What potential issue can arise when using explode() function in PHP, as seen in the provided code snippet?

The potential issue that can arise when using the explode() function in PHP is when the delimiter used is not found in the string being exploded. This can result in an error or unexpected behavior in the code. To solve this issue, it is important to check if the delimiter exists in the string before using explode(). One way to do this is by using the strpos() function to check if the delimiter is present in the string before exploding it.

$string = "Hello World";
$delimiter = ",";
if(strpos($string, $delimiter) !== false){
    $parts = explode($delimiter, $string);
    print_r($parts);
} else {
    echo "Delimiter not found in the string.";
}