Need explanation of PHP code

[jinsatkilife]

anyone able to explain the code?

<label for="category--' . $category . '" class="label label--checkbox">
<div id="option--'. $category .'"' . (($category == 'DRSS' || $category == 'SKTS') ? (($women_selected || !$men_selected) ? '' : ' style="display:none;"') : '') . '>

 

[AwfullySmart]

https://www.php.net/manual/en/langu...son.php#language.operators.comparison.ternary

if-else shorthand (ternary operators)

 

[davidktw]

<label for="category--' . $category . '" class="label label--checkbox">
<div id="option--'. $category .'"' . (($category == 'DRSS' || $category == 'SKTS') ? (($women_selected || !$men_selected) ? '' : ' style="display:none;"') : '') . '>

I don't think those PHP codes above are complete on their own.

For example this fragment of codes

<label for="category--' . $category . '" class="label label--checkbox">

It is more likely in this form

$var = '<label for="category--' . $category . '" class="label label--checkbox">';

Thus dependong on the value of the variable $category, if it is 'DRSS',
then the following similar code below will yield the same result_metadata()

$var = '<label for="category--DRSS" class="label label--checkbox">';

Another way of writing the above in a more readable manner is using PHP's variable interpolation, hence you can rewrite it as follows

$var = "<label for=\"category--$category\" class=\"label label--checkbox\">";

Since normally HTML strings can be single quoted or double quoted and the meaning is the same,
thus you can avoid escaping double quotes in a PHP string as follows

$var = "<label for='category--$category' class='label label--checkbox'>";

For the other fragment,

<div id="option--'. $category .'"' . (($category == 'DRSS' || $category == 'SKTS') ? (($women_selected || !$men_selected) ? '' : ' style="display:none;"') : '') . '>

It should be of this form too

$var = '<div id="option--'. $category .'"' . (($category == 'DRSS' || $category == 'SKTS') ? (($women_selected || !$men_selected) ? '' : ' style="display:none;"') : '') . '>';

The following code is analogous

if ($category == 'DRSS' || $category == 'SKTS') {
    if ($women_selected || !$men_selected) {
        $var = '<div id="option--'. $category .'">';
        // or using variable interpolation and switching to wrapping double quotes
        // $var = "<div id='option--$category'>";
    }
    else {
        $var = '<div id="option--'. $category .'" style="display:none;">';
        // or using variable interpolation and switching to wrapping double quotes
        // $var = "<div id='option--$category' style='display:none;'>";
    }
}
else {
    $var = '<div id="option--'. $category .'">';
    // or using variable interpolation and switching to wrapping double quotes
    // $var = "<div id='option--$category'>";
}

 

[jinsatkilife]

I don't think those PHP codes above are complete on their own.

yes, i tried to post my full code but encounter error 403

waste 1 hour trying to figure out what was this error before I just give up

and thanks for the explanation!

I think my issue was 1) the nested ternary operator made it much complicated to decipher;
if its like if else statement, its much easier to see and understand

and 2) the dynamic variable naming

i learnt ternary from javascript; didn't know it applies here also in php