PHP self-study no00014 predefined constants baike.baidu.com@v 00 anmin0001

<?php echo &#39;当前文件路径：&#39;;
echo __FILE__.&#39;<br />';				//文件名
echo '当前行数：';
echo __LINE__.'<br>';				//编程里行数
echo '该PHP版本号：';
echo PHP_VERSION.'<br>';			//PHP版本
echo '操作系统：';
echo PHP_OS;						//PHP操作系统

?>

The above introduces the PHP self-study no00014 predefined constants, including the 0001 content. I hope it will be helpful to friends who are interested in PHP tutorials.