PHP Loop through array with no index names - php

Question

In PHP I have this structure of Array (some are empty, some not, some are multiple items):
Array
(
[0] => Array
(
)
[1] => Array
(
[0] => 16534
)
[2] => Array
(
)
[3] => Array
(
[0] => 16532
[1] => 16533
)
[4] => Array
(
)
[5] => Array
(
[0] => 14869
)
}
I want to loop through this array, so as the result I get only the numbers (all of them).
I tried it this way:
foreach ($myarray as $item) {
echo '<pre>' . print_r($item) . '</pre>';
// $result[] = $this->myMethod($item);
}
So in foreach I want to use all the items from array in my method.
However when I echo the $item in the loop, I have something like this:
Array ( )
Array ( [0] => 16534 )
Array ( )
Array ( [0] => 16532 [1] => 16533 )
Array ( )
Array ( [0] => 14869 )
So still arrays (also the empty ones), and not numbers.
Can you please help with this?
UPDATE: I just noticed, some of the arrays looks like this:
[6] => Array
(
[0] => Array
(
[id] => 269
[hours] => 21.0
)
)
[7] => Array
(
[0] => Array
(
[0] => Array
(
[id] => 2
[hours] => 12.0
)
[1] => Array
(
[id] => 7
[hours] => 24.0
)
)
[1] => Array
(
[0] => Array
(
[id] => 2
[hours] => 5.0
)
[1] => Array
(
[id] => 7
[hours] => 0.583
)
)
)
but here the solution works not.
This one seems working but it is now brutal foreach in foreach solution:
foreach ($myarray as $item2) {
foreach ($item2 as $key2 => $val2) {
if (isset($val2)) {
foreach ($val2 as $key4 => $val4) {
echo $val4['id'].',';
}
}
}
}

Answer 1

Just merge the array which will also remove the empties:
foreach(array_merge(...$myarray) as $item) {
// echo '<pre>' . print_r($item) . '</pre>';
$result[] = $this->myMethod($item);
}
This will also work and may be faster:
$result = array_map([$this, 'myMethod'], array_merge(...$myarray));
If you have an old PHP version you'll have to use array() instead of [] and:
call_user_func_array('array_merge', $myarray)

Answer 2

You are only looping through the main array.That's the reason why you are getting an array when you are printing the result set.(because those values are stored in sub arrays and you are not looping them.)
And to remove the sub arrays with empty values I'll use isset() so that you will get only the values.
Change your code into this.
foreach ($myarray as $item) {
foreach($item as $key=>$val){
if(isset($val){
$values[] = $val;
// $result[] = $this->myMethod($values);
}
}
}