折腾：
【未解决】mac中如何在MAMP中调试WordPress的php代码
期间，但是此处想要调试WordPress的插件的php代码：
点击 手动同步 后：
代码：
/Users/crifan/dev/dev_root/crifan.com/mamp/wordpress/wp-content/themes/twentyseventeen/functions.php
... $path = $_SERVER['HTTP_HOST'] . $_SERVER[REQUEST_URI]; ...
会报错：
出现异常。 Warning: Use of undefined constant REQUEST_URI - assumed 'REQUEST_URI' (this will throw an Error in a future version of PHP)
需要去搞清楚，如何才能继续正常的调试WordPress的插件的php代码
去看调用堆栈
找到建议DEBUG=True
先去设置看看是否有变化
/Users/crifan/dev/dev_root/crifan.com/mamp/wordpress/wp-config.php
// define('WP_DEBUG', false);
define('WP_DEBUG', true);然后直接就报错了：
( ! ) Warning: Use of undefined constant REQUEST_URI - assumed 'REQUEST_URI' (this will throw an Error in a future version of PHP) in /Users/crifan/dev/dev_root/crifan.com/mamp/wordpress/wp-content/themes/twentyseventeen/functions.php on line 73
Call Stack
#
Time
Memory
Function
Location
1
0.0147
440488
{main}( )
.../index.php:0
2
0.0182
488136
require_once( '/Users/crifan/dev/dev_root/crifan.com/mamp/wordpress/wp-admin/admin.php' )
.../index.php:10
3
0.0198
500744
require_once( '/Users/crifan/dev/dev_root/crifan.com/mamp/wordpress/wp-load.php' )
.../admin.php:31
4
0.0202
512688
require_once( '/Users/crifan/dev/dev_root/crifan.com/mamp/wordpress/wp-config.php' )
.../wp-load.php:37
5
0.0219
592048
require_once( '/Users/crifan/dev/dev_root/crifan.com/mamp/wordpress/wp-settings.php' )
.../wp-config.php:97
6
0.8850
25236440
include( '/Users/crifan/dev/dev_root/crifan.com/mamp/wordpress/wp-content/themes/twentyseventeen/functions.php' )
.../wp-settings.php:426 
去搜索：
WordPress functions.php Warning Use of undefined constant REQUEST_URI
Warning: Use of undefined constant REQUEST_URI – assumed ‘REQUEST_URI’ | WordPress.org
这人自己解决了bug
line 73 in functions.php
$path = $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
把
$path = $_SERVER[‘HTTP_HOST’] . $_SERVER[REQUEST_URI];
改为：
$path = $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
去改：
// $path = $_SERVER['HTTP_HOST'] . $_SERVER[REQUEST_URI]; $path = $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
注意到：
此处路径是：
/Users/crifan/dev/dev_root/crifan.com/mamp/wordpress/wp-content/themes/twentyseventeen/functions.php
是WordPress官网的自带的主题twentyseventeen的代码
竟然是语法错误。。。
然后再去调试，看看问题是否彻底消失了。
错误真的消失了。
【总结】
WordPress的主题twentyseventeen中的functions.php
wordpress/wp-content/themes/twentyseventeen/functions.php
自带代码中有个语法错误：
$path = $_SERVER['HTTP_HOST'] . $_SERVER[REQUEST_URI];
改为：
$path = $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
即可避免此处的报错：
Warning: Use of undefined constant REQUEST_URI - assumed 'REQUEST_URI' (this will throw an Error in a future version of PHP) in /Users/crifan/dev/dev_root/crifan.com/mamp/wordpress/wp-content/themes/twentyseventeen/functions.php on line 73
了。
转载请注明：在路上 » 【已解决】VSCode调试WordPress的PHP代码报错：Warning Use of undefined constant REQUEST_URI