Verify value in a PHP array and reasign result to the variable - php

Question

I would be much grateful if you could help in solving this PHP issue.
I needs to verify the value of $fl_blackriver, $fl_flacq, etc...
if value=="", assign 0 to this value
update the corresponding variable with the updated value
$fl_blackriver = $_REQUEST['fl_blackriver'];
$fl_flacq = $_REQUEST['fl_flacq'];
$fl_grandport = $_REQUEST['fl_grandport'];
$fl_moka = $_REQUEST['fl_moka'];
$fl_pamplemousses = $_REQUEST['fl_pamplemousses'];
$fl_plaineswilhems = $_REQUEST['fl_plaineswilhems'];
$fl_portlouis = $_REQUEST['fl_portlouis'];
$fl_rivieredurempart = $_REQUEST['fl_rivieredurempart'];
$fl_savanne = $_REQUEST['fl_savanne'];
$fl_finalize = $_REQUEST['fl_finalize'];
$district = array($fl_blackriver,$fl_flacq,$fl_grandport,$fl_moka,$fl_pamplemousses,$fl_plaineswilhems,$fl_portlouis,$fl_rivieredurempart,$fl_savanne,$fl_finalize);
$arrlength = count($district);
for($x = 0; $x < $arrlength; $x++)
{
if ($district[$x]=="")
$district[$x] = "0";
}

Answer 1

This doesn't look nice but it should do the trick:
$fl_blackriver = $_REQUEST['fl_blackriver'];
$fl_flacq = $_REQUEST['fl_flacq'];
$fl_grandport = $_REQUEST['fl_grandport'];
$fl_moka = $_REQUEST['fl_moka'];
$fl_pamplemousses = $_REQUEST['fl_pamplemousses'];
$fl_plaineswilhems = $_REQUEST['fl_plaineswilhems'];
$fl_portlouis = $_REQUEST['fl_portlouis'];
$fl_rivieredurempart = $_REQUEST['fl_rivieredurempart'];
$fl_savanne = $_REQUEST['fl_savanne'];
$fl_finalize = $_REQUEST['fl_finalize'];
$district = array(
'fl_blackriver' => $fl_blackriver,
'fl_flacq' => $fl_flacq,
'fl_grandport' => $fl_grandport,
'fl_moka' => $fl_moka,
'fl_pamplemousses' => $fl_pamplemousses,
'fl_plaineswilhems' => $fl_plaineswilhems,
'fl_portlouis' => $fl_portlouis,
'fl_rivieredurempart' => $fl_rivieredurempart,
'fl_savanne' => $fl_savanne,
'fl_finalize' => $fl_finalize
);
foreach ($district as $key => $value) {
if ($value === "") {
$$key = "0";
}
}

Answer 2

You can do that using ternary operator like this,
$fl_blackriver = !empty($_REQUEST['fl_blackriver']) ? $_REQUEST['fl_blackriver'] : 0 ;
$fl_flacq = !empty($_REQUEST['fl_flacq']) ? $_REQUEST['fl_flacq'] : 0 ;
$fl_grandport = !empty($_REQUEST['fl_grandport']) ? $_REQUEST['fl_grandport'] : 0 ;
$fl_moka = !empty($_REQUEST['fl_moka']) ? $_REQUEST['fl_moka'] : 0 ;
$fl_pamplemousses = !empty($_REQUEST['fl_pamplemousses']) ? $_REQUEST['fl_pamplemousses'] : 0 ;
$fl_plaineswilhems = !empty($_REQUEST['fl_plaineswilhems']) ? $_REQUEST['fl_plaineswilhems'] : 0 ;
$fl_portlouis = !empty($_REQUEST['fl_portlouis']) ? $_REQUEST['fl_portlouis'] : 0 ;
$fl_rivieredurempart = !empty($_REQUEST['fl_rivieredurempart']) ? $_REQUEST['fl_rivieredurempart'] : 0 ;
$fl_savanne = !empty($_REQUEST['fl_savanne']) ? $_REQUEST['fl_savanne'] : 0 ;
$fl_finalize = !empty($_REQUEST['fl_finalize']) ? $_REQUEST['fl_finalize'] : 0 ;

Answer 3

You can try the following process. It will check the value whether it is empty or not. If the value is empty then it will set the value to 0. Otherwise it will take the requested value.
$fl_blackriver = (isset($_REQUEST['fl_blackriver'])) ? $_REQUEST['fl_blackriver'] : 0;
$fl_flacq = (isset($_REQUEST['fl_flacq'])) ? $_REQUEST['fl_flacq'] : 0;
$fl_grandport = (isset($_REQUEST['fl_grandport'])) ? $_REQUEST['fl_grandport'] : 0;
$fl_moka = (isset($_REQUEST['fl_moka'])) ? $_REQUEST['fl_moka'] : 0;
$fl_pamplemousses = (isset($_REQUEST['fl_pamplemousses'])) ? $_REQUEST['fl_pamplemousses'] : 0;
$fl_plaineswilhems = (isset($_REQUEST['fl_plaineswilhems'])) ? $_REQUEST['fl_plaineswilhems'] : 0;
$fl_portlouis = (isset($_REQUEST['fl_portlouis'])) ? $_REQUEST['fl_portlouis'] : 0;
$fl_rivieredurempart = (isset($_REQUEST['fl_rivieredurempart'])) ? $_REQUEST['fl_rivieredurempart'] : 0;
$fl_savanne = (isset($_REQUEST['fl_savanne'])) ? $_REQUEST['fl_savanne'] : 0;
$fl_finalize = (isset($_REQUEST['fl_finalize'])) ? $_REQUEST['fl_finalize'] : 0;
$district = array($fl_blackriver,$fl_flacq,$fl_grandport,$fl_moka,$fl_pamplemousses,$fl_plaineswilhems,$fl_portlouis,$fl_rivieredurempart,$fl_savanne,$fl_finalize);

Answer 4

foreach($_REQUEST as $key => $value) {
if (! is_numeric($value)) {
$_REQUEST[$key] = 0;
}}
extract($_REQUEST);

Answer 5

I would do that in a variadic function returning an array when multiple arguments are given or source of any type when only one argument is present.
function request(string ...$names)
{
foreach ($names as &$v)
$v = '' === ($v = $_REQUEST[$v] ?? 0) ? 0 : $v;
return 1 === count($names) ? $names[0] : $names;
}
[$fl_blackriver, $fl_flacq] = request('fl_blackriver', 'fl_flacq');
$fl_grandport = request('fl_grandport');
$district = request('fl_blackriver','fl_flacq','fl_grandport','fl_moka','fl_pamplemousses','fl_plaineswilhems','fl_portlouis','fl_rivieredurempart','fl_savanne','fl_finalize');
var_dump($fl_blackriver, $fl_flacq, $fl_grandport);
var_dump($district);
To get key/value pairs in an associative array:
function request_assoc(string ...$names) : array
{
$names = array_flip($names);
foreach ($names as $k => &$v)
$v = '' === ($v = $_REQUEST[$k] ?? 0) ? 0 : $v;
return $names;
}