Im trying to make a regex pattern for strings that contain [[Title#Night|Anchor]] or just [[Title|Anchor]] and extract Title and Anchor. Basically two variables, first part between [[ and | and second part between | and ]], no matter what type of characters are inside (excluding \n, \r).
I had tried writing different patterns and none worked like I wanted. The code can be seen here with a sample content that I need to apply to.
\[\[(.*?)|(.*?)\]\]
may this help you:
$str = ' [[Title#Night|Anchor]] ';
preg_match('/\[\[([\s\S]*?)\]\]/',$str,$match);
print_r(explode('|',$match[1]));
update:
preg_match('/\[\[([\s\S]*?)\|([\s\S]*?)\]\]/',$str,$match);
print_r($match);
update 2:
preg_match('/\[\[(.*?)\|(.*?)\]\]/',$str,$match);
print_r($match);
update 3:
preg_match('/\[\[([^|\n\r]*)\|([^\]\n\r]*)\]\]/',$str,$match);
print_r($match);
The following should work for alphanumeric entries, depends what you want Title or Anchor to contain.
\[\[([a-zA-Z0-9#]*)\|([a-zA-Z0-9]*)\]\]
Related
I have this text:
SYS.DBMS_SCHEDULER.RUN_JOB('CALCULO_AGIL_DT_POSTO');
I need this text:
CALCULO_AGIL_DT_POSTO
I have this regex in PHP:
'(?<=SYS\.DBMS_SCHEDULER\.RUN_JOB\()[^'].*(?<=\))
but it does not work properly.
I can't see the need for a look ahead here.
Just make a simple pattern like this:
$pattern = "/SYS\.DBMS_SCHEDULER\.RUN_JOB\([\'\"](.*?)[\'\"]\)\;/";
It will match what is in exactly this string between the ( and '.
I made it lazy just in case it finds another ') somewhere else.
https://regex101.com/r/c9Kl3E/2
Edit noticed now in your title you need to be able to match both ' and ".
Added that to the regex [\'\"]
this one should work too, get you gonna need group 2 :
^(.+?')([a-zA-Z_]+)?('.+)$
I've read the Best RegEx Trick Ever and tried to wrap my head around the other answers here on Stack Exchange and just can't seem to get it right. Take these three strings:
http://www.test.com/newyork/class-schedule
http://www.test.com/location/newyork/class-schedule
http://www.test.com/location/newyork/training
I need a regex that will extract the newyork from the first string and save it for a replace later, but will NOT match any part of the other strings. Also, for obscure reasons, I can not include http://www.test.com as a condition for matching (so I can't use anything before the slash that precedes newyork). Note that in this scenario, newyork could easily be chicago, atlanta, or any other city name with no spaces or punctuation.
The only thing I've been able to figure out that isolates only newyork in the first string is the following:
/.*\.com\/(.[^\/]*)\/class-schedule/g
However, this relies on using the URL first which I can't use.
Any ideas on how to achieve this WITHOUT using the URL?
[EDIT]
To clarify what I'm looking for, I'm trying to take the results from the first string and add "location" to it, still using regex. So:
http://www.test.com/newyork/class-schedule
would become
http://www.test.com/location/newyork/class-schedule
using something like
http://www.test.com/location/$1/class-schedule
Try this: ~/(\w+)/[-a-z]+?/?(?:\?.*?)*(:?\s|$)~gm
See it working here: https://regex101.com/r/4VMazZ/3.
So it will use the end of URL instead of the beginning and match only the word between slash 2 and 3 from the end. There can be a query string it will still work.
[EDIT 1]
I exchanged 2 chars doing typo in the end so it was capturing one extra group: /(\w+)/[-a-z]+?/?(?:\?.*?)*(?:\s|$). here: https://regex101.com/r/4VMazZ/4
If you use preg_match($pattern, $string, $matches); the result you want (newyork) will be in $matches[1];, $matches[0] contains everything.
You can see the captures in 'MATCH INFORMATION' panel on regex101 in my example!
[EDIT 2] after your comment.
If you want to replace the whole url you have to match the whole URL, something like this: .*?/(\w+)/[-a-z]+?/?(?:\?.*?)*(?:\s|$) will do in this example. See it working here: https://regex101.com/r/4VMazZ/5
[EDIT 3] Add capturing of last part for replacement.
So as you want to reuse last part you need to add capturing parenthesis: .*?/(\w+)/([-a-z]+?)/?(?:\?.*?)*(?:\s|$).
See it working here: https://regex101.com/r/4VMazZ/6
Could this work? See it here.
(?<=location\/|\.\w{3}\/|\.\w{2}\/)(?!location).*?(?=\/|$)
It matches everything following .xxx/ or .xx/ or location/. I don't know if one letter domain exist, in this case, you can add |\.\w\/ to the lookahead at the start of the regex.
(?<=location\/|\.\w{3}\/|\.\w{2}\/) is a lookahead, so it matches the following pattern only if preceded by location/ or .xxx or .xx
.*? matches every character (lazy)
(?=\/|$) end match if next character is / or on line end
Note: If location is counted as part of the url, I don't think what you are asking is possible in regex, as the city name could be anywhere in string. If so, then you could have a list of cities and check what part of the url matches one of them.
EDIT: You need the multiline m flag so $ also matches end of line
I am trying to match a string using two different patterns to work together.
My source string is something like this:
Text, white-spaces, new lines and more text then ^^^^<customtag>
I need to get a group (the second one) that would capture one caret or none then a formatted HTML-like tag. So the first group would capture anything else.
It means that the string above should output this:
(Group 1)Text, white-spaces, new lines and more text then ^^^
(Group 2)^<customtag>
In the source string carets may be one, none or up to two thousands.
I need a good pattern that matches all those carets except the last one.
The code below is what I tried.
preg_match_all('/([\s\S]*\^*)(\^?<\w+>)$/', $string, $matches);
Please note: I used [\s\S] instead of the dot to match any character as well as white-spaces and new lines too.
You may follow the below regex:
(?s)(.*)((\^|(?<!\^))<[^>]+>)
Live demo
PHP code:
preg_match_all('/(?s)(.*)((\^|(?<!\^))<[^>]+>)/', $string, $matches);
You can use as this:
preg_match_all('/(.*)((\^<[^>]*>)|([^\^]<[^>]*>))$/', $string, $matches);
See it working here: http://regexr.com?383g9
In this other link it is working fine: http://regex101.com/r/eQ3vV7
I want to get the "context" of a given search string. For example, for search string myself in the following line
Me, my dog and myself are going on a vacation.
I want to get dog and myself are going for N=2. So 2 words before match and 2 after.
Currently I match whole lines like this:
$lines = file($file->getFilename());
$lines = preg_grep('/'.$_POST['query'].'/', $lines);
preg_grep() is supposed to act like that, but it sounds like you would need preg_match() and in case you can have multiple instances of searched word in the text and want to find all of them preg_match_all()
The RegEx you're looking for is: (?:[^ ]+ ){0,2}myself(?: [^ ]+){0,2}
Explained demo here: http://regex101.com/r/pB3eW0
I designed it to match 2 words before and after if it can otherwise 1 word or even none.
The code allowing a variable N could look like this:
$fileData=file_get_contents($file->getFilename());
$n=2;
$query='myself';
preg_match_all('/(?:[^ ]+ ){0,'.$n.'}'.$query.'(?: [^ ]+){0,'.$n.'}/i',$fileData,$matches);
print_r($matches);
Remember to validate and escape user input and not just use it in functions as given!
I am trying to pull the anchor text from a link that is formatted this way:
<h3><b>File</b> : i_want_this</h3>
I want only the anchor text for the link : "i_want_this"
"variable_text" varies according to the filename so I need to ignore that.
I am using this regex:
<a href=\"\/en\/browse\/file\/variable_text\">(.*?)<\/a>
This is matching of course the complete link.
PHP uses a pretty close version to PCRE (PERL Regex). If you want to know a lot about regex, visit perlretut.org. Also, look into Regex generators like exspresso.
For your use, know that regex is greedy. That means that when you specify that you want something, follwed by anything (any repetitions) followed by something, it will keep on going until that second something is reached.
to be more clear, what you want is this:
<a href="
any character, any number of times (regex = .* )
">
any character, any number of times (regex = .* )
</a>
beyond that, you want to capture the second group of "any character, any number of times". You can do that using what are called capture groups (capture anything inside of parenthesis as a group for reference later, also called back references).
I would also look into named subpatterns, too - with those, you can reference your choice with a human readable string rather than an array index. Syntax for those in PHP are (?P<name>pattern) where name is the name you want and pattern is the actual regex. I'll use that below.
So all that being said, here's the "lazy web" for your regex:
<?php
$str = '<h3><b>File</b> : i_want_this</h3>';
$regex = '/(<a href\=".*">)(?P<target>.*)(<\/a>)/';
preg_match($regex, $str, $matches);
print $matches['target'];
?>
//This should output "i_want_this"
Oh, and one final thought. Depending on what you are doing exactly, you may want to look into SimpleXML instead of using regex for this. This would probably require that the tags that we see are just snippits of a larger whole as SimpleXML requires well-formed XML (or XHTML).
I'm sure someone will probably have a more elegant solution, but I think this will do what you want to done.
Where:
$subject = "<h3><b>File</b> : i_want_this</h3>";
Option 1:
$pattern1 = '/(<a href=")(.*)(">)(.*)(<\/a>)/i';
preg_match($pattern1, $subject, $matches1);
print($matches1[4]);
Option 2:
$pattern2 = '()(.*)()';
ereg($pattern2, $subject, $matches2);
print($matches2[4]);
Do not use regex to parse HTML. Use a DOM parser. Specify the language you're using, too.
Since it's in a captured group and since you claim it's matching, you should be able to reference it through $1 or \1 depending on the language.
$blah = preg_match( $pattern, $subject, $matches );
print_r($matches);
The thing to remember is that regex's return everything you searched for if it matches. You need to specify that only care about the part you've surrounded in parenthesis (the anchor text). I'm not sure what language you're using the regex in, but here's an example in Ruby:
string = 'i_want_this'
data = string.match(/<a href=\"\/en\/browse\/file\/variable_text\">(.*?)<\/a>/)
puts data # => outputs 'i_want_this'
If you specify what you want in parenthesis, you can reference it:
string = 'i_want_this'
data = string.match(/<a href=\"\/en\/browse\/file\/variable_text\">(.*?)<\/a>/)[1]
puts data # => outputs 'i_want_this'
Perl will have you use $1 instead of [1] like this:
$string = 'i_want_this';
$string =~ m/<a href=\"\/en\/browse\/file\/variable_text\">(.*?)<\/a>/;
$data = $1;
print $data . "\n";
Hope that helps.
I'm not 100% sure if I understand what you want. This will match the content between the anchor tags. The URL must start with /en/browse/file/, but may end with anything.
#(.*?)#
I used # as a delimiter as it made it clearer. It'll also help if you put them in single quotes instead of double quotes so you don't have to escape anything at all.
If you want to limit to numbers instead, you can use:
#(.*?)#
If it should have just 5 numbers:
#(.*?)#
If it should have between 3 and 6 numbers:
#(.*?)#
If it should have more than 2 numbers:
#(.*?)#
This should work:
<a href="[^"]*">([^<]*)
this says that take EVERYTHING you find until you meet "
[^"]*
same! take everything with you till you meet <
[^<]*
The paratese around [^<]*
([^<]*)
group it! so you can collect that data in PHP! If you look in the PHP manual om preg_match you will se many fine examples there!
Good luck!
And for your concrete example:
<a href="/en/browse/file/variable_text">([^<]*)
I use
[^<]*
because in some examples...
.*?
can be extremely slow! Shoudln't use that if you can use
[^<]*
You should use the tool Expresso for creating regular expression... Pretty handy..
http://www.ultrapico.com/Expresso.htm