Get string with PHP regular Expression

Question

I have a string like this

France Gros Frère et Sur Hte-Cote de Nuit Blc 2008 #wwww #bbbbb 8.5 Nice yellow fruit nose, some vanilla notes, good crispness http: // (www). example. com/23232

I want to extract the string after the 8.5 (In bold) we can use #wwww and #bbbbb they will remain as it is, without even change in number of characters.

This 8.5 can change it can be anything even a 7 or 3.2 etc.

Also how can i exclude a url from the end of the string ?

What is the best way to achieve this with minimum risk of error ?

@Anirudh i have an idea of exploding with #bbbbb and do something. I expect erros there, so i am looking for a better solution. — niksmac
– niksmac, Commented Jul 8, 2013 at 8:27

user2557188 · Accepted Answer · 2013-07-09 10:36:41Z

4

Quick & Dirty:

\#w+ \#b+ \d+(?:\.?\d+)? (.*)

Example:

<?php  
$string = "France Gros Frère et Sur Hte-Cote de Nuit Blc 2008 #wwww #bbbbb 8.5 Nice yellow fruit nose, some vanilla notes, good crispness";  
$regex = "/\#w+ \#b+ \d+(?:\.?\d+)? (.*)/";  
preg_match ($regex, $string, $output);

echo $output[1];
?>

But if there can be a string WITHOUT any number after #bbbbb, you better use this:

\#w+ \#b+\s*(?:\d+(?:\.\d+)?)?\s*(.*)

So you don't have to put any number after #bbbbb and you can use as many spaces as you like between #bbbbb, the number (if there's any) and the string you want to extract.

Most of it is optional, so your string could look like this:

blabla #w #bb Hello World

Or like this

blabla #wwwwwwwwwwwwwwww #bbb 1337 Hello World

Or like this:

#w #bHello World

You can see the result here

EDIT:

As requested, this one should also remove URLs inside of the string:

<?php  
$string = "France Gros Frère et Sur Hte-Cote de Nuit Blc 2008 #wwww #bbbbb 8.5 Nice yellow fruit nose, some vanilla notes, good crispness http://www.example.com/23232";  
$regex = "/\#w+ \#b+ \d+(?:\.?\d+)? (.*)/";  
preg_match ($regex, $string, $output);

if (isset($output[1])) {
    $regex = "!https?:\/\/(?:[\da-z\.-]+)\.(?:[a-z\.]{2,6})(?:[\/\w \.-]*)*\/?!";  
    $newString = trim(preg_replace ($regex, '', $output[1]));

    echo $newString;
} else {
    echo $string;
}
?>

The result should be:

Nice yellow fruit nose, some vanilla notes, good crispness

edited Jul 9, 2013 at 10:36

answered Jul 8, 2013 at 8:32

user2557188

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3 Comments

niksmac Over a year ago

Also how can i exclude a url from the end of the string ?

user2557188 Over a year ago

Do you want to exclude every URL or just specific URLs?

niksmac Over a year ago

Every URL from the end of string

Robert · Accepted Answer · 2013-07-08 08:33:21Z

2

Use simple regex

$a='France Gros FrÃ¨re et Sur Hte-Cote de Nuit Blc 2008 #wwww #bbbbb 8.5 Nice yellow fruit nose, some vanilla notes, good crispness';

preg_match('/\#bbbbb [0-9]+\.[0-9]+ (.*)/', $a, $match);

print_r($match);

[0-9]+ - is a number at least one or more

(.*) - is a subpattern for any character that goes after number.

echo $match[1]; prints what you want :)

answered Jul 8, 2013 at 8:33

Robert

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Comments

Community · Accepted Answer · 2020-06-20 09:12:55Z

Description

This regex will:

capture the entire string upto the url at the end, so the url can be excluded if it exists
capture the number after #wwww #bbbbb
allow the number to contain one or less decimal points

(.*?\#wwww\s\#bbbbb\s((?:\d+\.)?\d+).*?)(https?:\/\/\S*)?$

enter image description here

PHP Example

Sample Text

France Gros Frère et Sur Hte-Cote de Nuit Blc 2008 #wwww #bbbbb 8.5 Nice yellow fruit nose, some vanilla notes, good crispness http://www.example.com/23232

Code

<?php
$sourcestring="your source string";
preg_match('/(.*?\#wwww\s\#bbbbb\s((?:\d+\.)?\d+).*?)(https?:\/\/\S*)?$/imx',$sourcestring,$matches);
echo "<pre>".print_r($matches,true);
?>

Capture Groups

0 has the entire string
1 has the entire string excluding the url at the end if it exists
2 has the desired number
3 has the url

[0] => France Gros Frère et Sur Hte-Cote de Nuit Blc 2008 #wwww #bbbbb 8.5 Nice yellow fruit nose, some vanilla notes, good crispness http://www.example.com/23232
[1] => France Gros Frère et Sur Hte-Cote de Nuit Blc 2008 #wwww #bbbbb 8.5 Nice yellow fruit nose, some vanilla notes, good crispness 
[2] => 8.5
[3] => http://www.example.com/23232

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