What are the potential pitfalls of using strpos with integers versus strings in PHP?

When using strpos with integers in PHP, there is a potential pitfall because strpos expects the haystack parameter to be a string. If an integer is passed instead, PHP will automatically convert it to a string, potentially leading to unexpected results. To avoid this issue, always ensure that the haystack parameter is a string when using strpos.

// Incorrect usage with an integer
$haystack = 12345;
$needle = 3;
$position = strpos($haystack, $needle); // This will convert $haystack to a string and may not return the expected result

// Corrected usage with a string
$haystack = "12345";
$needle = "3";
$position = strpos($haystack, $needle); // This will correctly find the position of the needle in the haystack