What are the advantages and disadvantages of using strcmp() versus '==' for string comparison in PHP?

When comparing strings in PHP, it is important to consider the differences between using strcmp() and '==' for comparison. strcmp() is a function specifically designed for comparing strings in PHP and is more versatile as it can handle cases where strings are not exactly equal but have different cases or special characters. On the other hand, using '==' for string comparison only checks if the two strings are exactly equal, without considering case sensitivity or special characters. Therefore, strcmp() is generally preferred for more accurate and reliable string comparisons.

// Using strcmp() for string comparison
$string1 = "Hello";
$string2 = "hello";

if (strcmp($string1, $string2) === 0) {
    echo "The strings are equal.";
} else {
    echo "The strings are not equal.";
}