Quite simple problem (but difficult solution): I got a string in PHP like as follows:
['one']['two']['three']
And from this, i must extract the last tags, so i finally got three
it is also possible that there is a number, like
[1][2][3]
and then i must get 3
How can i solve this?
Thanks for your help!
Flo
Your tag is \[[^\]]+\].
3 Tags are: (\[[^\]]+\]){3}
3 Tags at end are: (\[[^\]]+\]){3}$
N Tags at end are: (\[[^\]]+\])*$ (N 0..n)
Example:
<?php
$string = "['one']['two']['three'][1][2][3]['last']";
preg_match("/((?:\[[^\]+]*\]){3})$/", $string, $match);
print_r($match); // Array ( [0] => [2][3]['last'] [1] => [2][3]['last'] )
ereg("\[[^\]]+\]",$string), but it wont work. And another thing, all regex functions are marked as deprecated on php.net :S ...
This tested code may work for you:
function getLastTag($text) {
$re = '/
# Match contents of last [Tag].
\[ # Literal start of last tag.
(?: # Group tag contents alternatives.
\'([^\']+)\' # Either $1: single quoted,
| (\d+) # or $2: un-quoted digits.
) # End group of tag contents alts.
\] # Literal end of last tag.
\s* # Allow trailing whitespace.
$ # Anchor to end of string.
/x';
if (preg_match($re, $text, $matches)) {
if ($matches[1]) return $matches[1]; // Either single quoted,
if ($matches[2]) return $matches[2]; // or non quoted digit.
}
return null; // No match. Return NULL.
}
Here is a regex that may work for you. Try this:
[^\[\]']*(?='?\]$)
asdf['one']asdf['two']asdf['three']asdf?