What are the best practices for handling errors related to delimiters in PHP regular expressions?

When dealing with delimiters in PHP regular expressions, it is important to choose delimiters that are not present in the pattern itself to avoid syntax errors. One common delimiter is the forward slash (/), but if your pattern contains forward slashes, you should choose a different delimiter such as a hash symbol (#) or a tilde (~). This will prevent errors and ensure that your regular expression functions correctly.

// Example of using a different delimiter to avoid conflicts with forward slashes in the pattern
$pattern = '/\/example\/';
$pattern = '#/example/#';