ereg question

hi all

can anyone tell me, does this condition evaluate to true or false?

$foo = ereg('ca?t', 'caaaaaaat');

thanks

marc

monomaniac21 <mcyi2mr3@googlemail.comwrote:

Quote:

hi all
>
can anyone tell me, does this condition evaluate to true or false?
>
$foo = ereg('ca?t', 'caaaaaaat');

False afaik. Forget the POSIX functions, use preg_match();

To match 'cat' or 'ct':
preg_match('/ca?t/',$string);

To match 'cat', 'caat','caaat' etc.
preg_match('/ca+t/',$string);

To match 'ct','cat', 'caat','caaat' etc.
preg_match('/ca*t/',$string);
--
Rik Wasmus

Regex reference:
http://en.wikipedia.org/wiki/Regular_expression
It basic but it works.

'ca?t' translated in to English:

find the string 'ct' or 'cat'

? - match 1 or 0 occurrences

+ - match 1 or more occurrences 'cat' 'ca...at'

* - match 0 or more occurrences 'ct' 'cat' 'ca...at'

There is more but see the link above.

If you're looking to interactively test regex, why not use something
like Regex Coach? http://weitz.de/regex-coach/

Very good tool. I can't live without it. Windows only though, as far
as I know.

On Jan 26, 2:01 pm, mvand...@gmail.com wrote:

Quote:

Regex reference:http://en.wikipedia.org/wiki/Regular_expression
It basic but it works.
>
'ca?t' translated in to English:
>
find the string 'ct' or 'cat'
>
? - match 1 or 0 occurrences
>
+ - match 1 or more occurrences 'cat' 'ca...at'
>
* - match 0 or more occurrences 'ct' 'cat' 'ca...at'
>
There is more but see the link above.

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