08-27-2007
Help in dealing with arra
I am readinga file lin by line and based craeting a arry of unique elemenst from the second column of the line. However when i coem out of the while loop my array becomes empty , can eny one tell me what I would be doing wrong
#!/bin/bash
logfile="./mylog.dat"
begin=100
end="$(( $begin + 1000 ))!d"
index=0
Isthere=0
ENGINES=""
sed "$begin, $end" $logfile | while read line
do
i=`echo $line | awk -F "," '{print $2}'`
Isthere=0
for item in "${ENGINES[@]}" ; do
if [ "$i" = "$item" ] ; then
echo "Aleady there "
Isthere=1
break
fi
done
if [ "$Isthere" -eq 0 ] ; then
echo "adding $Isthere"
ENGINES[$index]=`expr $i`
index=$(( $index + 1))
fi
# echo $line
done
echo $index ${#ENGINES[@]} # howe ever at this point array is empty
for i in "${ENGINES[@]}" ; do
echo $i
done
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LEARN ABOUT PHP
mssql_fetch_field
MSSQL_FETCH_FIELD(3) MSSQL_FETCH_FIELD(3)
mssql_fetch_field - Get field information
SYNOPSIS
object mssql_fetch_field (resource $result, [int $field_offset = -1])
DESCRIPTION
mssql_fetch_field(3) can be used in order to obtain information about fields in a certain query result.
PARAMETERS
o $result
- The result resource that is being evaluated. This result comes from a call to mssql_query(3).
o $field_offset
- The numerical field offset. If the field offset is not specified, the next field that was not yet retrieved by this function is
retrieved. The $field_offset starts at 0.
RETURN VALUES
Returns an object containing field information.
The properties of the object are:
o name - column name. if the column is a result of a function, this property is set to computed#N, where #N is a serial number.
o column_source - the table from which the column was taken
o max_length - maximum length of the column
o numeric - 1 if the column is numeric
o type - the column type.
EXAMPLES
Example #1
mssql_fetch_field(3) example
<?php
// Connect to MSSQL and select the database
mssql_connect('MANGOSQLEXPRESS', 'sa', 'phpfi');
mssql_select_db('php');
// Send a select query to MSSQL
$query = mssql_query('SELECT * FROM [php].[dbo].[persons]');
// Construct table
echo '<h3>Table structure for 'persons'</h3>';
echo '<table border="1">';
// Table header
echo '<thead>';
echo '<tr>';
echo '<td>Field name</td>';
echo '<td>Data type</td>';
echo '<td>Max length</td>';
echo '</tr>';
echo '</thead>';
// Dump all fields
echo '<tbody>';
for ($i = 0; $i < mssql_num_fields($query); ++$i) {
// Fetch the field information
$field = mssql_fetch_field($query, $i);
// Print the row
echo '<tr>';
echo '<td>' . $field->name . '</td>';
echo '<td>' . strtoupper($field->type) . '</td>';
echo '<td>' . $field->max_length . '</td>';
echo '</tr>';
}
echo '</tbody>';
echo '</table>';
// Free the query result
mssql_free_result($query);
?>
SEE ALSO
mssql_field_seek(3).
PHP Documentation Group MSSQL_FETCH_FIELD(3)