i need a regex to search this: $var[prod_menu]
and replace with this: $var['prod_menu']
At the moment my regex make this: $var['rod_men']
My regex:
preg_replace('/\[[^\'](.*)[^\']\]/U', '['$1']', $input_lines);
Where is the error?
2 Answers
You should start the capturing group after the opening [ and close before the ]
Note that this part in your pattern [^\'](.*)[^\'] uses 2 times a negated character class which actually expects a minimum of 2 characters.
Another way to write your pattern could be using a negated character class matching not [, ], $ or a '
\[([^]\[$']+)\]
In the replacement use
['$1']
Or make the match more restrictive matching 1+ word characters.
\[(\w+)\]
5 Comments
MarkusHH
Yes that work but there is another litle problem. It always replaces this $var[$test] to $var['$test']
The fourth bird
@MarkusHH What is the expected outcome? You could also match 1+ word chars to make the match more specific
\[(\w+)\] See regex101.com/r/TL4QyL/1MarkusHH
$var[$test] should stay $var[$test], only replace if string in brackets
The fourth bird
@MarkusHH Or exclude the dollar sign from the match
\[([^]\[$']+)\] See regex101.com/r/n7Ttjt/1MarkusHH
[(\w+)] That's it!! Thank your very much.
Just change your capture group to include the extra chars at the start and end...
preg_replace('/\[([^\'].*[^\'])\]/U', "['$1']", $input_lines);
(I've also fixed the problem with quotes in '['$1']').
1 Comment
Toto
This will not work if the keys is less than 3 character long (i.e.
array[i])
_beforevar. What code have you really got?