Array problem


 
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Old 05-27-2008
Array problem

I am using /bin/ksh for this problem.

I have created some arrays with variable names as the array names:

cnt=1
{ while read myline; do
tempmeas="${meas%%;*}"
cto="${meas#*;}"
tempstream=$stream

# wholemeas holds the name of the array
# each array name will look like MEAS1, MEAS2, MEAS3....
# and the data goes into each array correctly
wholemeas=`eval echo \`echo "MEAS"$cnt\``
eval $wholemeas[1]="\$tempmeas"
eval $wholemeas[2]="\$cto"
eval $wholemeas[3]="\$stream"
((cnt=cnt+1))
done } < $dspbfile

Now, I am trying to get the information back out of the arrays. I can get it out if I specify the name directly:

echo ${MEAS1[1]}

This give me the correct answer I am looking for. Now, when I do this:

cnt=1
wholemeas=`echo "MEAS"$cnt`

I do get wholemeas=MEAS1[1]. Then when I try to get the value from that position in the array:

echo ${$wholemeas[1]}

I get this error:

./PDSBatch.ksh[341]: ${$wholemeas[1]}: bad substitution

I have tried eval, echo, quotes, back quotes and all the other combinations I can think of. Does anyone know how I can get the values from the arrays while using the wholemeas method of specifying the array names? Thanks.

Allyson
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MSQL_FETCH_ARRAY(3)													       MSQL_FETCH_ARRAY(3)

msql_fetch_array - Fetch row as array

SYNOPSIS
array msql_fetch_array (resource $result, [int $result_type]) DESCRIPTION
msql_fetch_array(3) is an extended version of msql_fetch_row(3). In addition to storing the data in the numeric indices of the result array, it also stores the data in associative indices, using the field names as keys. An important thing to note is that using msql_fetch_array(3) is NOT significantly slower than using msql_fetch_row(3), while it provides a significant added value. PARAMETERS
o $ result -The result resource that is being evaluated. This result comes from a call to msql_query(3). o $result_type - A constant that can take the following values: MSQL_ASSOC, MSQL_NUM, and MSQL_BOTH with MSQL_BOTH being the default. RETURN VALUES
Returns an array that corresponds to the fetched row, or FALSE if there are no more rows. EXAMPLES
Example #1 msql_fetch_array(3) example <?php $con = msql_connect(); if (!$con) { die('Server connection problem: ' . msql_error()); } if (!msql_select_db('test', $con)) { die('Database connection problem: ' . msql_error()); } $result = msql_query('SELECT id, name FROM people', $con); if (!$result) { die('Query execution problem: ' . msql_error()); } while ($row = msql_fetch_array($result, MSQL_ASSOC)) { echo $row['id'] . ': ' . $row['name'] . " "; } msql_free_result($result); ?> CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.0.4 | | | | | | | A bug was fixed when retrieving data from col- | | | umns containing NULL values. Such columns were | | | not placed into the resulting array. | | | | +--------+---------------------------------------------------+ SEE ALSO
msql_fetch_row(3), msql_fetch_object(3), msql_data_seek(3), msql_result(3). PHP Documentation Group MSQL_FETCH_ARRAY(3)