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Bug #73468 PHP 7.1: PHP Notice: A non well formed numeric value encountered
Submitted: 2016-11-06 19:37 UTC Modified: 2017-09-10 20:17 UTC
From: spam2 at rhsoft dot net Assigned:
Status: Not a bug Package: Scripting Engine problem
PHP Version: 7.1.0RC5 OS: Linux
Private report: No CVE-ID: None
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 [2016-11-06 19:37 UTC] spam2 at rhsoft dot net 
Description:
------------
in 7.0 the warnings when something in a string *looks like* something where bad but *that* is just kidding

[06-Nov-2016 20:29:39 Europe/Vienna] PHP Notice:  A non well formed numeric value encountered in /Volumes/dune/www-servers/rhsoft/status.php on line 470
<td colspan="5"><?=GetSizeString('', ($dbsize*1024))?></td>

[06-Nov-2016 20:16:15 Europe/Vienna] PHP Notice:  A non well formed numeric value encountered in /Volumes/dune/www-servers/phpincludes/global_rh_misc.inc.php on line 1883 
$Diff = round($BalkenBreite - $AktBreite + 1, 2) . 'px;';

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 [2016-11-06 19:41 UTC] spam2 at rhsoft dot net 
ok, now i get puke

Notice: A non well formed numeric value encountered in /Volumes/dune/www-servers/rhsoft/status.php on line 466

$dbsize_bytes = $dbsize*1024;

that's just a simple multiplication, no formatting, no magic
 [2016-11-06 19:46 UTC] nikic@php.net
-Status: Open +Status: Not a bug
 [2016-11-06 19:46 UTC] nikic@php.net 
What is the value of $dbsize? Probably something like "128K", which is not a number. If you want to suppress the warning, use an explicit (int) cast.

See https://wiki.php.net/rfc/invalid_strings_in_arithmetic for more information.
 [2016-11-06 19:49 UTC] spam2 at rhsoft dot net 
(floatval($dbsize)*1024) 
((float)$dbsize*1024))

are workarounds - but sicne when is PHP a strong typed language?
 [2016-11-06 19:53 UTC] spam2 at rhsoft dot net 
4077 KB - in other words we have now to typecast everything in doubt which PHP did for more than a decade itself?
 [2016-11-06 21:42 UTC] spam2 at rhsoft dot net 
and BTW - fine that you mention the codeline - what about mention the VARIABLE which the warning is raising?
 [2017-09-10 19:41 UTC] develway at gmail dot com 
I don't get the point about solution?
for example for this simple code in the last line I get the same
Notice: A non well formed numeric value encountered

const BR = "<br>";

$a = 1;
$b = 2.5;
$c = 0xFF;
echo $d = $b + $c . BR;
echo $e = $d * $b . BR;
 [2017-09-10 19:59 UTC] develway at gmail dot com 
I wanted to say, that I don't get what solution must be ...

const BR = "<br>";

$a = 1;
$b = 2.5;
$c = 0xFF;
echo $d = $b + $c . BR;
echo $e = $d * $b . BR;

In the last line the result expected to be float, why appears this Notice:
A non well formed numeric value encountered?
 [2017-09-10 20:08 UTC] develway at gmail dot com 
Notice disappear, but code is ugly :)

echo (float)$e = (float)$d * (float)$b . BR;

I agree that now to avoid Notice we must to typecast expected result, what PHP did for more than a decade itself!!!
 [2017-09-10 20:13 UTC] develway at gmail dot com 
echo $d = $b + $c . BR; //but why PHP doesn't understand that is float?
echo $e = (float)$d * $b . BR;
 [2017-09-10 20:17 UTC] requinix@php.net 
@develway: This isn't a blog. If you think you found a bug (you didn't) then make your own bug report.
$d is "257.2<br>". http://php.net/manual/en/language.operators.precedence.php
 
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