php foreach: put each of the loop result in one variable

Question

I think this is probably a very simple but I can get my head around! How can I put each of the loop result in one variable only? for instance,

$employeeAges;
$employeeAges["Lisa"] = "28";
$employeeAges["Jack"] = "16";
$employeeAges["Ryan"] = "35";
$employeeAges["Rachel"] = "46";
$employeeAges["Grace"] = "34";

foreach( $employeeAges as $key => $value){
    $string = $value.',';
}

echo $string; 
// result 34,
// but I want to get - 28,16,35,46,34, - as the result

Many thanks, Lau

score 25 · Accepted Answer · answered Aug 20 '10 at 17:50

25

You need to use concatenation...

$string .= $value.',';

(notice the .)...

answered Aug 20 '10 at 17:50

ircmaxell

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How would you remove the last ',' – utdev Mar 17 '17 at 11:22

score 9 · Answer 2 · answered Aug 20 '10 at 17:52

9

Consider using implode for this specific scenario.

$string = implode(',', $employeeAges);

answered Aug 20 '10 at 17:52

Brandon Horsley

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score 7 · Answer 3 · edited Mar 21 '13 at 12:18

7

You can also try

$string = '';
foreach( $employeeAges as $value){
    $string .= $value.',';
}

I tried that and it works.

edited Mar 21 '13 at 12:18

Spontifixus

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answered Mar 20 '13 at 18:15

Mike

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score 3 · Answer 4 · answered Aug 20 '10 at 17:50

3

foreach( $employeeAges as $key => $value){
    $string .= $value.',';
}

You are resetting your string variable each time through your loop. Doing the above concatenates $value to $string for each loop iteration.

answered Aug 20 '10 at 17:50

Tommy

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score 2 · Answer 5 · answered Aug 20 '10 at 17:51

Um, what about this?

$string = "";
foreach( $employeeAges as $key => $value){
    $string .= $value.',';
}

You are resetting the variable each time, this starts with the empty string and appends something each time. But there are propably betters ways to do such tasks, like implode in this case.

score 2 · Answer 6 · answered Aug 20 '10 at 17:52

2

Try

$string = '';
foreach( $employeeAges as $key => $value){
    $string .= $value.',';
}

With $string = $value.','; you are overwriting $string every time, so you only get the last value.

answered Aug 20 '10 at 17:52

Zaki

1,101
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score 1 · Answer 7 · answered Aug 24 '15 at 11:34

Try this echo must be inside then {} became ok

    $employeeAges;
    $employeeAges["Lisa"] = "28";
    $employeeAges["Jack"] = "16";
    $employeeAges["Ryan"] = "35";
    $employeeAges["Rachel"] = "46";
    $employeeAges["Grace"] = "34";

    foreach( $employeeAges as $key => $value){
        $string = $value.',';
        echo $string; 

    }

    // result - 28,16,35,46,34, - as the result

or other way

foreach( $employeeAges as $key => $value){
            $string .= $value.',';

        }
            echo $string;

score 1 · Answer 8 · answered Aug 20 '10 at 17:50

1

$string .= $value.',';

Use the concatenation, put a dot before the equal sign.

You can use this verbose syntax:

$string = $string . $value . ',';

answered Aug 20 '10 at 17:50

Sarfraz

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score 1 · Answer 9 · answered Jun 20 '17 at 12:53

Input:

    $array = [1,2,3,4]

Save all data in one string:

    $string = "";
    foreach( $array as $key => $value){
        $string .= $value.',';
    }

Output:

    $string = '1,2,3,4,'

Remove last comma:

    $string =  rtrim($string, ',');

Output:

    $string = '1,2,3,4'

More information about:

concatenation;

rtrim.

php foreach: put each of the loop result in one variable

9 Answers9