PHP manual again.

Manu Over a year ago

can you please tell me the best way to return the $reslt variable to $err_mess the right way ... I have already gone through the document you provided, the exixting code is the besti could come up with

Bart Friederichs Over a year ago

Exactly how I describe in my answer.

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