This regex finds the right string, but only returns the first result. How do I make it search the rest of the text?
$text =",415.2109,520.33970,495.274100,482.3238,741.5634
655.3444,488.29980,741.5634";
preg_match("/[^,]+[\d+][.?][\d+]*/",$text,$data);
echo $data;
Follow up:
I'm pushing the initial expectations of this script, and I'm at the point where I'm pulling out more verbose data. Wasted many hours with this...can anyone shed some light?
heres my string:
155.101.153.123:simple:mass_mid:[479.0807,99.011, 100.876],mass_tol:[30],mass_mode: [1],adducts:[M+CH3OH+H],
130.216.138.250:simple:mass_mid:[290.13465,222.34566],mass_tol:[30],mass_mode:[1],adducts:[M+Na],
and heres my regex:
"/mass_mid:[((?:\d+)(?:.)(?:\d+)(?:,)*)/"
I'm really banging my head on this one! Can someone tell me how to exclude the line mass_mid:[ from the results, and keep the comma seperated values?
Use preg_match_all rather than preg_match
From the PHP Manual:
(`preg_match_all`) searches subject for all matches to the regular expression given in pattern and puts them in matches in the order specified by flags.
After the first match is found, the subsequent searches are continued on from end of the last match.
http://php.net/manual/en/function.preg-match-all.php
Don't use a regex. Use split to split apart your inputs on the commas.
Regexes are not a magic wand you wave at every problem that happens to involve strings.
Description
To extract a list of numeric values which may include a single decimal point, then you could use this regex
\d*\.?\d+
PHP Code Example:
<?php
$sourcestring=",415.2109,520.33970,495.274100,482.3238,741.5634
655.3444,488.29980,741.5634";
preg_match_all('/\d*\.?\d+/im',$sourcestring,$matches);
echo "<pre>".print_r($matches,true);
?>
yields matches
$matches Array:
(
[0] => Array
(
[0] => 415.2109
[1] => 520.33970
[2] => 495.274100
[3] => 482.3238
[4] => 741.5634
[5] => 655.3444
[6] => 488.29980
[7] => 741.5634
)
)
Related
i have a problem with preg_match , i cant figure it out.
let the code say it :
function::wp_statistics_useronline::end
function::wp_statistics_visitor|today::end
function::wp_statistics_visitor|yesterday::end
function::wp_statistics_visitor|week::end
function::wp_statistics_visitor|month::end
function::wp_statistics_visitor|total::end
these are some string that run functions inside php;
when i use just one function::*::end it works just fine.
but when it contain more than one function , not working the way i want
it parse the match like :
function::wp_statistics_useronline::end function::wp_statistics_visitor|today::end AND ....::end
so basically i need Regex code that separate them and give me an array for each function::*::end
I assume you were actually using function::(.*)::end since function::*::end is never going to work (it can only match strings like "function::::::end").
The reason your regex failed with multiple matches on the same line is that the quantifier * is greedy by default, matching as many characters as possible. You need to make it lazy: function::(.*?)::end
It's pretty straight forward:
$result = preg_match_all('~function::(\S*)::end~m', $subject, $matches)
? $matches[1] : [];
Which gives:
Array
(
[0] => wp_statistics_useronline
[1] => wp_statistics_visitor|today
[2] => wp_statistics_visitor|yesterday
[3] => wp_statistics_visitor|week
[4] => wp_statistics_visitor|month
[5] => wp_statistics_visitor|total
)
And (for the second example):
Array
(
[0] => wp_statistics_useronline
[1] => wp_statistics_visitor|today
)
The regex in the example is a matching group around the part in the middle which does not contain whitespace. So \S* is a good fit.
As the matching group is the first one, you can retrieve it with $matches[1] as it's done after running the regular expression.
This is what you're looking for:
function\:\:(.*?)\:
Make sure you have the dot matches all identifier set.
After you get the matches, run it through a forloop and run an explode on "|", push it to an array and boom goes the dynamite, you've got what you're looking for.
This is a question for the regex gurus.
If I have a series of xml nodes, I would like to parse out (using regex) the contained node values that exist on the same level as my current node. For instance, if I have:
<top-node>
Hi
<second-node>
Hello
<inner-node>
</inner-node>
</second-node>
Hey
<third-node>
Foo
</third-node>
Bar
<top-node>
I would like to retrieve an array that is:
array(
1 => 'Hi',
2 => 'Hey',
3 => 'Bar'
)
I know I can start with
$inside = preg_match('~<(\S+).*?>(?P<inside>(.|\s)*)</\1>~', $original_text);
and that will retrieve the text sans the top-node.
However, the next step is a bit beyond my regex abilities.
EDIT: Actually, that preg_match appears only to work if the $original_text is all on the same line. Additionally, I think I can use a preg_split with a very similar regex to retrieve what I am looking for- it just isn't working across multiple lines.
NOTE: I appreciate and will oblige any requests for clarification; however, my question is pretty specific and I mean what I am asking, so don't give an answer like "go use SimpleXML" or something. Thank you for any and all assistance.
Description
This regex will capture the first level of text
(?:[\s\r\n]*<([^>\s]+)\s?(?:[^>=]|='[^']*'|="[^"]*"|=[^'"][^\s>]*)*>.*?<\/\1>)?[\s\r\n]*\K(?!\Z)(?:(?![\s\r\n]*(?:<|\Z)).)*1
Expanded
(?:[\s\r\n]*<([^>\s]+)\s?(?:[^>=]|='[^']*'|="[^"]*"|=[^'"][^\s>]*)*>.*?<\/\1>)? # match any open tags until the close tags if they exist
[\s\r\n]* # match any leading spaces or new line characters
\K # reset the capture and only capture the desired substring which follows
(?!\Z) # validate substring is not the end of the string, this prevents the phantom empty array value at the end
(?:(?![\s\r\n]*(?:<|\Z)).)* # capture the text inside the current substring, this expression is self limiting and will stop when it sees whitespace ahead followed by end of string or a new tag
Example
Sample Text
This is assuming you've removed the first top level tags
Hi
<second-node>
Hello
<inner-node>
</inner-node>
</second-node>
Hey
<third-node>
Foo
</third-node>
Bar
Capture Groups
0: is the actual captured group
1: is the name of the subtag which is then back referenced inside the regex
[0] => Array
(
[0] => Hi
[1] => Hey
[2] => Bar
)
[1] => Array
(
[0] =>
[1] => second-node
[2] => third-node
)
Disclaimer
This solution will get hung up on nested structures like:
Hi
<second-node>
Hello
<second-node>
</second-node>
This string will be found
</second-node>
Hey
Based on your own idea, using a preg_split I came up with:
$raw="<top-node>
Hi
<second-node>
Hello
<inner-node>
</inner-node>
</second-node>
Hey
<third-node>
Foo
</third-node>
Bar
</top-node>";
$reg='~<(\S+).*?>(.*?)</\1>~s';
preg_match_all($reg, $raw, $res);
$res = explode(chr(31), preg_replace($reg, chr(31), $res[2][0]));
Note, chr(31) is the 'unit seperator'
Testing resulting array with:
echo ("<xmp>start\n" . print_r($res, true) . "\nfin</xmp>");
That seems to work for 1 node, giving you the array you asked for, but it will probably have all sorts of problems with it.. You might want to trim the returned values to.
EDIT:
Denomales' answer is probably better..
I'm trying to use a more complex regex and preg_split on a string to get an array of all matches and keep the delimiter. Normally this would be simple, but trying to use PREG_SPLIT_DELIM_CAPTURE and having multiple sets of parentheses in my regex is proving to be difficult. I'll elaborate:
I want to parse an IP address in a line and break the whole line into an array so I can do something with only the IP specifically, but I want to display the entire line eventually (I'm applying formatting to the IP and then re-assembling and displaying the string). My regex for that is this (it checks for something that looks like an IP, but it doesn't check validity, I don't care at this point):
(((\d{1,3})\.){3}(\d{1,3}))
Now, my code for the time being is this:
$ipv4regex = "/(((\d{1,3}).){3}(\d{1,3}))/";
if (contains_ipv4($line)){
$pieces = preg_split($ipv4regex, $line, 0, PREG_SPLIT_DELIM_CAPTURE);
print "<pre>";
print_r($pieces);
print "</pre>";
}
function contains_ipv4($val){
return (preg_match($ipv4regex, $val));
}
And here is a sample of my output (IP address changed, but still relevant):
Array
(
[0] => show arp results from
[1] => 10.10.15.120
[2] => 15.
[3] => 15
[4] => 120
[5] =>
)
How can I change it so that the output is as follows:
(
[0] => show arp results from
[1] => 10.10.15.120
[2] =>
)
Essentially I want to capture only the outer-most parentheses in my regex for PREG_SPLIT_DELIM_CAPTURE, and not the inner ones. I know that I can change my regex for this particular case, but I've got a "proper" IPv6 regex with a LOT of parentheses and I'm afraid that it will be near impossible to rewrite with only one set of parentheses on the outside. Could anyone help me out? I'd greatly appreciate it. Or, if there's an entirely different means to my end that I'm missing, feel free to point me in that direction.
You can desactivate parentheses capturing by adding ?: just after the open parentheses, for example :
((?:(?:\d{1,3})\.){3}(?:\d{1,3}))
I managed to reduce the overall clutter of the method and improved it to use only a few lines of code:
if (preg_match($ipv4regex, $line)){
$line = preg_replace_callback($ipv4regex, 'add_ipv4_p', $line);
}
I then print the line later on, but this simple bit is all I need for regex checking
The method add_ipv4_p is the method I use to apply formatting to the first element of the array passed to it. Simple. I was able to add more formatting options to the code by just re-using this snippet and changing the regex and formatting method.
i have this string ++++++1DESIGNRESULTSM25Fe415(Main)
and i have similar string about 2000 lines from which i want to split these..
[++++++] [1] [DESIGNRESULTS] [M25] [Fe415] [(Main)]
from the pattern only the 2nd 4h and 5th value changes
eg.. ++++++2DESIGNRESULTSM30Fe418(Main) etc..
what i actually want is:
Split the first value [++++++]
Split the value after 4 Character of [DESIGNRESULTS] so ill get this [M25]
Split the value before 4 Character of [(Main)] so ill get this [Fe415]
After all this done store the final chunk of piece in an array.
the similar output what i want is
Array ( [0] => 1 [1] => M25 [2] => Fe415 )
Please help me with this...
Thanks in advance :)
Your data split needs are a bit unclear. A regular expression that will get separate matches on each of the chunks you first specify:
(\++)(\d)(DESIGNRESULTS)(M\d\d)(Fe\d\d\d)(\(Main\))
If you only need the two you are asking for at the end, you can use
(\d)DESIGNRESULTS(M\d\d)(Fe\d\d\d)
You could also replace \d\d with \d+ if the number of digits is unknown.
However, based on your examples it looks like each string chunk is a consistent length. It would be even faster to use
array(
substr($string, 6, 1)
//...
)
How about this
$str = "++++++1DESIGNRESULTSM25Fe415(Main)";
$match = array();
preg_match("/^\+{0,}(\d)DESIGNRESULTS(\w{3})(\w{5})/",$str,$match);
array_shift($match);
print_r($match);
Consider the following Strings:
1: cccbbb
2: cccaaabbb
I would like to end up with are matches like this:
1: Array
(
[1] =>
[2] => bbb
)
2: Array
(
[1] => aaa
[2] => bbb
)
How can I match both in one RegExp?
Here's my try:
#(aaa)?(.*)$#
I have tried many variants of greedy and ungreedy modifications but it doesn't work out. As soon as I add the '?' everything is matched in [2]. Making [2] ungreedy doesn't help.
My RegExp works as expected if I omit the 'ccc', but I have to allow other characters at the beginning...
/(aaa)?((.)\3*)$/
There will be an extra [3] though. I don't think that's a problem.
Thanks for the brainstorming here guys! I have finally been able to figure something out that's working:
^(?:([^a]*)(aaa))?(.*)$
here's a non-regex way. search and split on "aaa" if found, then store the rest of the right side of "aaa" into array.
$str="cccaaabbb";
if (strpos($str,"aaa")!==FALSE){
$array[]="aaa";
$s = explode("aaa",$str);
$array[]=end($s);
}
print_r($array);
output
$ php test.php
Array
(
[0] => aaa
[1] => bbb
)
As for [1], depending on what's your criteria when "aaa" is not found, it can be as simple as getting the substring from character 4 onwards using strpos().
this will match the groups but its not very flexible can you put a little more detail of what you need to do. It may be much easier to grab three characters a time and evaluate them.
Also I tested this in poweshell which has a slightly different flavor of regex.
(a{3,3})*(b{3,3})
do like this:
$sPattern = "/(aaa?|)(bbb)/";
this works well.