Help with regular expression

[GregArtemides]

if (!ereg("([0-9]{9})\(xml)|(txt))","123457890.txt&quot) echo "error!";

What's wrong with this regular expression? I need one that will check a filename has 9 numeric digits and a .txt or .xml extension.
The one above should echo the error since it's 10 digits long before the dot, but it doesn't work.
Where did I go wrong?

 

[danielhozac]

Your regular expression is invalid. Try this one:
[tt]if (!ereg("([0-9]{9})\.(xml|txt)","123457890.txt&quot) echo "error!";[/tt]

//Daniel

 

[skiflyer]

You're really close there, but you need to bind that regular expression to the front and end of the string. The problem is that a regular expression like that will find any string which has nine numbers followed by a .txt|.xml, it doesn't care what comes before the nine numbers or what comes after the .txt or .xml

That leaves you with

if (!ereg("^([0-9]{9})\.(xml|txt)","1245789320.txt")) echo "error!";

-Rob

 

[skiflyer]

Shoot I got it half right, I mean

if (!ereg("^([0-9]{9})\.(xml|txt)$","1245789320.txt")) echo "error!";

-Rob

 

[GregArtemides]

Thanks skiflyer, your solutions works! So I was forgetting the ^ and $, but when I put them it worked just fine. And thanks danilhozac for trying.