function call as an array

[Skeleton Man]

Hi all,

I'm after the PHP equivlent to this Perl construct:

print @{[someFunctionCal l()]}[0];

In the above example someFunctionCal l() would return an array, and we're
printing the first item from the returned array..

How do I do this in PHP ? (without first assigning the output of the
function call to a variable)

Chris

[Jerry Stuckle]

Re: function call as an array

Skeleton Man wrote:

Hi all,
>
I'm after the PHP equivlent to this Perl construct:
>
print @{[someFunctionCal l()]}[0];
>
In the above example someFunctionCal l() would return an array, and we're
printing the first item from the returned array..
>
How do I do this in PHP ? (without first assigning the output of the
function call to a variable)
>
Chris
>
>

Chris,

I don't think you can.

--
=============== ===
Remove the "x" from my email address
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jstucklex@attgl obal.net
=============== ===

[Steve]

Re: function call as an array


"Jerry Stuckle" <jstucklex@attg lobal.netwrote in message
news:wsidndQz3O mUNbPbnZ2dnUVZ_ tzinZ2d@comcast .com...
| Skeleton Man wrote:
| Hi all,
| >
| I'm after the PHP equivlent to this Perl construct:
| >
| print @{[someFunctionCal l()]}[0];
| >
| In the above example someFunctionCal l() would return an array, and we're
| printing the first item from the returned array..
| >
| How do I do this in PHP ? (without first assigning the output of the
| function call to a variable)
| >
| Chris
| >
| >
|
| Chris,
|
| I don't think you can.

currently, you can't in php. you have to return the full array to a variable
and then access the element(s).

[Rami Elomaa]

Re: function call as an array

news:v7idndPlgc RHArPbnZ2dnUVZ_ j-dnZ2d@wightman. ca...

Hi all,
>
I'm after the PHP equivlent to this Perl construct:
>
print @{[someFunctionCal l()]}[0];
>
In the above example someFunctionCal l() would return an array, and we're
printing the first item from the returned array..
>
How do I do this in PHP ? (without first assigning the output of the
function call to a variable)

If it indeed is the first element, then you can use reset (and for the last
element end) but there is no such functionality for returning the n'th
element.

echo reset(functionc all());

http://fi2.php.net/manual/en/function.reset.php

reset() rewinds array's internal pointer to the first element and returns
the value of the first array element, or FALSE if the array is empty.


--
Rami.Elomaa@gma il.com

"Good tea. Nice house." -- Worf

[Toby A Inkster]

Re: function call as an array

Rami Elomaa wrote:

If it indeed is the first element, then you can use reset (and for the last
element end) but there is no such functionality for returning the n'th
element.
>
echo reset(functionc all());

If you need the nth item, it's fairly easy to write your own function to
do this:

function array_n($array, $n) { return $array[$n]; }

echo array_n(functio ncall(), 2);

--
Toby A Inkster BSc (Hons) ARCS

http://tobyinkster.co.uk/

Geek of ~ HTML/SQL/Perl/PHP/Python*/Apache/Linux

* = I'm getting there!

[Toby A Inkster]

Re: function call as an array

Skeleton Man wrote:

print @{[someFunctionCal l()]}[0];

PS -- this sort of thing is generally unsafe, as you've not checked that
the returned array even *has* an element with index 0. someFunctionCal l
might be defined as:

function someFunctionCal l ()
{
if (some error condition)
return FALSE;
else
return array(etc, etc, etc);
}

You should really check that someFunctionCal l has returned an array, and
that the array has an element 0 before you try to print element 0 out!

--
Toby A Inkster BSc (Hons) ARCS

http://tobyinkster.co.uk/

Geek of ~ HTML/SQL/Perl/PHP/Python*/Apache/Linux

* = I'm getting there!

[Skeleton Man]

Re: function call as an array

>You should really check that someFunctionCal l has returned an array, and

>that the array has an element 0 before you try to print element 0 out!

I know it will always return an array with at one least element.. but
that's besides the point really..

Chris