PHP mkdir()在浏览器中不起作用[重复]

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I'm trying to create directory on my local apache server with php.
I tried
<?php mkdir("folder"); ?>
and
<?php exec("sudo mkdir folder"); ?>
When I try to execute them in browser nothing happens.
But I can execute them from terminal by using sudo. (I also modified sudoers file so it won't prompt for password in second code)
When I don't use sudo I get this error
PHP Warning: mkdir(): Permission denied in /var/www/html/mscr/add.php on line 2

I've also tried this and this .

So I can execute almost everything but directory operations in browser. I want to be able to create, delete and edit directories in browser.

Thank you!

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Sounds like Apache doesn't have permission to create the folder. Either give Apache ownership of the folder (where you're trying to create a new one)

sudo chown www-data /var/www/html/mscr

or set the folder permissions to 777

sudo chmod 777 /var/www/html/mscr

Warning this will make everything within the mscr folder executable. To get around this most CMS will create a subfolder which is set to 777 so something like /var/www/html/mscr/uploads

<?php mkdir("folder", 777, true); ?>