PHP Regular expression replace for url - php

I need help to replace the last occurance of numeric uri string from my url:
For eg I have url strings as:
$url1 = "http://localhost/mystore/electronics/company/5-mobile/5";
$url2 = "http://localhost/mystore/electronics/company/5-mobile/21";
$url3 = "http://localhost/mystore/electronics/company/5-mobile";
from which I want to remove last occurance of "/5" or "/21" or any other number following the last forward slash with empty string and get only:
$url1_after_preg_replace = "http://localhost/mystore/electronics/company/5-mobile";
$url2_after_preg_replace = "http://localhost/mystore/electronics/company/5-mobile";
$url3_after_preg_replace = "http://localhost/mystore/electronics/company/5-mobile";
Thanks in advance for any help.

Not using preg replace but a simple way :
if(explode(dirname($url1),$url1)[1] != "/5-mobile") {
$url1_after_preg_replace = dirname($url1);
}
Reference :
http://php.net/manual/en/function.dirname.php
http://php.net/manual/en/function.explode.php

Related

SPLIT URL in PHP

I have below URL in my code and i want to split it and get the number from it
For example from the below URL need to fetch 123456
https://review-test.com/#/c/123456/
I have tried this and it is not working
$completeURL = https://review-test.com/#/c/123456/ ;
list($url, $number) = explode('#c', preg_replace('/^.*\/+/', '', $completeURL));
Use parse_url
It's specifically made for this sort of thing.
You can do this without using regex also -
$completeURL = 'https://review-test.com/#/c/123456/' ;
list($url, $number) = explode('#c', str_replace('/', '', $completeURL));
echo $number;
If you wan to get the /c/123456/ params you will need to execute the following:
$url = 'https://review-test.com/#/c/123456/';
$url_fragment = parse_url($url, PHP_URL_FRAGMENT);
$fragments = explode('/', $url_fragment);
$fragments = array_filter(array_map('trim', $fragments));
$fragments = array_values($fragments);
The PHP_URL_FRAGMENT will return a component of the url after #
After parse_url you will end up with a string like this: '/c/123456/'
The explode('/', $url_fragment); function will return an array with empty indexes where '/' was extracted
In order to remove empty indexes array_filter($fragments); the
array_map with trim option will remove excess spaces. It does not
apply in this case but in real case scenario you better trim.
Now if you var_dump the result you can see that the array needs to
be reindexed array_values($fragments)
You should try this: basename
basename — Returns trailing name component of path
<?php
echo basename("https://review-test.com/#/c/123456/");
?>
Demo : http://codepad.org/9Ah83qaP
Subsequently you can directly take from pure regex to fetch numbers from string,
preg_match('!\d+!', "https://review-test.com/#/c/123456/", $matches);
print_r($matches);
Working demo
Simply:
$tmp = explode( '/', $completeUrl).end();
It will explode the string by '/' and take the last element
If you have no other option than regex, for your example data you could use preg_match to split your url instead of preg_replace.
An approach could be to
Capture the first part as a group (.+\/)
Then capture your number as a group (\d+)
Followed by a forward slash at the end of the line \/$/
This will take the last number from the url followed by a forward slash.
Then you could use list and skip the first item of the $matches array because that will contain the text that matched the full pattern.
$completeURL = "https://review-test.com/#/c/123456/";
preg_match('/(.+\/)(\d+)\/$/', $completeURL, $matches);
list(, $url, $number) = $matches;

How to remove part of the string from one character to another in php

I have a URL string like
http://mydomain.com/status/statusPages/state/stack:3/my_link_id:1#state-9
I want to remove my_link_id:1 from this string. I know I can use any string replace function like
$goodUrl = str_replace('my_link_id:1', '', $badUrl);
But the problem is, the integer part is dynamic. I mean in my_link_id:1 the 1 is dynamic. It is the ID of the link and it can be from 0 to any number. So I want to remove my_link_id:along with any dynamic number from the string.
What I think I should remove part of the string from last / to #. But how can I do that?
you can use regular expressions:
$goodUrl = preg_replace('/(my_link_id:[0-9]+)/ig', '', $badUrl);
You can use preg_replace() php function
http://in1.php.net/preg_replace
CODE:
<?php $string = "http://mydomain.com/status/statusPages/state/stack:3/my_link_id:1#state-9";
echo $result = preg_replace('/(my_link_id:[0-9]+)/si', '', $string);
?>
Output :
http://mydomain.com/status/statusPages/state/stack:3/#state-9
May following help you
$strUrl = "http://mydomain.com/status/statusPages/state/stack:3/my_link_id:1#state-9";
$finalUrl = preg_replace('/(my_link_id:[0-9]+)/i', '', $strUrl);
echo $finalUrl;
and If you want remove also last / and # you follow this code
$strUrl = "http://mydomain.com/status/statusPages/state/stack:3/my_link_id:1#state-9";
$finalUrl = preg_replace('/(\/my_link_id:[0-9]+#)/i', '', $strUrl);
echo $finalUrl;

php : Retrieving number in the URL

I have url in the following types
http://domain.com/1/index.php
http://domain.com/2/index.php
http://domain.com/3/index.php
http://domain.com/4/index.php
I need to retrieve only the number from the url .
for example,
when i visit http://domain.com/1/index.php , It must return 1.
Have a look at parse_url.
$url = parse_url('http://domain.com/1/index.php');
EDIT: Take a look at $_SERVER['REQUEST_URI'], to get the current URL. Use that instead of $url['path'].
Then you can split $url['path'] on /, and get the 1st element.
// use trim to remove the starting slash in 'path'
$path = explode('/', trim($url['path'], '/'));
$id = $path[0]; // 1
Given the information provided, this will do what you ask... it's not what I would call a robust solution:
$url = $_SERVER['PATH_INFO']; // e.g.: "http://domain.com/1/index.php";
$pieces = explode("/", $url);
$num = $pieces[3];
split the server path by forward slashes (explode('/', $_SERVER['REQUEST_PATH']);)
remove empty entry from the beginning
take the first element
make sure it is an integer (intval(), or a simple (int) cast).
No need to use regular expressions for this.
You use preg_match() to match the domain and get the 1st segment.
$domain = http://www.domain.com/1/test.html
preg_match("/http:\/\/.*\/(.*)\/.*/", "http://www.domain.com/1/test.html");
echo $matches[1]; // returns the number 1 in this example.

Function to remove GET variable with php

i have this URI.
http://localhost/index.php?properties&status=av&page=1
i am fetching basename of the URI using following code.
$basename = basename($_SERVER['REQUEST_URI']);
the above code gives me following string.
index.php?properties&status=av&page=1
i would want to remove the last variable from the string i.e &page=1. please note the value for page will not always be 1. keeping this in mind i would want to trim the variable this way.
Trim from the last position of the string till the first delimiter i.e &
Update :
I would like to remove &page=1 from the string, no matter in which position it is on.
how do i do this?
Instead of hacking around with regular expression you should parse the string as an url (what it is)
$string = 'index.php?properties&status=av&page=1';
$parts = parse_url($string);
$queryParams = array();
parse_str($parts['query'], $queryParams);
Now just remove the parameter
unset($queryParams['page']);
and rebuild the url
$queryString = http_build_query($queryParams);
$url = $parts['path'] . '?' . $queryString;
There are many roads that lead to Rome. I'd do it with a RegEx:
$myString = 'index.php?properties&status=av&page=1';
$myNewString = preg_replace("/\&[a-z0-9]+=[0-9]+$/i","",$myString);
if you only want the &page=1-type parameters, the last line would be
$myNewString = preg_replace("/\&page=[0-9]+/i","",$myString);
if you also want to get rid of the possibility that page is the only or first parameter:
$myNewString = preg_replace("/[\&]*page=[0-9]+/i","",$myString);
Thank you guys but i think i have found the better solution, #KingCrunch had suggested a solution i extended and converted it into function. the below function can possibly remove or unset any URI variable without any regex hacks being used. i am posting it as it might help someone.
function unset_uri_var($variable, $uri) {
$parseUri = parse_url($uri);
$arrayUri = array();
parse_str($parseUri['query'], $arrayUri);
unset($arrayUri[$variable]);
$newUri = http_build_query($arrayUri);
$newUri = $parseUri['path'].'?'.$newUri;
return $newUri;
}
now consider the following uri
index.php?properties&status=av&page=1
//To remove properties variable
$url = unset_uri_var('properties', basename($_SERVER['REQUEST_URI']));
//Outputs index.php?page=1&status=av
//To remove page variable
$url = unset_uri_var('page', basename($_SERVER['REQUEST_URI']));
//Outputs index.php?properties=&status=av
hope this helps someone. and thank you #KingKrunch for your solution :)
$pos = strrpos($_SERVER['REQUEST_URI'], '&');
$url = substr($_SERVER['REQUEST_URI'], 0, $pos - 1);
Documentation for strrpos.
Regex that works on every possible situation: /(&|(?<=\?))page=.*?(?=&|$)/. Here's example code:
$regex = '/(&|(?<=\?))page=.*?(?=&|$)/';
$urls = array(
'index.php?properties&status=av&page=1',
'index.php?properties&page=1&status=av',
'index.php?page=1',
);
foreach($urls as $url) {
echo preg_replace($regex, '', $url), "\n";
}
Output:
index.php?properties&status=av
index.php?properties&status=av
index.php?
Regex explanation:
(&|(?<=\?)) -- either match a & or a ?, but if it's a ?, don't put it in the match and just ignore it (you don't want urls like index.php&status=av)
page=.*? -- matches page=[...]
(?=&|$) -- look for a & or the end of the string ($), but don't include them for the replacement (this group helps the previous one find out exactly where to stop matching)
You could use a RegEx (as Chris suggests) but it's not the most efficient solution (lots of overhead using that engine... it's easy to do with some string parsing:
<?php
//$url="http://localhost/index.php?properties&status=av&page=1";
$base=basename($_SERVER['REQUEST_URI']);
echo "Basename yields: $base<br />";
//Find the last ampersand
$lastAmp=strrpos($base,"&");
//Filter, catch no ampersands found
$removeLast=($lastAmp===false?$base:substr($base,0,$lastAmp));
echo "Without Last Parameter: $removeLast<br />";
?>
The trick is, can you guarantee that $page will be stuck on the end? If it is - great, if it isn't... what you asked for may not always solve the problem.

PHP - strip URL to get tag name

I need to strip a URL using PHP to add a class to a link if it matches.
The URL would look like this:
http://domain.com/tag/tagname/
How can I strip the URL so I'm only left with "tagname"?
So basically it takes out the final "/" and the start "http://domain.com/tag/"
For your URL
http://domain.com/tag/tagname/
The PHP function to get "tagname" is called basename():
echo basename('http://domain.com/tag/tagname/'); # tagname
combine some substring and some position finding after you take the last character off the string. use substr and pass in the index of the last '/' in your URL, assuming you remove the trailing '/' first.
As an alternative to the substring based answers, you could also use a regular expression, using preg_split to split the string:
<?php
$ptn = "/\//";
$str = "http://domain.com/tag/tagname/";
$result = preg_split($ptn, $str);
$tagname = $result[count($result)-2];
echo($tagname);
?>
(The reason for the -2 is because due to the ending /, the final element of the array will be a blank entry.)
And as an alternate to that, you could also use preg_match_all:
<?php
$ptn = "/[a-z]+/";
$str = "http://domain.com/tag/tagname/";
preg_match_all($ptn, $str, $matches);
$tagname = $matches[count($matches)-1];
echo($tagname);
?>
Many thanks to all, this code works for me:
$ptn = "/\//";
$str = "http://domain.com/tag/tagname/";
$result = preg_split($ptn, $str);
$tagname = $result[count($result)-2];
echo($tagname);

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