duplicate one element from php array

Question

how i can duplicate one element from array:

for example, i have this array:

Array
(
    [LRDEPN] => 0008.jpg
    [OABCFT] => 0030.jpg
    [SIFCFJ] => 0011.jpg
    [KEMOMD] => 0022.jpg
    [DHORLN] => 0026.jpg
    [AHFUFB] => 0029.jpg
)

if i want to duplicate this: 0011.jpg , how to proceed?

i want to get this:

Array
(
    [LRDEPN] => 0008.jpg
    [OABCFT] => 0030.jpg
    [SIFCFJ] => 0011.jpg
    [NEWKEY] => 0011.jpg
    [KEMOMD] => 0022.jpg
    [DHORLN] => 0026.jpg
    [AHFUFB] => 0029.jpg
)

You can't have two array elements with the same key, explain better what you need to do. — Matteo Riva
– Matteo Riva, Commented Apr 22, 2010 at 9:04
i want to duplicate one element! generate a new key with the value i want to duplicate! — robertdd
– robertdd, Commented Apr 22, 2010 at 9:08

zaf · Accepted Answer · 2010-04-22 09:22:00Z

1

Something like the following, change the uniqid() function to yours:

<?php

$a=array(
    'LRDEPN' => '0008.jpg',
    'OABCFT' => '0030.jpg',
    'SIFCFJ' => '0011.jpg',
    'KEMOMD' => '0022.jpg',
    'DHORLN' => '0026.jpg',
    'AHFUFB' => '0029.jpg'
);

$i='0011.jpg';

$newArray=array();
foreach($a as $k=>$v){
    $newArray[$k]=$v;
    if($v==$i) $newArray[uniqid()]=$v;
}

print_r($newArray);

?>

Which gets you:

Array
(
    [LRDEPN] => 0008.jpg
    [OABCFT] => 0030.jpg
    [SIFCFJ] => 0011.jpg
    [4bd014ebf3351] => 0011.jpg
    [KEMOMD] => 0022.jpg
    [DHORLN] => 0026.jpg
    [AHFUFB] => 0029.jpg
)

answered Apr 22, 2010 at 9:22

zaf

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Comments

codaddict · Accepted Answer · 2010-04-22 09:13:00Z

1

EDIT:

Looks like you modified your question :)

If you want to have a new key with the duplicated value you can do:

$array_name['NEWKEY'] = $array_name['SIFCFJ']

Old answer:

You cannot.

An array cannot have multiple values with same key.

$arr = array();
$arr['foo'] = 'bar1';
$arr['foo'] = 'bar2'; // this will wipe out bar1

And if you try to duplicate:

$arr = array();
$arr['foo'] = 'bar1';
$arr['foo'] = 'bar1';

you'll be overwriting the value bar1 associated with key foo with bar1 itself. The array will have 1 key value pair not 2.

edited Apr 22, 2010 at 9:13

answered Apr 22, 2010 at 9:05

codaddict

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3 Comments

robertdd Over a year ago

ok!i understand, i edited the question! i will generate a new key, but i want the value to be the same!

codaddict Over a year ago

@robertdd: Having a new key with the old value is possible. I've updated my answer.

robertdd Over a year ago

how i cand add the $array_name['NEWKEY'] right after $array_name['SIFCFJ'] ?

oezi · Accepted Answer · 2010-04-22 09:08:15Z

0

$arr['newkey'] = $arr['oldkey'];
natsort($arr);

answered Apr 22, 2010 at 9:08

oezi

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