Could someone explain me the following?
$a="";
$a="" ? "" : "muh";
echo $a;
// returns muh
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Blank string evaluates to false.Progrock– Progrock2017-12-09 08:50:07 +00:00Commented Dec 9, 2017 at 8:50
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Ok, that's the answer. Thanks!PeMa– PeMa2017-12-09 09:33:22 +00:00Commented Dec 9, 2017 at 9:33
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1 Answer
It looks you are trying to use Comparison operator ==, but instead you are using an Assignment operator =
Your code is trying to assign $a the result of the expression "" ? "" : "muh". An empty string is evaluated as false and $a is assgined the value of muh.
Let's put some parentheses to make it more obvious:
//$a equals (if empty string then "" else "muh")
$a = ("" ? "" : "muh");
echo $a; // muh
//$a equals (if $a is equal to empty string then "" else muh)
$a = ($a == "" ? "" : "muh");
echo $a; //
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