[UPHPU] Alternative ways to accomplish the same thing

[Dave Smith]

Scott Hill wrote:
> Call to ItmsMaintenanceWS 
> failedjavax.ejb.EJBTransactionRolledbackException:
> com.tess.common.exception.TessRuntimeException: There was an error
> validating the card. [INVALID CARD]
>    at 
> org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:89)
>    at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130)
>    at 
> org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java
> :196)
>
> I only needed the text found in the []'s to display the error to the 
> user.

I use regular expressions for this kind of stuff. That way, the pattern 
you are looking for is stored declaratively instead of algorithmically 
(making it much easier to read and change later). Here's how I did your 
example:

    $matches = array();
    if( preg_match( '/\[([^\]]+)\]/', $response->faultstring, $matches ) )
    {
         echo $matches[1] . "\n";
    }


That is admittedly a funky regular expression, because '[' and ']' are 
special characters so you have to escape them to use them literally. You 
might be tempted to use .* instead of the [^\]], but don't. That could 
lead to funkiness because .* is greedy.

Enjoy!

--Dave