PHP how to loop through a post array

Question

I need to loop through a post array and sumbit it.

#stuff 1
<input type="text" id="stuff" name="stuff[]" />
<input type="text" id="more_stuff" name="more_stuff[]" />
#stuff 2
<input type="text" id="stuff" name="stuff[]" />
<input type="text" id="more_stuff" name="more_stuff[]" />

But I don't know where to start.

Same way you loop through every other array you've come across... — Ignacio Vazquez-Abrams, Apr 21 '12 at 20:36
Read some basic documentation, such as http://php.net/manual/en/language.variables.external.php and http://php.net/manual/en/control-structures.foreach.php. — Felix Kling, Apr 21 '12 at 20:44

score 40 · Accepted Answer · edited Jan 17 '14 at 20:06

40

This is how you would do it:

foreach( $_POST as $stuff ) {
    if( is_array( $stuff ) ) {
        foreach( $stuff as $thing ) {
            echo $thing;
        }
    } else {
        echo $stuff;
    }
}

This looks after both variables and arrays passed in $_POST.

edited Jan 17 '14 at 20:06

Freesnöw

28,081
30
87
133

answered Apr 21 '12 at 20:37

gimg1

1,099
10
23

1

problem is what about more_stuff[]? – user1324780 Apr 21 '12 at 20:40
2
`print_r($_POST)` is much easier. If you really want, you can even throw it between some `
```
` tags
```
– Mr Wednesday Feb 27 '13 at 00:48
1

nice solution but theres a semicolon missing after the first echo :P – gosua May 05 '13 at 19:39

score 29 · Answer 2 · edited Sep 10 '19 at 06:36

29

Likely, you'll also need the values of each form element, such as the value selected from a dropdown or checkbox.

 foreach( $_POST as $stuff => $val ) {
     if( is_array( $stuff ) ) {
         foreach( $stuff as $thing) {
             echo $thing;
         }
     } else {
         echo $stuff;
         echo $val;
     }
 }

edited Sep 10 '19 at 06:36

theduck

2,529
13
16
23

answered Sep 16 '12 at 15:23

glassfish

701
1
9
14

score 7 · Answer 3 · edited Feb 11 '17 at 23:01

7

for ($i = 0; $i < count($_POST['NAME']); $i++)
{
   echo $_POST['NAME'][$i];
}

Or

foreach ($_POST['NAME'] as $value)
{
    echo $value;
}

Replace NAME with element name eg stuff or more_stuff

edited Feb 11 '17 at 23:01

Bineesh

486
1
5
18

answered Apr 21 '12 at 20:37

Sarfraz

367,681
72
526
573

1

$i < count($_POST['NAME']); would be more correct, no? – jeffkee Dec 22 '15 at 06:37

score 3 · Answer 4 · edited Oct 26 '18 at 09:17

3

I have adapted the accepted answer and converted it into a function that can do nth arrays and to include the keys of the array.

function LoopThrough($array) {
    foreach($array as $key => $val) {
        if (is_array($key))
            LoopThrough($key);
        else 
            echo "{$key} - {$val} <br>";
    }
}

LoopThrough($_POST);

Hope it helps someone.

edited Oct 26 '18 at 09:17

Eric Aya

69,000
34
174
243

answered Oct 26 '18 at 08:32

RealSollyM

1,450
1
21
33

Ivan Buttinoni · Answer 5 · 2014-01-18T09:40:00.117

2

You can use array_walk_recursive and anonymous function, eg:

$sweet = array('a' => 'apple', 'b' => 'banana');
$fruits = array('sweet' => $sweet, 'sour' => 'lemon');
array_walk_recursive($fruits,function ($item, $key){
    echo "$key holds $item <br/>\n";
});

follows this answer version:

array_walk_recursive($_POST,function ($item, $key){
    echo "$key holds $item <br/>\n";
});

edited Jan 18 '14 at 09:40

answered Jan 17 '14 at 20:18

Ivan Buttinoni

3,942
1
21
37

score 1 · Answer 6 · answered May 31 '18 at 22:33

1

For some reason I lost my index names using the posted answers. Therefore I had to loop them like this:

foreach($_POST as $i => $stuff) {
  var_dump($i);
  var_dump($stuff);
  echo "<br>";
}

answered May 31 '18 at 22:33

Pete

1,181
11
18

PHP how to loop through a post array

6 Answers6

Linked

Related