What strategies can PHP developers employ to troubleshoot and debug issues related to character counting functions like strlen in their code?

When troubleshooting character counting functions like strlen in PHP, developers can start by checking the input data to ensure it is in the expected format. They can also use var_dump or print_r to inspect the output of the strlen function and verify if it is returning the correct count. Additionally, developers can use echo statements to display intermediate values and debug information to track the flow of the code.

// Example code snippet to troubleshoot character counting function strlen

$input = "Hello, World!"; // Sample input data
$length = strlen($input); // Get the length of the input string

// Check the input data
var_dump($input);

// Check the output of strlen function
var_dump($length);

// Display debug information
echo "Length of input string: " . $length;