echo为什么后面有时候加“”,有时候不加引号?echo的作用是什么?
From [PHPdiscussion group] 2016-12-19 16:41:17 0 2 2183
From [PHPdiscussion group] 2018-01-13 23:04:32 0 3 2177
当数据库的值发生变化时 , php能对数据进行修改或者其他操作 。注意 : 这里只是说动态监听 , 而并非MySQL触发器之类的意思 !
From [PHPdiscussion group] 2017-02-12 15:05:18 0 2 2171
From [PHPdiscussion group] 2018-07-18 16:32:11 0 8 2168
From [PHPdiscussion group] 2017-07-01 09:12:17 0 3 2167
From [PHPdiscussion group] 2017-04-10 16:06:45 0 28 2167
Set click events individually for list items in the WeChat applet for loop
From [PHPdiscussion group] 2017-06-23 13:41:42 0 1 2166
From [PHPdiscussion group] 2017-08-25 20:58:35 1 4 2165
From [PHPdiscussion group] 2016-12-24 14:22:43 0 2 2163
Can PHPstudy installed in windows be accessed from the external network? How to set it up?
From [PHPdiscussion group] 2019-03-16 08:12:22 0 2 2159
The public welfare live class "TP6.0 Quick Start" will be launched globally at 19:00 tonight!
From [PHPdiscussion group] 2019-04-18 16:13:45 0 0 2152
The login interface verification shows undefined, please solve it.
From [PHPdiscussion group] 2020-05-05 21:39:14 0 1 2151
Why does it keep showing that the password cannot be empty?
From [PHPdiscussion group] 2019-05-21 17:13:04 0 1 2151
How to fix PHPstudy installation failure
I checked according to the teacher's method and found that my HOMEPAGE could not be opened.
From [PHPdiscussion group] 2018-02-06 12:21:43 0 3 2150
没有被赋值的变量是 0 unset()被认为null双引号字符串其中的变量名会被变量值替代 这样说对吗?
From [PHPdiscussion group] 2016-12-24 14:06:12 0 2 2150