exec problem will not display to browser

[Anon]

Hi,

I'm trying to display to the browser the output of the exec function.

I'm validating XML docs against their schema using the application called SAXCount in the xerces C++ package by apache.

When a valid XML document is called in the command the browser displays the information correctly, but when I use an invalid XML document I get no output to the screen. Is this due to some error filehandler? If so how to I output this error message to STDOUT? I'm using both windows 2000 and UNIX.

The code I'm using is:
$query = "SAXCount -v=always -n -s ./xml/personal-schema-valid.xml";
$lastLine = exec($query, $AllOuput, $ReturnValue);

echo "START OUTPUT<pre>\n";
for ($i=0; $i<count($AllOuput); $i++)
echo $AllOuput[$i] ."<br>\n";
echo "</pre>END OUTPUT\n";

An example of a valid XML document:
START OUTPUT
./xml/personal-schema-valid.xml: 30 ms (37 elems, 20 attrs, 140 spaces, 128 chars)

END OUTPUT

Example of invalid document:
START OUTPUT

END OUTPUT

Thanks in advance if anyone knows how to do this.
Euan Cottee

[gid__]

I believe exec() only captures STDOUT, as if there's an error, the text is probably STDERR. So tack on a " 2>&1" to the end of your string to execute. This directs STDERR (2) to STDOUT (1).

$query = "SAXCount -v=always -n -s /xml/personal-schema-valid.xml 2>&1";

$lastLine = exec($query, $AllOuput, $ReturnValue);

[Anon]

Thanks heaps for that it works great. :-)

[xico]

bump!