What common mistake did the user make in the PHP code provided for the counter, and how was it corrected by other forum members?

The common mistake in the PHP code provided for the counter is that the variable $count is not being properly updated within the function. Other forum members corrected this by using the global keyword to access and modify the global variable $count within the function.

<?php
$count = 0;

function incrementCounter() {
    global $count;
    $count++;
}

// Call the function to increment the counter
incrementCounter();

// Display the updated count
echo "Counter: " . $count;
?>