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 
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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.

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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-64f5-1eb0b1d-22f8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1eb0b1d-22f8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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