What potential issues can arise when transferring PHP scripts between different operating systems like Windows and Mac?

One potential issue that can arise when transferring PHP scripts between different operating systems like Windows and Mac is line endings. Windows uses CRLF (Carriage Return Line Feed) for line endings, while Mac uses LF (Line Feed) only. This can cause syntax errors or unexpected behavior in the script. To solve this issue, you can use a text editor that supports changing line endings, or use a tool like `dos2unix` to convert line endings before transferring the script.

// Convert line endings from CRLF to LF
$scriptContent = file_get_contents('script.php');
$scriptContent = str_replace("\r\n", "\n", $scriptContent);
file_put_contents('script.php', $scriptContent);