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To: Rick Widmer <vchkpw@developersdesk.com>
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References: <44584619.60400@lorenso.com> <200605030815.34801.johannes@php.net> <44585828.1030603@vocalspace.com> <BCFE5FAA-E5EF-4401-BA0A-F353810FCA0F@aplosmedia.com> <44585E89.6000400@vocalspace.com> <44586BDF.6040600@developersdesk.com>
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Subject: Re: [PHP-DEV] Seeking 'coalesce' php internal function
From: dante@vocalspace.com ("D. Dante Lorenso")

Rick Widmer wrote:
> D. Dante Lorenso wrote:
>> Eric,
>> This reply is too basic and is not the answer.  The problem is more 
>> complex then you have grasped.
> function ifsetor()  {
> $args = func_get_args();
> $count = count( $args );
>
> for( $i=0; $i<$count; $i++ ) {
>    if isset( $args[ $i ] )) {
>       return $args[ $i ];
>    }
>
> return false;
> }
>


No, that doesn't address the problem.  See this:

---------- 8< -------------------- 8< -------------------- 8< ----------
<pre>
<?php
function ifsetor()  {
    $args = func_get_args();
    $count = count($args);
    for ($i=0; $i<$count; $i++) {
        if (isset($args[$i])) {
            return $args[$i];
        }
    }
    return false;
}
print ifsetor($x, $y, $z, "dante")."\n";
?>
</pre>

PHP Notice:  Undefined variable: x in .../ifsetor.php on line 13
PHP Notice:  Undefined variable: y in .../ifsetor.php on line 13
PHP Notice:  Undefined variable: z in .../ifsetor.php on line 13
---------- 8< -------------------- 8< -------------------- 8< ----------

See my post regarding a specification for 'filled()' as a function.  An 
important feature is that warnings about unset variables should not 
occur.  Your suggestion does not qualify.  This problem can not be 
solved in userspace.

Dante