function_exists() cannot determine the custom function

Function test () {return true;} if (function_exists ('test')) {echo "test is function"; & nb

From [PHPdiscussion group] 2024-04-29 11:01:01 0  3  2064

Data refresh display - how to display data in the database like flight information on a large screen at an airport

There are n pieces of data in the database (which may change in real time). Now I want to display 8 pieces of ...

From [PHPdiscussion group] 2018-06-14 10:07:14 0  6  2064

What is the effect of adding echo <pre> and echo </pre>? The result is the same as not increasing the output.

$minren = array(1,2,'Haha');echo ''<pre>;var_dump($minren);echo '</pre>';

From [PHPdiscussion group] 2018-08-20 10:07:13 0  2  2063

Unable to load module:Login

Unable to load module: Login error location FILE: /www/wwwroot/chongdianbao.j19o.cn/ThinkPHP/Common/functions....

From [PHPdiscussion group] 2019-08-29 12:06:48 0  1  2063

What does /mis mean?

What does the mis after '/<section class="ov">(.*?)<div class="hr-10"><\/di...

From [PHPdiscussion group] 2017-12-20 17:49:48 0  1  2060

How to enter the backend administrator interface after creating the website

How to enter the backend administrator interface after creating the website

From [PHPdiscussion group] 2018-03-12 18:32:55 0  3  2059

What token is yourSecurityToken in Alibaba Cloud oss ​​storage? I checked the documentation and couldn't find it.

// The Alibaba Cloud main account AccessKey has access rights to all APIs, and the risk is very high. It is st...

From [PHPdiscussion group] 2019-08-17 11:34:24 0  0  2058

The mysql database has been unable to start. It was installed using the appser integrated environment.

When logging in to PHPmyadmin, this #2002 is displayed above the input box - - The server is not responding (o...

From [PHPdiscussion group] 2018-09-02 21:28:13 0  2  2057

phpstudy cannot start mysql?

phpstudy cannot start mysql, but under the cmd command, running net start mysql can start it

From [PHPdiscussion group] 2018-01-21 03:26:50 0  6  2056

I have been struggling for a week as to why the database cannot insert a piece of data! ?

The code is as follows, why the form data cannot be inserted into the database table. What's going on? ! <?...

From [PHPdiscussion group] 2018-02-27 23:07:57 0  7  2051

"The Fourth Online Training Class Experience Class" starts at 20:00 tonight (2019.1.10), and all four main teachers will appear!

The "Fourth Online Training Class Experience Class" starts at 20:00 tonight, and all four main teach...

From [PHPdiscussion group] 2019-01-10 11:01:34 3  2  2050

isset什么东西？怎么用的

f( isset($arr0) ) {print_r($arr0);} 什么意思 这句话？？？一直不懂isset怎么用

From [PHPdiscussion group] 2016-12-20 16:32:40 0  3  2049

? What's going on when it keeps showing that it's preparing to install? 1

What’s going on when it keeps showing that it’s preparing to install? 1

From [PHPdiscussion group] 2019-07-30 12:50:06 0  1  2043

Why does the page prompt that the variable ImgList is not defined?

Public function imgList(){ modified based on the teacher’s gradeList $Image = img_tb::all(); $count = img_tb::...

From [PHPdiscussion group] 2018-01-29 14:20:21 0  8  2043

PHP的$_SERVER['HTTP_HOST']获取服务器地址

PHP的$_SERVER['HTTP_HOST']获取服务器地址

From [PHPdiscussion group] 2016-10-09 11:41:16 0  1  2038