php-constant

<?php

/**
 * @Author: cyany_blue
 * @Date:   2018-11-24 10:30:15
 * @Last Modified by:   cyany_blue
 * @Last Modified time: 2018-11-24 10:53:36
 */
define("name", ‘just is a constant‘);
echo name."<br>";
echo constant(‘name‘).‘<br>‘;
echo __LINE__.‘<br>‘;  //The current line number 
echo __FILE__.‘<br>‘;//the current filename
function abc(){

    echo __FUNCTION__.‘<br>‘;//echo function name
}
abc();
class a{
    function __construct(){
        echo __CLASS__.‘<br>‘; //current class name
        echo ".‘<br>1354<br>‘;";
    }
    public function abc(){
        echo ‘function name<br>‘;
        echo __METHOD__.‘<br>‘;//current method name

    }
}
$abcd =new a();
$abcd->abc();
echo ‘---------------‘;

php-constant

原文：https://www.cnblogs.com/cyany/p/10011347.html