I have for loop in which I have to check that the array that I am retriving should not empty. And if empty then don't display that field.
$checkboxes = array();
$text = array();
$Enhanced = array();
$Search = array();
$Landing = array();
$spotlights="";
for ($i = 1; $i <= 20; $i++) {
$checkboxes[$i] = $_POST[$i];
$text[$i] = $_POST[$i.'t'];
}
for ($p = 1; $p <= 20; $p++) {
$checkboxes[$p] = $_POST[$p];
$Enhanced[$p] = $_POST['Enhanced'.$p];
}
for ($q = 1; $q <= 20; $q++) {
$checkboxes[$q] = $_POST[$q];
$Search[$q] = $_POST['Search'.$q];
}
for ($r = 1; $r <= 20; $r++) {
$checkboxes[$r] = $_POST[$r];
$Landing[$r] = $_POST['Landing'.$r];
}
for ($j = 1; $j <= 20; $j++) {
if($checkboxes[$j]!="")
{
$spotlights=$spotlights."<strong>".$checkboxes[$j]."</strong><br>".$Enhanced[$j]."<br>".$Search[$j]."<br>".$Landing[$j]."<br>".$text[$j]."<br><br>";
}
}
echo $spotlights;
In above code, $Enhanced[$j], $Search[$j], $Landing[$j] may or may not be empty as these are checkboxes. If any of them is empty i don't want to print that. In above case if any of three field empty then it display <br/> which i don't want.
If I check them one by one or combination of them then my code will be longer. How do I check in smarter way? How should I write the line of $spotlights=... so that it will display only non empty variables($Enhanced[$j], $Search[$j], $Landing[$j])?
I have tried bolow which is not working. using functions:
for ($j = 1; $j <= 20; $j++) {
if($checkboxes[$j]!="")
{
$spotlights=$spotlights."<strong>".$checkboxes[$j]."</strong>".enhanced($j).search($j).landing($j)."<br>".$text[$j]."<br><br>";
}
}
function enhanced($j) {
if($Enhanced[$j]!="")
{
return "<br/>".$Enhanced[$j];
}
}
function search($j) {
if($Search[$j]!="")
{
return "<br/>".$Search[$j];
}
}
function landing($j) {
if($Landing[$j]!="")
{
return "<br/>".$Landing[$j];
}
}
above code not displaying values of $Enhanced[$j], $Search[$j], $Landing[$j]
checking values independently
for ($j = 1; $j <= 20; $j++) {
if($checkboxes[$j]!="")
{
$spotlights .= $spotlights."<strong>".$checkboxes[$j]."</strong>";
if($Enhanced[$j]!="")
{
$spotlights .= "<br>".$Enhanced[$j];
}
if($Search[$j]!="")
{
$spotlights .= "<br>".$Search[$j];
}
if($Landing[$j]!="")
{
$spotlights .= "<br>".$Landing[$j];
}
$spotlights .= "<br>".$text[$j]."<br><br>";
}
values are getting repeated by using above code.
I don't think checking them individually will be a lot of trouble, as there are only three of them, but if you want to keep it one line, the line where you define $spotlights with this:
$spotlights=$spotlights."<strong>".$checkboxes[$j]."</strong>"
.($Enhanced[$j] != "" ? "<br>".$Enhanced[$j] : "")
.($Search[$j] != "" ? "<br>".$Search[$j] : "")
.($Landing[$j] != "" ? "<br>".$Landing[$j] : "")
."<br>".$text[$j]."<br><br>";
Hope this helped.
Use array_filter.
Something like that:
$checkboxes = array_filter($checkboxes);
foreach($checkboxes as $checkbox)
{
$j = array_search($checkbox, $checkboxes)
$spotlights=$spotlights."<strong>".$checkboxes[$j]."</strong><br>".$Enhanced[$j]."<br>".$Search[$j]."<br>".$Landing[$j]."<br>".$text[$j]."<br><br>";
echo $spotlights;
}
array_filter will remove all NULL, false or '' from array, but will keep the position, so if you have in checkbox[3] something different, in checkboxes after array_filter will be on position 3. doesn't matter if on position 2 was NULL.