PHP how to loop through a post array - php

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.

Answer 1

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.

Answer 2

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;
}
}

Answer 3

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

Answer 4

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.

Answer 5

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";
});

Answer 6

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>";
}