Function $_POST return value from array parameter - php

Question

I had this response from method post
array(7) {
["enable"]=>
array(2) {
[0]=>
string(2) "on"
[1]=>
string(2) "on"
}
["value"]=>
array(2) {
[0]=>
string(8) "R$ 10,00"
[1]=>
string(8) "R$ 10,00"
}
["zip_code"]=>
array(2) {
[0]=>
string(9) "57200-970"
[1]=>
string(9) "57200-990"
}
["address"]=>
array(2) {
[0]=>
string(28) "Avenida Floriano Peixoto"
[1]=>
string(33) "Povoado Tabuleiro dos Negros"
}
["neighborhood"]=>
array(2) {
[0]=>
string(6) "Centro"
[1]=>
string(4) "Bairro Vermelho"
}
["city"]=>
array(2) {
[0]=>
string(6) "Penedo"
[1]=>
string(6) "Penedo"
}
["state"]=>
array(2) {
[0]=>
string(2) "AL"
[1]=>
string(2) "AL"
}
}
I need first use the foreach to get the $_POST['active'] and get value from another arrays index
foreach (Request::post('enable') as $k => $v) {
print Request::post(array("zip_code", $k)) . "\n";
// I hope same result of $_POST['zip_code'][$k]
}
the real problem is my function
public static function post($key, $clean = false) {
$result = is_array($key) ? array_search($key, $_POST) : $_POST[$key];
if (!empty($result)) {
return ($clean) ? trim(strip_tags($result)) : $result;
}
return NULL;
}
if param key is an array get value from this key array
for example $_POST['a']['b']['c']
[EDIT]
I improve the function, thanks #mickmackusa
public static function post($key, $clean = false) {
$focus = $_POST;
if (is_array($key)) {
foreach ($key as $k) {
if (!isset($focus[$k])) {
return NULL;
}
$focus = $focus[$k];
if (!is_array($focus)) {
$result = $focus;
}
}
} else {
$result = empty($focus[$key]) ? NULL : $focus[$key];
}
return ($clean ? trim(strip_tags($result)) : $result);
}

Answer 1

I think line1 inside post() is fouling things up. Depending on $key's type, you are declaring $result's value as a key or a value. But then seemingly treating both possibilities as a value in the next condition and returning it.
public static function post($key, $clean=false) {
$result = is_array($key) ? array_search($key, $_POST) : $_POST[$key];
// if $key is an array, then $result is the key of the found value within $POST or FALSE if not found
// if $key is not an array, then $result is the value of $_POST[$key]
if (!empty($result)) {
return ($clean) ? trim(strip_tags($result)) : $result;
}
return NULL;
}
The !empty condition is checking for NOT falsey values in $result.
See all falsey values # empty() manual, including 0 which can be a totally legitimate index/key, and more.
Instead, I think you want to use:
public static function post($key,$clean=false){
$focus=$_POST;
foreach($key as $k){
if(!isset($focus[$k])){
return NULL;
}else{
$focus=$focus[$k];
if(!is_array($focus)){
$result=$focus;
}
}
}
return ($clean?trim(strip_tags($result)):$result);
}