.Htaccess Interview Questions

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.Htaccess File Interview Questions

.htaccess interview questions

.Htaccess File Interview Question for Freshers

What is .Htaccess File ?

.htaccess files are configuration files of Apache Server which provide a way to make configuration changes on a per-directory basis.

.Why do we use this and Where?

Using this .htaccess& file, we can control php.ini and httpd.conf file

Why use .htaccess file

  • Define custom error pages
  • Banning certain IP addresses from accessing your site
  • redirecting users to other pages / sites
  • password protecting directories
  • enabling certain PHP modules
  • enabling SSI (server side includes)

How to define Custom Error Page using .htaccess file ?

.htaccess file for Custom Error Pages

ErrorDocument 404 /filenotfound.html

How to ban certain IP addresses from accessing your site using .htaccess ?

Syntax

order allow,deny
deny from 255.0.0.0
deny from 192.45.3.2
allow from all

How to ban visitors accessing your site using .htaccess by Referrer ?

Syntax

RewriteEngine on
# Options +FollowSymlinks
RewriteCond %{HTTP_REFERER} otherdomain\.com [NC]
RewriteRule .* - [F]

How to redirect http to https ?

Syntax

RewriteEngine on
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R=301,L]

How to redirect non-www to www ?

Syntax

RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]

How to redirect all pages to newdomain ?

Syntax

RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} !^olddomain\.com$ [NC]
RewriteRule ^(.*)$ http://newdomain.com [R=301,L]

What is meaning of R & L flag in htaccess ?

htacces R flag causes a HTTP redirect to be issued to the browser and 301 means its permanent redirect.

htaccess L fag causes to stop processing the rule set, if the rule matches, no further rules will be processed.

How to redirect to another directory within same domain ?

Syntax

Redirect /olddir /newdir

what is meaning of 301, 302, 400, 401, 403, 404 and 500 error codes ?

  • 301 - Permanent movement
  • 302 - Temporary movement
  • 400 - Bad request
  • 401 - Authorization Required
  • 403 - Forbidden
  • 404 - Page Not Found
  • 500 - Internal Server Error

How does RewriteBase works in .htaccess ?

RewriteBase is used to set a base URL for your rewrites rules.

Syntax

RewriteEngine On
RewriteBase /~new/

Do i need to restart the apache after chnages in .htaccess ?

No, no need to restart your server after change in .htaccess file.

What is htaccess F(forbidden) Flag ?

This flag causes the server to return a 403 Forbidden status code to the client. Se in below code If anyone trying to open any file with .exe, he will get Forbidden error.

Syntax

RewriteRule \.exe - [F]

How to block few IP address ?

Syntax

order allow,deny
deny from xxx.xxx.xxx.xxx #specify a specific address
allow from all

How to redirect to error/404.html when 404 errors comes?

Syntax

ErrorDocument 400 error/404.html

How to set the php config variables in .htaccess ?

Syntax

php_value upload_max_filesize 32M

htaccess NC(nocase) Flag ?

This flag causes RewriteRule to be matched in a case-insensitive manner.

Syntax

RewriteRule ^(.*) /index.php?req=$1 [NC]

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