How can debugging tools like var_dump() and print_r() help in identifying issues with string comparisons in PHP?

When comparing strings in PHP, issues can arise due to differences in whitespace characters, character encoding, or unexpected characters. Debugging tools like var_dump() and print_r() can help by displaying the actual content of the strings being compared, making it easier to spot any discrepancies. By using these tools, you can identify the root cause of the issue and adjust your comparison logic accordingly.

$string1 = "Hello World";
$string2 = "Hello World ";

var_dump($string1);
var_dump($string2);

// Perform string comparison after identifying any differences
if(trim($string1) === trim($string2)) {
    echo "Strings are equal after trimming whitespace.";
} else {
    echo "Strings are not equal.";
}