create array with key and value from string

Question

I have a string:

$content = "test,something,other,things,data,example";

I want to create an array where the first item is the key and the second one the value.

It should look like this:

Array
(
    [test] => something
    [other] => things
    [data] => example
)

How can I do that? It's difficult to search for a solution because I don't know how to search this.

It's very similar to this: Explode string into array with key and value

But I don't have a json array.

I tried something like that:

$content = "test,something,other,things,data,example";

$arr = explode(',', $content);

$counter = 1;
$result = array();

foreach($arr as $item) {
    if($counter % 2 == 0) {
        $result[$temp] = $item;
        unset($temp);
        $counter++;
    } else {
        $temp = $item;
        $counter++;
        continue;
    }
}

print_r($result);

But it's a dirty solution. Is there any better way?

Love it when comments: *Have you tried something?* gets completely ignored. — Rizier123, Apr 16 '15 at 12:33
There are so many people writing at the moment. Please give me a bit time for answering^^. I tried to add a counter which checks if the counter value is even or odd. — Vince, Apr 16 '15 at 12:36
@Vince ^^ Then add your attempt to your question and show your effort and work which you have done! — Rizier123, Apr 16 '15 at 12:37

Ahmed Ziani · Accepted Answer · 2015-04-17T07:08:57.040

4

Try this:

$array = explode(',',$content);
$size = count($array);
for($i=0; $i<$size; $i++)
    $result[$array[$i]] = $array[++$i];

edited Apr 17 '15 at 07:08

answered Apr 16 '15 at 12:23

Ahmed Ziani

1,206
3
14
26

Man this is a short solution :) Didn't know that `++$i` works. thank you! – Vince Apr 16 '15 at 12:30
@AhmedZiani Don't do: `$i – Rizier123 Apr 16 '15 at 12:36
@AhmedZiani Because you call `count()` in every iteration! – Rizier123 Apr 16 '15 at 12:42
@AhmedZiani Because it's very bad practice and kills performance?! – Rizier123 Apr 16 '15 at 12:44
1

@AhmedZiani *Yes* Then why did you do it this way? (Extract it from the loop?! Then you only call it once instead of like 200 times?!) – Rizier123 Apr 16 '15 at 12:47
@AhmedZiani *Yes you are right !* And what now? Are you going to edit your answer or just leave it with this quality? (Also you may want to add an explanation for OP and further readers to understand what your code does) – Rizier123 Apr 16 '15 at 12:59

Milen Georgiev · Answer 2 · 2015-04-16T13:20:34.210

Try this:

$content = "test,something,other,things,data,example";
$data = explode(",", $content);// Split the string into an array
$result = Array();
$size = count($data); // Calculate the size once for later use
if($size%2 == 0)// check if we have even number of items(we have pairs)
for($i = 0; $i<$size;$i=$i+2){// Use calculated size here, because value is evaluated on every iteration
$result[$data[$i]] = $data[$i+1];
}

var_dump($result);

score 0 · Answer 3 · answered Apr 16 '15 at 12:30

Try this

$content = "test,something,other,things,data,example";
$firstArray = explode(',',$content);

print_r($firstArray);

$final = array();
for($i=0; $i<count($firstArray); $i++)
{
    if($i % 2 == 0)
    {
        $final[$firstArray[$i]] = $firstArray[$i+1];
    }   
}
print_r($final);

score 0 · Answer 4 · edited Apr 16 '15 at 13:02

0

You could able to use the following:

$key_pair = array();
$arr = explode(',', $content);
$arr_length = count($arr);
if($arr_length%2 == 0)
{
   for($i = 0; $i < $arr_length; $i = $i+2)
   {
     $key_pair[$arr[$i]] = $arr[$i+1];
   }
}
print_r($key_pair);

edited Apr 16 '15 at 13:02

SaidbakR

13,303
20
101
195

answered Apr 16 '15 at 12:30

bravesomesh

33
9

I think an explanation for OP and further readers would be helpful what your code does and why! – Rizier123 Apr 16 '15 at 12:45

score 0 · Answer 5 · answered Apr 16 '15 at 12:31

0

$content = "test,something,other,things,data,example";
$x = explode(',', $content);

$z = array();
for ($i=0 ; $i<count($x); $i+=2){
    $res[$x[$i]] = $x[$i+1];
    $z=array_merge($z,$res);
}

print_r($z);

answered Apr 16 '15 at 12:31

Manish Shukla

1,355
2
8
21

1

I think an explanation for OP and further readers would be helpful what your code does and why! – Rizier123 Apr 16 '15 at 12:45

score 0 · Answer 6 · answered Apr 16 '15 at 12:32

I have tried this example this is working file.

Code:-

    <?php
 $string = "test,something|other,things|data,example";
 $finalArray = array();

 $asArr = explode( '|', $string );
 foreach( $asArr as $val ){
 $tmp = explode( ',', $val );
 $finalArray[ $tmp[0] ] = $tmp[1];
 }
 echo "After Sorting".'<pre>';
 print_r( $finalArray );
 echo '</pre>';
 ?>

Output:-

Array
(
    [test] => something
    [other] => things
    [data] => example
)

For your reference check this Click Here

Hope this helps.

My string is very long so I can't just replace each second comma with a pipe. :( — Vince, Apr 16 '15 at 12:33

Jakir Hossain · Answer 7 · 2015-04-16T13:02:42.060

0

$content = "test,something,other,things,data,example";

$contentArray = explode(',',$content);
for($i=0; $i<count($contentArray); $i++){
    $contentResult[$contentArray[$i]] = $contentArray[++$i];
}
print_r( $contentResult);

Output

Array
(
    [test] => something
    [other] => things
    [data] => example
)

$contentResult[$contentArray[1]] = $contentArray[2];
$contentResult[$contentArray[3]] = $contentArray[4];
$contentResult[$contentArray[5]] = $contentArray[6];

edited Apr 16 '15 at 13:02

answered Apr 16 '15 at 12:34

Jakir Hossain

2,457
18
23

I think an explanation for OP and further readers would be helpful what your code does and why! – Rizier123 Apr 16 '15 at 12:45

create array with key and value from string

7 Answers7