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Full Discussion: Handling null input...
Top Forums Shell Programming and Scripting Handling null input... Post 302070964 by DrRo183 on Monday 10th of April 2006 09:15:54 PM
Old 04-10-2006
Handling null input...

Ok, so when a user inputs nothing, simply pressing enter when prompted for a phone number, I get a "./addrbkfct.sh: test: argument expected" error message. I have the following function:

Code:
addNumber(){
        echo "Phone number: \c";
        read number;
        echo $number;
        if [ -z $number ] ; then
                echo "WARNING: no number";
                addEmail "$1" "$2" "$number";
        else
                echo $number | egrep '[+]?[-]?[0-9]?[0-9]?[0-9]?[-]?[0-9][0-9][0-9][-]?[0-9][0-9][0-9][0-9]';
                if [ $? -eq 0 ] ; then
                        addEmail "$1" "$2" "$number";
                else
                        addNumber "$1" "$2";
                fi
        fi
}

 

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MSSQL_NUM_FIELDS(3)													       MSSQL_NUM_FIELDS(3)

mssql_num_fields - Gets the number of fields in result

SYNOPSIS
int mssql_num_fields (resource $result) DESCRIPTION
mssql_num_fields(3) returns the number of fields in a result set. PARAMETERS
o $result - The result resource that is being evaluated. This result comes from a call to mssql_query(3). RETURN VALUES
Returns the number of fields, as an integer. EXAMPLES
Example #1 mssql_num_fields(3) example <?php // Connect to MSSQL and select the database $link = mssql_connect('KALLESPCSQLEXPRESS', 'sa', 'phpfi'); mssql_select_db('php', $link); // Select some data from our database $data = mssql_query('SELECT [name], [age] FROM [php].[dbo].[persons]'); // Construct a table echo '<table border="1">'; $header = false; // Iterate through returned results while ($row = mssql_fetch_array($data)) { // Build the table header if (!$header) { echo '<thead>'; echo '<tr>'; for ($i = 1; ($i + 1) <= mssql_num_fields($data); ++$i) { echo '<td>' . ucfirst($row[$i]) . '</td>'; } echo '</tr>'; echo '</thead>'; echo '<tbody>'; $header = true; } // Build the row echo '<tr>'; foreach($row as $value) { echo '<td>' . $value . '</td>'; } echo '</tr>'; } // Close table echo '</tbody>'; echo '</table>'; // Clean up mssql_free_result($data); mssql_close($link); ?> SEE ALSO
mssql_query(3), mssql_fetch_field(3), mssql_num_rows(3). PHP Documentation Group MSSQL_NUM_FIELDS(3)
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