Why Does My Nested PHP Ternary Operator Return Only 'city-4'?

Nesting Ternary Operators in PHP: Troubleshooting an Invalid Conditional Structure

Your code aims to assign a value to the $Myprovince variable based on the value of $province using a series of nested ternary operators. However, you encountered an issue where all fields returned the value "city-4."

The Problem

The issue lies in the nesting of the ternary operators. In your original code, each ternary operator was independent, and the evaluation proceeded from left to right. However, for the subsequent conditions to be evaluated correctly, you need to group them using parentheses.

Solution Using Nested Parentheses

To fix the code, you need to enclose each group of ternary operators within parentheses, as demonstrated below:

$province = 7;
$Myprovince = (
    ($province == 6) ? "city-1" :
    (($province == 7) ? "city-2" :
    (($province == 8) ? "city-3" :
    (($province == 30) ? "city-4" : "out of borders")))
);

By grouping the ternary operators using parentheses, the evaluation now follows the correct order of precedence, and the $Myprovince variable will be assigned the appropriate value based on the $province value.

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