[nycphp-talk] What does this code do?
dcech at phpwerx.net
Mon Mar 3 14:51:42 EST 2008
Dan Cech wrote:
> Steve Manes wrote:
>> -- rada -- wrote:
>>> supposedly converts Windows CRLF to Unix LF:
>>> $str =~ s/\r\n/\n/g;
>> Perl sed function.
>> There's no need to use a regex function unless you have a regex
>> pattern to match. If you just need to remove the carriage returns,
>> this will be two or three times faster:
>> $str = str_replace("\r", "", $str);
> While this is indeed faster than using preg, it suffers from a slightly
> different version of the same bug in the original version. On Mac, a
> newline is \r, so this will remove all newlines from a mac-formatted
> string...not what you want. The original version is only marginally
> better in that it leaves the mac newlines unconverted.
> A simple and efficient way to convert both windows and mac newlines to
> the unix style is:
> $str = str_replace(array("\r\n","\r"),"\n",$str);
> This will first replace all windows newline sequences with the unix
> version, then any mac-style carriage returns.
Before the flames begin, let me assure the Mac users out there that I
meant to say *old* Mac newlines are simply \r. OSX uses unix-style \n
More information about the talk