Questions about the windows command prompt (administrator)

problems encountered when changing local development environment to phpstudy original xampp
when changing environment variables
after php mysql environment variable is added, cmd (command prompt) input command php-v prompts no php command

mysql also

but entering the command prompt is normal when the administrator enters php-v mysql-v

Php
Feb.28,2021

it is recommended that you check the environment variable and delete the environment variable of XAMPP

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-64f5-1b2c166-2bacd.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b2c166-2bacd.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?