insert an element in numbered array

[somaboy mx]

Hello,


I need to do the following:

Say I have a multidim array:

$array = array();

$array[0]['name'] = 'Kevin';
$array[0]['age'] = 23;

$array[1]['name'] = 'Julia';
$array[1]['age'] = 31;

$array[2]['name'] = 'Bob';
$array[2]['age'] = 26;

$array[3]['name'] = 'Drew';
$array[3]['age'] = 37;

and I have a seperate array:

$person = array();
$person['name'] = 'Dana';
$person['age'] = 33;

now I want to insert the $person array into the $array in such a way
that it ends up at index 1 and the subsequent elements get pushed up and
renumbered, so $array[1] becomes $array[2] and so on.

Does php have a built-in function that does this?


..soma

[Ewoud Dronkert]

Re: insert an element in numbered array

On Wed, 01 Jun 2005 13:29:41 +0200, somaboy mx wrote:[color=blue]
> now I want to insert the $person array into the $array in such a way
> that it ends up at index 1 and the subsequent elements get pushed up and
> renumbered, so $array[1] becomes $array[2] and so on.[/color]

No one built-in function, but you could use array_slice and array_merge:

$p = array( 'name' => 'John', 'age' => 42 );
$insertat = 1;

if ( $insertat <= 0 )
{
$a = array_merge( array( $p ), $a );
}
elseif ( $insertat >= count( $a ) )
{
$a[] = $p;
}
else
{
$a0 = array_slice( $a, 0, $insertat );
$a1 = array_slice( $a, $insertat );
$a = array_merge( $a0, array( $p ), $a1 );
}


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[Andy Hassall]

Re: insert an element in numbered array

On Wed, 01 Jun 2005 13:29:41 +0200, somaboy mx <nosuch@fakemai l.fk> wrote:
[color=blue]
>Say I have a multidim array:
>
>$array = array();
>
>$array[0]['name'] = 'Kevin';
>$array[0]['age'] = 23;[/color]
[snip]
[color=blue]
>and I have a seperate array:
>
>$person = array();
>$person['name'] = 'Dana';
>$person['age'] = 33;
>
>now I want to insert the $person array into the $array in such a way
>that it ends up at index 1 and the subsequent elements get pushed up and
>renumbered, so $array[1] becomes $array[2] and so on.
>
>Does php have a built-in function that does this?[/color]

Yes, array_splice.

<pre>
<?php
$array = array();

$array[0]['name'] = 'Kevin';
$array[0]['age'] = 23;

$array[1]['name'] = 'Julia';
$array[1]['age'] = 31;

$array[2]['name'] = 'Bob';
$array[2]['age'] = 26;

$array[3]['name'] = 'Drew';
$array[3]['age'] = 37;

$person = array();
$person['name'] = 'Dana';
$person['age'] = 33;

print_r($array) ;
print_r($person );

array_splice($a rray, 1, 0, array($person)) ;

print_r($array) ;
?>
</pre>

--
Andy Hassall / <andy@andyh.co. uk> / <http://www.andyh.co.uk >
<http://www.andyhsoftwa re.co.uk/space> Space: disk usage analysis tool

[Ewoud Dronkert]

Re: insert an element in numbered array

On Wed, 01 Jun 2005 13:42:15 +0100, Andy Hassall wrote:[color=blue]
> Yes, array_splice.[/color]

Ah damn, overlooked :)


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[somaboy mx]

Re: insert an element in numbered array

Andy Hassall wrote:
[color=blue]
> Yes, array_splice.[/color]

Thanks! I was afraid that array_splice would merely replace the element
at the given index but obviously it works.

thanks again


..soma