What is the correct syntax for incrementing a counter variable in PHP and how can it be implemented in a guessing game script?

To increment a counter variable in PHP, you can use the increment operator "++" after the variable name. This operator adds 1 to the current value of the variable. In a guessing game script, you can use a counter variable to keep track of the number of guesses a player has made.

// Initialize counter variable
$counter = 0;

// Increment the counter variable each time a guess is made
$counter++;

// Display the current value of the counter variable
echo "Number of guesses: " . $counter;