If I have a domain e.g. www.example.com/w/
I want to be able to get the whole string of text appended after the URL, I know how to get parameters in format ?key=value, that's not what I'm looking for.
but I would like to get everything after the /w/ prefix, the whole string altogether so if someone appended after the above
www.example.com/w/https://www.nytimes.com/2019/04/17/us/politics/trump-mueller-report.html
I would be able to get https://www.nytimes.com/2019/04/17/us/politics/trump-mueller-report.html
I was thinking of installing codeigniter on my server if that helps, but at the moment I'm just using core php
You just need to use str_replace()
$str = "www.example.com/w/https://www.nytimes.com/2019/04/17/us/politics/trump-mueller-report.html";
$str2 = str_replace('www.example.com/w/', '', $str);
echo $str2;
Output
https://www.nytimes.com/2019/04/17/us/politics/trump-mueller-report.html
Read more about str_replace()
Try this, with strpos and substr
$str = "www.example.com/w/https://www.nytimes.com/2019/04/17/us/politics/trump-mueller-report.html";
echo $str.'<pre>';
$start = strpos($str, '/w/');
echo substr($str, $start + 3);die;
Output:
www.example.com/w/https://www.nytimes.com/2019/04/17/us/politics/trump-mueller-report.html
https://www.nytimes.com/2019/04/17/us/politics/trump-mueller-report.html
strpos() will give you first occurrence of /w/ and from there you can do substr with +3 to remove /w/
OR Try this, with strstr and str_replace
$str = "www.example.com/w/https://www.nytimes.com/2019/04/17/us/politics/trump-mueller-report.html";
echo $str.'<pre>';
$str1 = strstr($str, '/w/');
echo $str1.'<pre>';
$str2 = str_replace('/w/', '', $str1);
echo $str2.'<pre>';die;
Output:
www.example.com/w/https://www.nytimes.com/2019/04/17/us/politics/trump-mueller-report.html
/w/https://www.nytimes.com/2019/04/17/us/politics/trump-mueller-report.html
https://www.nytimes.com/2019/04/17/us/politics/trump-mueller-report.html
strstr() will give you substring with given /w/ and use str_replace() to remove /w/from new string
Related
How can I do the following with php?
This is my example:
http://www.example.com/index.php?&xx=okok&yy=no&bb=525252
I want remove this part: &yy=no&bb=525252
I just want this result:
http://www.example.com/index.php?&xx=okok
I tried this :
$str = 'bla_string_bla_bla_bla';
echo preg_replace('/bla_/', '', $str, 1); ;
but this not what I want.
Going for preg_replace was a good start. But you need to learn about regexes.
This will work:
$str = 'http://www.example.com/index.php?&xx=okok&yy=no&bb=525252';
echo preg_replace ('/&yy.+$/', '', $str);
Here the regex is &yy.+$
Let's see how this works:
&yy matches &yy obviously
.+ matches everything ...
$ ... until the end of the string.
So here, my replacement says : Replace whatever begins by &yy until the end of the string by nothing, which is actually simply deleting this part.
You can do this:
$a = 'http://www.example.com/index.php?&xx=okok&yy=no&bb=525252';
$b = substr($a,0,strpos($a,'&yy')); // Set in '&yy' the string to identify the beginning of the string to remove
echo $b; // Will print http://www.example.com/index.php?&xx=okok
Are you always expecting the end part to have the 'yy' variable name? You could try this:
$str = 'http://www.example.com/index.php?&xx=okok&yy=no&bb=525252';
$ex = explode('&yy=', $str, 2);
$firstPart = $ex[0];
How can I use str_replace method for replacing a specified portion(between two substrings).
For example,
string1="www.example.com?test=abc&var=55";
string2="www.example.com?test=xyz&var=55";
I want to replace the string between '?------&' in the url with ?res=pqrs&. Are there any other methods available?
You could use preg_replace to do that, but is that really what you are trying to do here?
$str = preg_replace('/\?.*?&/', '?', $input);
If the question is really "I want to remove the test parameter from the query string" then a more robust alternative would be to use some string manipulation, parse_url or parse_str and http_build_query instead:
list($path, $query) = explode('?', $input, 2);
parse_str($query, $parameters);
unset($parameters['test']);
$str = $path.'?'.http_build_query($parameters);
Since you're working with URL's, you can decompose the URL first, remove what you need and put it back together like so:
$string1="www.example.com?test=abc&var=55";
// fetch the part after ?
$qs = parse_url($string1, PHP_URL_QUERY);
// turn it into an associative array
parse_str($qs, $a);
unset($a['test']); // remove test=abc
$a['res'] = 'pqrs'; // add res=pqrs
// put it back together
echo substr($string1, 0, -strlen($qs)) . http_build_query($a);
There's probably a few gotchas here and there; you may want to cater for edge cases, etc. but this works on the given inputs.
Dirty version:
$start = strpos($string1, '?');
$end = strpos($string1, '&');
echo substr($string1, 0, $start+1) . '--replace--' . substr($string1, $end);
Better:
preg_replace('/\?[^&]+&/', '?--replace--&', $string1);
Depending on whether you want to keep the ? and &, the regex can be mofidied, but it would be quicker to repeat them in the replaced string.
Think of regex
<?php
$string = 'www.example.com?test=abc&var=55';
$pattern = '/(.*)\?.*&(.*)/i';
$replacement = '$1$2';
$replaced = preg_replace($pattern, $replacement, $string);
?>
I have a string, "Chicago-Illinos1" and I want to add one to the end of it, so it would be "Chicago-Illinos2".
Note: it could also be Chicago-Illinos10 and I want it to go to Chicago-Illinos11 so I can't do substr.
Any suggested solutions?
Complex solutions for a really simple problem...
$str = 'Chicago-Illinos1';
echo $str++; //Chicago-Illinos2
If the string ends with a number, it will increment the number (eg: 'abc123'++ = 'abc124').
If the string ends with a letter, the letter will be incremeted (eg: '123abc'++ = '123abd')
Try this
preg_match("/(.*?)(\d+)$/","Chicago-Illinos1",$matches);
$newstring = $matches[1].($matches[2]+1);
(can't try it now but it should work)
$string = 'Chicago-Illinois1';
preg_match('/^([^\d]+)([\d]*?)$/', $string, $match);
$string = $match[1];
$number = $match[2] + 1;
$string .= $number;
Tested, works.
explode could do the job aswell
<?php
$str="Chicago-Illinos1"; //our original string
$temp=explode("Chicago-Illinos",$str); //making an array of it
$str="Chicago-Illinos".($temp[1]+1); //the text and the number+1
?>
I would use a regular expression to get the number at the end of a string (for Java it would be [0-9]+$), increase it (int number = Integer.parse(yourNumberAsString) + 1), and concatenate with Chicago-Illinos (the rest not matched by the regular expression used for finding the number).
You can use preg_match to accomplish this:
$name = 'Chicago-Illinos10';
preg_match('/(.*?)(\d+)$/', $name, $match);
$base = $match[1];
$num = $match[2]+1;
print $base.$num;
The following will output:
Chicago-Illinos11
However, if it's possible, I'd suggest placing another delimiting character between the text and number. For example, if you placed a pipe, you could simply do an explode and grab the second part of the array. It would be much simpler.
$name = 'Chicago-Illinos|1';
$parts = explode('|', $name);
print $parts[0].($parts[1]+1);
If string length is a concern (thus the misspelling of Illinois), you could switch to the state abbreviations. (i.e. Chicago-IL|1)
$str = 'Chicago-Illinos1';
echo ++$str;
http://php.net/manual/en/language.operators.increment.php
Want to process a set of strings, and trim some ending "myEnding" from the end of each string if it exists.
What is the simplest way to do it?
I know that everything is possible with regexp, but thus seems to be a simple task, and I wonder whether a simpler tool for this exists.
Thanks
Gidi
ima go with preg_replace on this one.
$output = preg_replace('/myEnding$/s', '', $input);
Try this:
$s = "foobarmyEnding";
$toRemove = "myEnding";
$len = strlen($toRemove);
if (strcmp(substr($s, -$len, $len), $toRemove) === 0)
{
$s = substr($s, 0, -$len);
}
ideone
rtrim http://php.net/manual/en/function.rtrim.php
$str = "foobarmyEnding";
$str = rtrim($str, 'myEnding');
// str == "foobar"
ltrim is the same deal for the start of a string http://php.net/manual/en/function.ltrim.php
You could also use str_replace to replace a search term with with an empty string but its slower then rtrim/ltrim if you need to amend the start or end of a string
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);