PhP page gives error when i trying to open it

Question

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hello i've got problem my localhost php page dosen't opens and give me that erro who knows why??

if this is gonna help this is my code:

Comments

[m.ts10806]

Maybe Japanese Only.

[thyda.eiqau]

Here is Japanese community so I believe StackOverflow or other some communities should be your help.
btw, `Not Found` means browser couldn't find any resources with the URL you filled. Make sure below things.
1. Where is the document root of Apache that is installed on your local machine
2. What URL is for access to document root
3. Where is the location of index.php or welcome.php