Can't find built-in PHP function which I know exists...

[Daz]

Hi Everyone. I know this is a stupid question, but I have been sifting
through php.net and I am about ready to pull my hair out over it...

I have seen a function similar to in_array() and array_search() which
returns the 0-based index number of the specified element if it exists.

Please could someone point me in the right direction?

Many thanks!

Daz.

[peter]

Re: Can't find built-in PHP function which I know exists...

Hi Everyone. I know this is a stupid question, but I have been sifting

through php.net and I am about ready to pull my hair out over it...
>
I have seen a function similar to in_array() and array_search() which
returns the 0-based index number of the specified element if it exists.
>
Please could someone point me in the right direction?

do you mean reset($array)?

[Pedro Graca]

Re: Can't find built-in PHP function which I know exists...

Daz wrote:

I have seen a function similar to in_array() and array_search() which
returns the 0-based index number of the specified element if it exists.
>
Please could someone point me in the right direction?

I don't think there's such a function built-in into PHP;
but you can build your own ...

<?php
function array_function( $needle, $array) {
$n = 0;
foreach ($array as $value) {
if ($needle == $value) return $n;
++$n;
}
}

$data = array('name'=>' forty-two', 'dob'=>'2006-10-21', 'eye-color'=>'brown' );
$zero_index = (int)array_func tion('brown', $data);

### if ($zero_index != 2) {
### // error!
### }
?>

What you would use it for is beyond my imagination :)

--
File not found: (R)esume, (R)etry, (R)erun, (R)eturn, (R)eboot

[Pedro Graca]

Re: Can't find built-in PHP function which I know exists...

Pedro Graca wrote:

<?php
function array_function( $needle, $array) {
$n = 0;
foreach ($array as $value) {
if ($needle == $value) return $n;
++$n;
}

return false;

}
>
$data = array('name'=>' forty-two', 'dob'=>'2006-10-21', 'eye-color'=>'brown' );
$zero_index = (int)array_func tion('brown', $data);
>
### if ($zero_index != 2) {
### // error!
### }
?>

--
File not found: (R)esume, (R)etry, (R)erun, (R)eturn, (R)eboot

I don't check the dodgeit address (very often).
If you *really* need to mail me,
use the address in the Reply-To header.

[Andy Hassall]

Re: Can't find built-in PHP function which I know exists...

On 21 Oct 2006 11:40:15 -0700, "Daz" <cutenfuzzy@gma il.comwrote:

>Hi Everyone. I know this is a stupid question, but I have been sifting
>through php.net and I am about ready to pull my hair out over it...
>
>I have seen a function similar to in_array() and array_search() which
>returns the 0-based index number of the specified element if it exists.

Isn't that what array_search already does on numerically-indexed arrays?

Or do you want the index of the key for the element, in the array of keys for
the array? In which case it sounds like two array_search() calls:

<?php
$a = array(
'fish' ='fingers',
'dog' ='hot dog',
'cow' ='steak',
);

print array_search(ar ray_search('hot dog', $a), array_keys($a)) ;
?>

Output: 1

--
Andy Hassall :: andy@andyh.co.u k :: http://www.andyh.co.uk
http://www.andyhsoftware.co.uk/space :: disk and FTP usage analysis tool

[Daz]

Re: Can't find built-in PHP function which I know exists...


Pedro Graca wrote:

Pedro Graca wrote:

<?php
function array_function( $needle, $array) {
$n = 0;
foreach ($array as $value) {
if ($needle == $value) return $n;
++$n;
}

>
return false;
>

}

$data = array('name'=>' forty-two', 'dob'=>'2006-10-21', 'eye-color'=>'brown' );
$zero_index = (int)array_func tion('brown', $data);

### if ($zero_index != 2) {
### // error!
### }
?>

Ok, I am happy yo build my own, I could have just swore that I saw a
function that deoes it.

Thanks for your input.

[Daz]

Re: Can't find built-in PHP function which I know exists...


Andy Hassall wrote:

On 21 Oct 2006 11:40:15 -0700, "Daz" <cutenfuzzy@gma il.comwrote:
>

Hi Everyone. I know this is a stupid question, but I have been sifting
through php.net and I am about ready to pull my hair out over it...

I have seen a function similar to in_array() and array_search() which
returns the 0-based index number of the specified element if it exists.

>
Isn't that what array_search already does on numerically-indexed arrays?
>
Or do you want the index of the key for the element, in the array of keys for
the array? In which case it sounds like two array_search() calls:
>
<?php
$a = array(
'fish' ='fingers',
'dog' ='hot dog',
'cow' ='steak',
);
>
print array_search(ar ray_search('hot dog', $a), array_keys($a)) ;
?>
>
Output: 1
>

Hi Andy. Now that achieves exactly what I am looking for without
iterating through the whole array as such.

Many thanks.

Daz