centos - Linux crontab, what is the difference between executing .sh files and .php files

Like the title, I saw a .sh file was executed in the crontab of a project, and then I searched for the corresponding php file in .sh. It feels a bit redundant. Is that so?
It can’t be a problem that affects performance

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Like the title, I saw a .sh file was executed in the crontab of a project, and then I searched for the corresponding php file in .sh. It feels a bit redundant. Is that so?
It can’t be a problem that affects performance

They are completely different things. .sh is a shell command
.php is a PHP file

You execute the php file in the shell command. If it is very simple to execute, you might as well use php -f xxx.php
If you need to judge. Assign value. Cycle. . Of course you have to use the shell to execute it.

A .sh file can execute multiple php files according to their functions to facilitate maintenance and management.