if/else regex expression not working correctly in matching numbers

[dsaba]

I'm trying to match php like function declarations that have 1 argument in them.

The problem is matching proper digits with an if/else expression.

The root of the problem is here:

(??=\.)[\d]+|\d+\.?\d*)

 

 

Full pattern:

(?<![\w_])[a-z][\w_]*\s*\(\s*(((?<![\$\w_])[\$a-z][\w_]*(?![\$\w_]|\s*\()\s*=\s*)?((?<![\$\w_])[\$a-z][\w_]*(?![\$\w_]|\s*\()|"[^"]*"|(??=\.)[\d]+|\d+\.?\d*)))\s*\)

 

 

Haystack:

thisFunc("hello"); //yes

thisFunc($var = "hello"); //yes

name(var = var); //yes

name(var = 2.3); //yes
name(var = 2.3.); //no
name(.5) //yes [here is the problem it doesn't match here]
name(var = .58) //yes [here is problem, it doesn't match here]
name(var = .5. //no

 

So how can I match these numbers?

either .23 or 0.23, it doesn't match .23 types

 

Thanks for looking.

[dsaba]

changed it to this and works as expected:

(\d+|\.\d+|\d+\.\d*)

 

if you've got a better idea, let me know