This is probably a very easy question. Anyway how do you use variables from a url without requests. For example:
www.mysite.com/get.php/id/123
Then the page retrieves id 123 from a database.
How is this done? Thanks in advance!
UPDATE
If i have the following structure:
support/
sys/
issue/
issue.php
.htaccess
home.php
etc.....
With .htaccess file containing:
RewriteEngine On
RewriteRule ^/issue/(.*)$ /issue/issue.php?id=$1 [L]
Why do I have to type:
http://www.mysite.com/support/sys/issue/issue/1234
In order to load a file? When I want to type
http://www.mysite.com/support/sys/issue/1234
also, how do I then retrieve the id once the file loads?
Problem
This is a very basic/common problem which stems from the fact that your .htaccess rule is rewriting a url which contains a directory which actually exists...
File structure
>support
>sys
>issue
issue.php
.htaccess
(I.e. the directory issue and the .htaccess file are in the same directory: sys)
Rewrite Issues
Then:
RewriteEngine ON
RewriteRule ^issue/(.*)/*$ issue/issue.php?id=$1 [L]
# Note the added /* before $. In case people try to access your url with a trailing slash
Will not work. This is because (Note: -> = redirects to):
http://www.mysite.com/support/sys/issue/1234
-> http://www.mysite.com/support/sys/issue/issue.php?id=1234
-> http://www.mysite.com/support/sys/issue/issue.php?id=issue.php
Example/Test
Try it with var_dump($_GET) and the following URLs:
http://mysite.com/support/sys/issue/1234
http://mysite.com/support/sys/issue/issue.php
Output will always be:
array(1) { ["id"]=> string(9) "issue.php" }
Solution
You have three main options:
Add a condition that real files aren't redirected
Only rewrite numbers e.g. rewrite issue/123 but not issue/abc
Do both
Method 1
RewriteEngine ON
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^issue/(.*)/*$ issue/issue.php?id=$1 [L]
Method 2
RewriteEngine ON
RewriteRule ^issue/(\d*)/*$ issue/issue.php?id=$1 [L]
Method 3
RewriteEngine ON
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^issue/(\d*)/*$ issue/issue.php?id=$1 [L]
Retrieving the ID
This is the simple part...
$issueid = $_GET['id'];
In your .htaccess you should add:
RewriteEngine On
RewriteRule ^id/([^/]*)$ /get.php/?id=$1 [L]
Also like previous posters mentioned, make sure you have your mod_rewrite activated.
You have to use a file called .htaccess, do a search on Google and you'll find a lot of examples how to accomplish that.
You will need mod_rewrite (or the equivalent on your platform) to rewrite /get.php/id/123 to /get.php?id=123.
I tried and tried the .htaccess method but to no avail. So I attempted a PHP solution and came up with this.
issue.php
<?php
if (strpos($_SERVER['REQUEST_URI'], 'issue.php') !== FALSE){
$url = split('issue.php/', $_SERVER['REQUEST_URI']);
}elseif (strpos($_SERVER['REQUEST_URI'], 'issue') !== FALSE){
$url = split('issue/', $_SERVER['REQUEST_URI']);
}else{
exit("URI REQUESET ERROR");
}
$id = $url[1];
if(preg_match('/[^0-9]/i', $id)) {
exit("Invalid ID");
}
?>
What you're looking for is the PATH_INFO $_SERVER variable.
From http://php.net/manual/en/reserved.variables.server.php:
'PATH_INFO'
Contains any client-provided pathname information trailing the actual
script filename but preceding the query string, if available. For
instance, if the current script was accessed via the URL
http://www.example.com/php/path_info.php/some/stuff?foo=bar, then
$_SERVER['PATH_INFO'] would contain /some/stuff.
explode() it and work on its parts.
EDIT: Use rewrite rules to map the users' request URLs to your internal structure and/or hide the script name. But not to convert the PATH_INFO to a GET query, that's totally unnecessary! Just do a explode('/',$_SERVER['PATH_INFO']) and you're there!
Also, seeing your own answer, you don't need any preg_mathes. If your database only contains numeric ids, giving it a non-numeric one will simply be rejected. If for some reason you still need to check if a string var has a numeric value, consider is_numeric().
Keep it simple. Don't reinvent the wheel!
Just wondering why no answer has mentioned you about use of RewriteBase
As per Apache manual:
The RewriteBase directive specifies the URL prefix to be used for
per-directory (htaccess) RewriteRule directives that substitute a
relative path.
Using RewriteBase in your /support/sys/issue/.htaccess, code will be simply:
RewriteEngine On
RewriteBase /support/sys/issue/
RewriteRule ^([0-9+)/?$ issue.php?id=$1 [L,QSA]
Then insde your issue.php you can do:
$id = $_GET['id'];
to retrieve your id from URL.
Related
I'm building a URL shortening web app using PHP. I am able to generate shorter URLs successfully. But I'm not able to redirect the users when they visit the shortened URL.
If the user enters https://example.com/aBc1X, I'd like to capture the aBc1X. I'll then query the database to find the original URL and then redirect.
My question is, how can I extract the aBc1X from the above URL?
P.S. I'll use either Apache or Nginx.
Two things to do for you.
First you have to redirect all traffic to one file which will be your router file. You can do this by placing a few rules in .htaccess file. I will put there some generic rules to start with (this one come from Wordpress):
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^redirect\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /redirect.php [L]
</IfModule>
They tell that everywhere url points to which isn't file or directory will run file redirect.php. You may want to tweak that settings to your needs.
Then in redirect.php you can capture url by looking inside $_SERVER['REQUEST_URI'].
For url http://example.com/any-url-i-want you would have
$_SERVER['REQUEST_URI'] == '/any-url-i-want.
Now the only thing you need is to find the url in database, and do a redirect.
I guess you can handle string operations at this point, either by using parse_url, regular expressions, or simple string cutting.
You want to use;
$_SERVER['REQUEST_URI'];
That will return what you're looking for.
You can see the documentation here
To parse the url
$url = "https://example.com/aBc1X";
$path = ltrim(parse_url($url, PHP_URL_PATH), '/');
Then $path will be aBc1X as desired. Note that any query following a ? will be omitted in this solution. For more details have a look at the documentation of the parse_url function.
Normally, the practice or very old way of displaying some profile page is like this:
www.domain.com/profile.php?u=12345
where u=12345 is the user id.
In recent years, I found some website with very nice urls like:
www.domain.com/profile/12345
How do I do this in PHP?
Just as a wild guess, is it something to do with the .htaccess file? Can you give me more tips or some sample code on how to write the .htaccess file?
According to this article, you want a mod_rewrite (placed in an .htaccess file) rule that looks something like this:
RewriteEngine on
RewriteRule ^/news/([0-9]+)\.html /news.php?news_id=$1
And this maps requests from
/news.php?news_id=63
to
/news/63.html
Another possibility is doing it with forcetype, which forces anything down a particular path to use php to eval the content. So, in your .htaccess file, put the following:
<Files news>
ForceType application/x-httpd-php
</Files>
And then the index.php can take action based on the $_SERVER['PATH_INFO'] variable:
<?php
echo $_SERVER['PATH_INFO'];
// outputs '/63.html'
?>
I recently used the following in an application that is working well for my needs.
.htaccess
<IfModule mod_rewrite.c>
# enable rewrite engine
RewriteEngine On
# if requested url does not exist pass it as path info to index.php
RewriteRule ^$ index.php?/ [QSA,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule (.*) index.php?/$1 [QSA,L]
</IfModule>
index.php
foreach (explode ("/", $_SERVER['REQUEST_URI']) as $part)
{
// Figure out what you want to do with the URL parts.
}
I try to explain this problem step by step in following example.
0) Question
I try to ask you like this :
i want to open page like facebook profile www.facebook.com/kaila.piyush
it get id from url and parse it to profile.php file and return featch data from database and show user to his profile
normally when we develope any website its link look like
www.website.com/profile.php?id=username
example.com/weblog/index.php?y=2000&m=11&d=23&id=5678
now we update with new style not rewrite we use www.website.com/username or example.com/weblog/2000/11/23/5678 as permalink
http://example.com/profile/userid (get a profile by the ID)
http://example.com/profile/username (get a profile by the username)
http://example.com/myprofile (get the profile of the currently logged-in user)
1) .htaccess
Create a .htaccess file in the root folder or update the existing one :
Options +FollowSymLinks
# Turn on the RewriteEngine
RewriteEngine On
# Rules
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /index.php
What does that do ?
If the request is for a real directory or file (one that exists on the server), index.php isn't served, else every url is redirected to index.php.
2) index.php
Now, we want to know what action to trigger, so we need to read the URL :
In index.php :
// index.php
// This is necessary when index.php is not in the root folder, but in some subfolder...
// We compare $requestURL and $scriptName to remove the inappropriate values
$requestURI = explode(‘/’, $_SERVER[‘REQUEST_URI’]);
$scriptName = explode(‘/’,$_SERVER[‘SCRIPT_NAME’]);
for ($i= 0; $i < sizeof($scriptName); $i++)
{
if ($requestURI[$i] == $scriptName[$i])
{
unset($requestURI[$i]);
}
}
$command = array_values($requestURI);
With the url http://example.com/profile/19837, $command would contain :
$command = array(
[0] => 'profile',
[1] => 19837,
[2] => ,
)
Now, we have to dispatch the URLs. We add this in the index.php :
// index.php
require_once("profile.php"); // We need this file
switch($command[0])
{
case ‘profile’ :
// We run the profile function from the profile.php file.
profile($command([1]);
break;
case ‘myprofile’ :
// We run the myProfile function from the profile.php file.
myProfile();
break;
default:
// Wrong page ! You could also redirect to your custom 404 page.
echo "404 Error : wrong page.";
break;
}
2) profile.php
Now in the profile.php file, we should have something like this :
// profile.php
function profile($chars)
{
// We check if $chars is an Integer (ie. an ID) or a String (ie. a potential username)
if (is_int($chars)) {
$id = $chars;
// Do the SQL to get the $user from his ID
// ........
} else {
$username = mysqli_real_escape_string($char);
// Do the SQL to get the $user from his username
// ...........
}
// Render your view with the $user variable
// .........
}
function myProfile()
{
// Get the currently logged-in user ID from the session :
$id = ....
// Run the above function :
profile($id);
}
Simple way to do this. Try this code. Put code in your htaccess file:
Options +FollowSymLinks
RewriteEngine on
RewriteRule profile/(.*)/ profile.php?u=$1
RewriteRule profile/(.*) profile.php?u=$1
It will create this type pretty URL:
http://www.domain.com/profile/12345/
For more htaccess Pretty URL:http://www.webconfs.com/url-rewriting-tool.php
It's actually not PHP, it's apache using mod_rewrite. What happens is the person requests the link, www.example.com/profile/12345 and then apache chops it up using a rewrite rule making it look like this, www.example.com/profile.php?u=12345, to the server. You can find more here: Rewrite Guide
ModRewrite is not the only answer. You could also use Options +MultiViews in .htaccess and then check $_SERVER REQUEST_URI to find everything that is in URL.
There are lots of different ways to do this. One way is to use the RewriteRule techniques mentioned earlier to mask query string values.
One of the ways I really like is if you use the front controller pattern, you can also use urls like http://yoursite.com/index.php/path/to/your/page/here and parse the value of $_SERVER['REQUEST_URI'].
You can easily extract the /path/to/your/page/here bit with the following bit of code:
$route = substr($_SERVER['REQUEST_URI'], strlen($_SERVER['SCRIPT_NAME']));
From there, you can parse it however you please, but for pete's sake make sure you sanitise it ;)
It looks like you are talking about a RESTful webservice.
http://en.wikipedia.org/wiki/Representational_State_Transfer
The .htaccess file does rewrite all URIs to point to one controller, but that is more detailed then you want to get at this point. You may want to look at Recess
It's a RESTful framework all in PHP
so my index.php can be this:
<?php
$restOfURL = ''; //idk how to get this
print $restOfURL; //this should print 'FOO', 'VAR3', or any string after the domain.
?>
You want to use,
<?php
$restOfURL = $_SERVER['REQUEST_URI'];
// If you want to remove the slash at the beginning you can use ltrim()
$restOfURL = ltrim($restOfURL, "/");
?>
You can find more of the predefined server variables in the PHP documentation.
Update
Based on your comment to the question, I guess you're using something like mod_rewrite to rewrite the FOO, etc and route everything to just one file (index.php). In that case I would expect the rest of the URL to already be passed to the index.php file. However, if not, you can use mod_rewrite to pass the rest of the URL as a GET variable, and then just use that GET variable in your index.php file.
So if you enable mod_rewrite and then add something like this to your .htaccess file,
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?url=$1 [L,QSA]
Then the rest of the URL will be available to you in your index.php file from the $_GET['url'] variable.
Reading $_SERVER['REQUEST_URI'], as everybody has pointed out, can tell you what the URL looks like, but it doesn't really work the way you want it unless you have a way to point requests for me.com/VALUE1 and me.com/VALUE2 to the script that will do the processing. (Otherwise your server will return a 404 error unless you have a script for each value you want, in which case the script already knows the value...)
Assuming you're using apache, you want to use mod_rewrite. You'll have to install and enable the module and then add some directives to your .htaccess, httpd.conf or virtual host config. This allows you make a request for me.com/XXX map internally to me.com/index.php?var=XXX, so you can read the value from $_GET['var'].
$var = ltrim( $_SERVER['REQUEST_URI'], '/' )
http://www.php.net/manual/en/reserved.variables.server.php
Just by looking at the examples, i think you are looking for the apache mod_rewrite.
You can apply a RewriteRule via an htaccess file, for example:
Options +FollowSymlinks
RewriteEngine on
RewriteRule ^([\w]+)$ /checkin.php?string=$1 [L]
For example this url http://foo.com/aka2 will be process by checkin.php script and will have "aka2" passed as $_GET['string'].
Make no mistake, the URL will still be visible in the browser as http://foo.com/aka2 but the server will actually process http://foo.com/checkin.php?string=aka
mod_rewrite documentation
$_SERVER['REQUEST_URI']
Why bother with all the fancy mod_rewrite/query_string business? There's already $_SERVER['PATH_INFO'] available for just such data.
I have written the following code in my .htaccess file
Options +FollowSymLinks
RewriteEngine on
RewriteRule page/(.*)/ index.php?page=$1&%{QUERY_STRING}
RewriteRule page/(.*) index.php?page=$1&%{QUERY_STRING}
The url "xyz.in/index.php?page=home" will look like this in the address bar of browser "xyz.in/page/home"
If I want to pass a variable through URL than I will have to write as "xyz.in/page/home?value=1" or "xyz.in/page/home?value=1&value2=56&flag=true"
The initial part of url (xyz.in/page/home) is clean(search engine friendly), but if I pass some more variables in the url then it doesn't look nice.
I want to make this url like
"xyz.in/page/home/value/4/value2/56" and so on.
The variables value and value2 are not static they are just used for example over here. Name can be anything.
Is it possible to do this ?
Please help me form the ".htaccess" file
(any corrections related to title or language or tags used in this question are welcome)
Thanks
The easiest would be to parse the URL path with PHP. Then you would just need this rule to rewrite the requests to your PHP file:
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule !^index\.php$ index.php [L]
The condition will ensure that only requests to non-existing files are rewritten.
Your PHP script could than look like this:
$_SERVER['REQUEST_URI_PATH'] = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
$segments = explode('/', ltrim($_SERVER['REQUEST_URI_PATH']));
for ($i=0, $n=count($segments); $i<$n; $i+=2) {
$_GET[rawurldecode($segments[$i])] = rawurldecode($segments[$i+1]);
}
Normally, the practice or very old way of displaying some profile page is like this:
www.domain.com/profile.php?u=12345
where u=12345 is the user id.
In recent years, I found some website with very nice urls like:
www.domain.com/profile/12345
How do I do this in PHP?
Just as a wild guess, is it something to do with the .htaccess file? Can you give me more tips or some sample code on how to write the .htaccess file?
According to this article, you want a mod_rewrite (placed in an .htaccess file) rule that looks something like this:
RewriteEngine on
RewriteRule ^/news/([0-9]+)\.html /news.php?news_id=$1
And this maps requests from
/news.php?news_id=63
to
/news/63.html
Another possibility is doing it with forcetype, which forces anything down a particular path to use php to eval the content. So, in your .htaccess file, put the following:
<Files news>
ForceType application/x-httpd-php
</Files>
And then the index.php can take action based on the $_SERVER['PATH_INFO'] variable:
<?php
echo $_SERVER['PATH_INFO'];
// outputs '/63.html'
?>
I recently used the following in an application that is working well for my needs.
.htaccess
<IfModule mod_rewrite.c>
# enable rewrite engine
RewriteEngine On
# if requested url does not exist pass it as path info to index.php
RewriteRule ^$ index.php?/ [QSA,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule (.*) index.php?/$1 [QSA,L]
</IfModule>
index.php
foreach (explode ("/", $_SERVER['REQUEST_URI']) as $part)
{
// Figure out what you want to do with the URL parts.
}
I try to explain this problem step by step in following example.
0) Question
I try to ask you like this :
i want to open page like facebook profile www.facebook.com/kaila.piyush
it get id from url and parse it to profile.php file and return featch data from database and show user to his profile
normally when we develope any website its link look like
www.website.com/profile.php?id=username
example.com/weblog/index.php?y=2000&m=11&d=23&id=5678
now we update with new style not rewrite we use www.website.com/username or example.com/weblog/2000/11/23/5678 as permalink
http://example.com/profile/userid (get a profile by the ID)
http://example.com/profile/username (get a profile by the username)
http://example.com/myprofile (get the profile of the currently logged-in user)
1) .htaccess
Create a .htaccess file in the root folder or update the existing one :
Options +FollowSymLinks
# Turn on the RewriteEngine
RewriteEngine On
# Rules
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /index.php
What does that do ?
If the request is for a real directory or file (one that exists on the server), index.php isn't served, else every url is redirected to index.php.
2) index.php
Now, we want to know what action to trigger, so we need to read the URL :
In index.php :
// index.php
// This is necessary when index.php is not in the root folder, but in some subfolder...
// We compare $requestURL and $scriptName to remove the inappropriate values
$requestURI = explode(‘/’, $_SERVER[‘REQUEST_URI’]);
$scriptName = explode(‘/’,$_SERVER[‘SCRIPT_NAME’]);
for ($i= 0; $i < sizeof($scriptName); $i++)
{
if ($requestURI[$i] == $scriptName[$i])
{
unset($requestURI[$i]);
}
}
$command = array_values($requestURI);
With the url http://example.com/profile/19837, $command would contain :
$command = array(
[0] => 'profile',
[1] => 19837,
[2] => ,
)
Now, we have to dispatch the URLs. We add this in the index.php :
// index.php
require_once("profile.php"); // We need this file
switch($command[0])
{
case ‘profile’ :
// We run the profile function from the profile.php file.
profile($command([1]);
break;
case ‘myprofile’ :
// We run the myProfile function from the profile.php file.
myProfile();
break;
default:
// Wrong page ! You could also redirect to your custom 404 page.
echo "404 Error : wrong page.";
break;
}
2) profile.php
Now in the profile.php file, we should have something like this :
// profile.php
function profile($chars)
{
// We check if $chars is an Integer (ie. an ID) or a String (ie. a potential username)
if (is_int($chars)) {
$id = $chars;
// Do the SQL to get the $user from his ID
// ........
} else {
$username = mysqli_real_escape_string($char);
// Do the SQL to get the $user from his username
// ...........
}
// Render your view with the $user variable
// .........
}
function myProfile()
{
// Get the currently logged-in user ID from the session :
$id = ....
// Run the above function :
profile($id);
}
Simple way to do this. Try this code. Put code in your htaccess file:
Options +FollowSymLinks
RewriteEngine on
RewriteRule profile/(.*)/ profile.php?u=$1
RewriteRule profile/(.*) profile.php?u=$1
It will create this type pretty URL:
http://www.domain.com/profile/12345/
For more htaccess Pretty URL:http://www.webconfs.com/url-rewriting-tool.php
It's actually not PHP, it's apache using mod_rewrite. What happens is the person requests the link, www.example.com/profile/12345 and then apache chops it up using a rewrite rule making it look like this, www.example.com/profile.php?u=12345, to the server. You can find more here: Rewrite Guide
ModRewrite is not the only answer. You could also use Options +MultiViews in .htaccess and then check $_SERVER REQUEST_URI to find everything that is in URL.
There are lots of different ways to do this. One way is to use the RewriteRule techniques mentioned earlier to mask query string values.
One of the ways I really like is if you use the front controller pattern, you can also use urls like http://yoursite.com/index.php/path/to/your/page/here and parse the value of $_SERVER['REQUEST_URI'].
You can easily extract the /path/to/your/page/here bit with the following bit of code:
$route = substr($_SERVER['REQUEST_URI'], strlen($_SERVER['SCRIPT_NAME']));
From there, you can parse it however you please, but for pete's sake make sure you sanitise it ;)
It looks like you are talking about a RESTful webservice.
http://en.wikipedia.org/wiki/Representational_State_Transfer
The .htaccess file does rewrite all URIs to point to one controller, but that is more detailed then you want to get at this point. You may want to look at Recess
It's a RESTful framework all in PHP