What are some potential pitfalls of using nl2br() in PHP for generating line breaks in BBCode translation?

Using nl2br() in PHP for generating line breaks in BBCode translation can lead to unintended line breaks being inserted in places where they shouldn't be, such as within BBCode tags or URLs. To solve this issue, you can first convert line breaks to a placeholder string before translating the BBCode, and then replace the placeholder string with the appropriate line break tags after the translation is complete.

// Example code snippet to handle line breaks in BBCode translation
$text = "This is a text with line breaks.\nOne line.\nAnother line.";
$bbcode = translateBBCode($text);

// Replace line breaks with a placeholder string
$text = str_replace("\n", "[[LINEBREAK]]", $text);

// Translate BBCode
$translated = translateBBCode($text);

// Replace placeholder string with line break tags
$translated = str_replace("[[LINEBREAK]]", "<br>", $translated);

echo $translated;

function translateBBCode($text) {
    // Implement your BBCode translation logic here
    return $text;
}