PHP line-Wrapping processing

Line break

UNIX series with \ n

Windows series with \ r \ n

Mac with \ r

PHP can be replaced with Php_eol to improve code-level portability

Such as:

<? PHP     Echo Php_eol ;     // the Windows platform is equivalent to    echo "\ r \ n";    Unix\linux platform equivalent to    echo "\ n";    The Mac platform is equivalent to    echo "\ r";

Text entered through the HTML <textarea> box, if you want to remove line breaks, you can use Htmlspecialchars ($STR) to remove line breaks

Similar to what is commonly used

Directory_separator

You can use the function get_defined_constants () to get all the PHP constants

<? PHP     Print_r (get_defined_constants()); // get_defined_constants () returns all constant arrays

PHP line-Wrapping processing