The problem of PHP executing cmd command with exec function

execute in the cmd window: ffmpeg-I foo.avi-r 1-s WxH-f image2 foo-%03d.jpeg can.
but no matter how it is executed with PHP"s exec function, php.ini "s security mode is turned off and exec system commands are open. I still can"t. I use the PHPstudy integrated environment

Php
Aug.27,2021

what do you mean invalid? post a screenshot of your code and execution. No one knows how to answer your question like this.

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-64f5-1eb8080-269c.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1eb8080-269c.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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