Php reports an error after it is deployed to a network server?

you can connect to the database in the local phpStudy environment, so why do you report an error when you put it on a network server?

the following is the request code: 

   
 there is no problem locally. Just get in touch with PHP for the first time 
.
Deploy php
Jun.03,2021

mysql extension is not installed in the web server PHP environment.
the mysql extension is no longer recommended and has been removed in PHP7.
http://www.php.net/manual/zh/.

the message to report an error is to say 

$_GET['columns'][$j]['searchable'];

$_ GET does not have the key columns (key)

figure 2, the server-side PHP version is too high because the mysql_* series of functions have been completely removed from the PHP7, resulting in no errors in the functions.

Previous: CreateToken and accessToken in Laravel

Next: Design problem of interface returning code in thinkPHP5

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b32547-2b659.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b32547-2b659.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?