How does the ternary operator work in PHP and how is it used in array sorting?

The ternary operator in PHP is a shorthand way of writing an if-else statement. It consists of a condition followed by a question mark, then an expression to evaluate if the condition is true, followed by a colon and an expression to evaluate if the condition is false. To use the ternary operator in array sorting, you can compare two elements of the array within the comparison function passed to array sorting functions like `usort()` or `uasort()`. You can use the ternary operator within the comparison function to determine the order of elements based on a specific condition. 

// Example of using ternary operator in array sorting
$numbers = [5, 2, 8, 1, 3];

usort($numbers, function($a, $b) {
    return $a < $b ? -1 : 1;
});

print_r($numbers);

Keywords

ternary operator PHP array sorting conditional expression comparison operator

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