I need to slice a string into 2 parts, such that, for example, if the string is "4s5ee9f8fg", I need it as "4598 seeffg"
I'm trying with this:
$string2 = '132xx';
preg_match("/[0-9]+/",trim($string2),$result);
echo $result[0];
echo $result[1];
Here I'm getting just numeric characters, but not alphabetic characters.
Can anyone give a solution?
You're on the right track with what you have.
You are currently only trying to get the numeric characters, which is why that's all you are getting. Also, after some testing with different strings, it turned out that your particular regex seems to only works when all the numbers are next to each other. I figured out a way to do this with preg_replace instead of preg_match.
Try this:
$string2 = '4s5ee9f8fg';
$result1 = preg_replace("/[A-z]+/", "", trim($string2));
$result2 = preg_replace("/[0-9]+/", "", trim($string2));
$finalResult = $result1." ".$result2;
echo $finalResult."\n";
Related
I have following issue:
I import WKT dynamicaly from DB into WKT Wicket Javascript library. I must do some substitutions to fit the WKT correctly. Since mysql fetches WKT AsText(SHAPE) i recive several arrays e.g. POLYGON((xxxx)),POLYGON((yyyy)) and so on.
First, I had to remove all "POLYGON" doing
$str = preg_replace('/^POLYGON/', '', $WKT[1]);
and add MULTIPOLYGON before <?php
tag in the wicket. It works.
Second, I must add comma between polygons, preicisely between "))((" brackets:
$str2 = str_replace(array('((', '))'), array('((', ')),'), $str);
It works but last comma remains what "slightly" deforms my multipolygon:
MULTIPOLYGON((xxx)),((yyy)),((zzz)),
How can I remove last comma?
I would be thankful for every regex or some other solution which can solve my problem.
In any string, you can remove the last X if you are sure that no X follows. So, you can use a negative lookahead: (,)(?!.*,), as seen here and replace it with empty string.
$result = preg_replace('/(,)(?!.*,)/', '', $str)
This doesn't look at the context though, it will just remove the last comma of any string, no matter where it is.
Thank you both - your answers were right and very helpful.
The problem was not string replacement. It was more the data fetching from DB.
Mysqli_fetch_array and mysqli_fetch_assoc return stringstringsring or arrayarrayarray for 3 rows fetched. That is why all commas were replaced.
I changed to mysqli_fetch_all ,then did minor replacements for each row (as array) and implode each one as variable. After i merged them into single variable, then I could apply your solutions. It is not sofisticated solution, but if it is packed into function it'll be fine.
($WKT = mysqli_fetch_all($result)) {
$str = preg_replace('/POLYGON/', '', $WKT[0]);
$str1 = preg_replace('/POLYGON/', '', $WKT[1]);
$str2 = preg_replace('/POLYGON/', '', $WKT[2]);
$str3 = implode($str);
$str4 = implode($str1);
$str5 = implode($str2);
$str6 = $str3 . $str4 . $str5;
$str7 = preg_replace('/\)\)/', ')),', $str6);
$str8 = rtrim($str7, ",");
echo $str8;
}
My questions is somewhat based off this:
How can I get the last 7 characters of a PHP string?
Mine is similar. I need to get the last x characters of a string and to stop when I reach "-"
for example, I have a booking code:
N-903
and I can get the last 3 characters like so:
$booking_Code = N-903
$booking_Code = substr($booking_Code, -3);
and the result will be:
903
This number however will increase, so I expect to see booking codes like:
N-1001
N-22520
N-201548
so the code:
substr($booking_Code, -3);
would become useless. Is there any way to use "-" as a delimiter? I think that's the correct term to use. because the number that's generated will always come after the hyphen "-". Any help would be greatly appreciated
try this
<?php
$tmpArray = explode("-",$mystr);
echo $tmpArray[1];
?>
You might want to refer to explode function in php.
As an alternative, you could also use strrchr in conjunction with the substr you have:
$booking_Code = 'N-903';
$booking_Code = substr(strrchr($booking_Code, '-'), 1);
echo $booking_Code; // 903
I was once asked a question in an interview that if we have 2 strings, how we can get a part of matching string from these two?
for example
$str1 = "My name is baig";
$str2 = "Baig is a nice person";
now i want the output
"i a e s g" and other matching letters
I want this in Php
Thanks in advance
this is code to get the expected result for two string str1 and str2
<?php
$str1 = strtolower("My name is baig");
$str2 = strtolower("Baig is a nice person");
$array1 = explode(' ',$str1);
$array2 = explode(' ',$str2);
$result = array_intersect($array2, $array1);
print_r(implode(' ',$result));
?>
Well you have several options...
If you want matches in a specific order, meaning is a string inside another string, you might go for strstr, if you want to find any common point between 2 strings, you might want to first find an explode pattern, in your case a space.
Expode both string and intersect both arrays.
You can use array_intersect after use the function explode on your string.
A working example :
http://codepad.org/IikNr2Vv
But this is case sensitive, Baig will be different of baig.
To resolve this, you can use the strtolower function to transform to lower cas all your string.
got the following answer from another forum
<?php
$str1 = "My name is baig";
$str2 = "Baig is a nice person";
$r1 = str_split(preg_replace("/[^a-zA-z]/","",strtolower($str1)));
$r2 = str_split(preg_replace("/[^a-zA-z]/","",strtolower($str2)));
$match = array_unique(array_intersect($r1,$r2));
$match = implode(" ",$match);
echo "Matched letters are: ".$match;
?>
Case sensitivity is still an issue but i will go through it
$vari = "testing 245";
$numb = 0..9;
$numb_pos = strpos($vari,$numb);
echo substr($vari,0,$numb_pos);
The $numb is numbers from 0 to 9
Where am I wrong here, all I need to echo is testing
You want to cut out the numbers from a string?
$string = preg_replace('/(\d+)/', '', 'String with 1234 numbers');
Use a regular expression to strip numeric characters from your string.
or, use a regular expression to find the first instance of one either way...
Your code won't work as-is, as it'll fail if the number if the first character in the string. (You need to check $numb_pos !== false prior to the substr.)
Irrespective, if you just want to check for the existance of a number in a string, something like the following would probably be more efficient.
$digitMatched = preg_match('/\\d/im', $vari);
So I'm working on a project that will allow users to enter poker hand histories from sites like PokerStars and then display the hand to them.
It seems that regex would be a great tool for this, however I rank my regex knowledge at "slim to none".
So I'm using PHP and looping through this block of text line by line and on lines like this:
Seat 1: fabulous29 (835 in chips)
Seat 2: Nioreh_21 (6465 in chips)
Seat 3: Big Loads (3465 in chips)
Seat 4: Sauchie (2060 in chips)
I want to extract seat number, name, & chip count so the format is
Seat [number]: [letters&numbers&characters] ([number] in chips)
I have NO IDEA where to start or what commands I should even be using to optimize this.
Any advice is greatly appreciated - even if it is just a link to a tutorial on PHP regex or the name of the command(s) I should be using.
I'm not entirely sure what exactly to use for that without trying it, but a great tool I use all the time to validate my RegEx is RegExr which gives a great flash interface for trying out your regex, including real time matching and a library of predefined snippets to use. Definitely a great time saver :)
Something like this might do the trick:
/Seat (\d+): ([^\(]+) \((\d+)in chips\)/
And some basic explanation on how Regex works:
\d = digit.
\<character> = escapes character, if not part of any character class or subexpression. for example:
\t
would render a tab, while \\t would render "\t" (since the backslash is escaped).
+ = one or more of the preceding element.
* = zero or more of the preceding element.
[ ] = bracket expression. Matches any of the characters within the bracket. Also works with ranges (ex. A-Z).
[^ ] = Matches any character that is NOT within the bracket.
( ) = Marked subexpression. The data matched within this can be recalled later.
Anyway, I chose to use
([^\(]+)
since the example provides a name containing spaces (Seat 3 in the example). what this does is that it matches any character up to the point that it encounters an opening paranthesis.
This will leave you with a blank space at the end of the subexpression (using the data provided in the example). However, his can easily be stripped away using the trim() command in PHP.
If you do not want to match spaces, only alphanumerical characters, you could so something like this:
([A-Za-z0-9-_]+)
Which would match any letter (within A-Z, both upper- & lower-case), number as well as hyphens and underscores.
Or the same variant, with spaces:
([A-Za-z0-9-_\s]+)
Where "\s" is evaluated into a space.
Hope this helps :)
Look at the PCRE section in the PHP Manual. Also, http://www.regular-expressions.info/ is a great site for learning regex. Disclaimer: Regex is very addictive once you learn it.
I always use the preg_ set of function for REGEX in PHP because the PERL-compatible expressions have much more capability. That extra capability doesn't necessarily come into play here, but they are also supposed to be faster, so why not use them anyway, right?
For an expression, try this:
/Seat (\d+): ([^ ]+) \((\d+)/
You can use preg_match() on each line, storing the results in an array. You can then get at those results and manipulate them as you like.
EDIT:
Btw, you could also run preg_match_all on the entire block of text (instead of looping through line-by-line) and get the results that way, too.
Check out preg_match.
Probably looking for something like...
<?php
$str = 'Seat 1: fabulous29 (835 in chips)';
preg_match('/Seat (?<seatNo>\d+): (?<name>\w+) \((?<chipCnt>\d+) in chips\)/', $str, $matches);
print_r($matches);
?>
*It's been a while since I did php, so this could be a little or a lot off.*
May be it is very late answer, But I am interested in answering
Seat\s(\d):\s([\w\s]+)\s\((\d+).*\)
http://regex101.com/r/cU7yD7/1
Here's what I'm currently using:
preg_match("/(Seat \d+: [A-Za-z0-9 _-]+) \((\d+) in chips\)/",$line)
To process the whole input string at once, use preg_match_all()
preg_match_all('/Seat (\d+): \w+ \((\d+) in chips\)/', $preg_match_all, $matches);
For your input string, var_dump of $matches will look like this:
array
0 =>
array
0 => string 'Seat 1: fabulous29 (835 in chips)' (length=33)
1 => string 'Seat 2: Nioreh_21 (6465 in chips)' (length=33)
2 => string 'Seat 4: Sauchie (2060 in chips)' (length=31)
1 =>
array
0 => string '1' (length=1)
1 => string '2' (length=1)
2 => string '4' (length=1)
2 =>
array
0 => string '835' (length=3)
1 => string '6465' (length=4)
2 => string '2060' (length=4)
On learning regex: Get Mastering Regular Expressions, 3rd Edition. Nothing else comes close to the this book if you really want to learn regex. Despite being the definitive guide to regex, the book is very beginner friendly.
Try this code. It works for me
Let say that you have below lines of strings
$string1 = "Seat 1: fabulous29 (835 in chips)";
$string2 = "Seat 2: Nioreh_21 (6465 in chips)";
$string3 = "Seat 3: Big Loads (3465 in chips)";
$string4 = "Seat 4: Sauchie (2060 in chips)";
Add to array
$lines = array($string1,$string2,$string3,$string4);
foreach($lines as $line )
{
$seatArray = explode(":", $line);
$seat = explode(" ",$seatArray[0]);
$seatNumber = $seat[1];
$usernameArray = explode("(",$seatArray[1]);
$username = trim($usernameArray[0]);
$chipArray = explode(" ",$usernameArray[1]);
$chipNumber = $chipArray[0];
echo "<br>"."Seat [".$seatNumber."]: [". $username."] ([".$chipNumber."] in chips)";
}
you'll have to split the file by linebreaks,
then loop thru each line and apply the following logic
$seat = 0;
$name = 1;
$chips = 2;
foreach( $string in $file ) {
if (preg_match("Seat ([1-0]): ([A-Za-z_0-9]*) \(([1-0]*) in chips\)", $string, $matches)) {
echo "Seat: " . $matches[$seat] . "<br>";
echo "Name: " . $matches[$name] . "<br>";
echo "Chips: " . $matches[$chips] . "<br>";
}
}
I haven't ran this code, so you may have to fix some errors...
Seat [number]: [letters&numbers&characters] ([number] in chips)
Your Regex should look something like this
Seat (\d+): ([a-zA-Z0-9]+) \((\d+) in chips\)
The brackets will let you capture the seat number, name and number of chips in groups.