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Asked: 2026-05-16T20:56:04+00:00

I am creating an application that takes a swipe from a magnetic reader. The

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I am creating an application that takes a “swipe” from a magnetic reader. The string that is returned from the magnetic reader has a line break after the text. Can I use php trim() to remove the linebreak (and obviously any pre or post whitespace)?

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  1. Editorial Team

    Yes it does, see the manual:

    This function returns a string with whitespace stripped from the beginning and end of str. Without the second parameter, trim() will strip these characters:

    " " (ASCII 32 (0x20)), an ordinary space.
    "\t" (ASCII 9 (0x09)), a tab.
    "\n" (ASCII 10 (0x0A)), a new line (line feed).
    "\r" (ASCII 13 (0x0D)), a carriage return.
    "\0" (ASCII 0 (0x00)), the NUL-byte.
    "\x0B" (ASCII 11 (0x0B)), a vertical tab.

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