php跨平台总结 常用预定义常量
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<?php /** * 获得用户操作系统的换行符 * * @access public * @return string */ function get_crlf() { /* LF (Line Feed, 0x0A, \N) 和 CR(Carriage Return, 0x0D, \R) */ if (stristr($_SERVER['HTTP_USER_AGENT'], 'Win')){ $the_crlf = '\r\n'; }elseif (stristr($_SERVER['HTTP_USER_AGENT'], 'Mac')){ $the_crlf = '\r'; // for old MAC OS }else{ $the_crlf = '\n'; } return $the_crlf; } // *nix echo DIRECTORY_SEPARATOR; // / echo PHP_SHLIB_SUFFIX; // so echo PATH_SEPARATOR; // : // Win* echo DIRECTORY_SEPARATOR; // \ echo PHP_SHLIB_SUFFIX; // dll echo PATH_SEPARATOR; // ; ?> ?
if ?( strtoupper ( substr (PHP_OS,?0,?3))?===? 'WIN' )?{? ?? 得到操作系统类型
DEFAULT_INCLUDE_PATH? 得到php.ini中配置的include_path