Question

what does this structure mean:

$var = isset($var_1) ? $var_1 : $var_2;

I came across it and of course with other values, not $va, $var_1 and $var_2.

thanks.

Answer 1

This is the ternary operator, and means the same as:

if (isset($var_1)) {
    $var = $var_1;
}
else {
    $var = $var_2;
}

The ternary operator provides a short-hand method of creating simple if/else statements.