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Top Forums UNIX for Dummies Questions & Answers How to correctly use an echo inside an echo? Post 302354802 by raja_kolluru on Saturday 19th of September 2009 11:40:18 PM
Old 09-20-2009
Quote:
Originally Posted by mokachoka
Bit of a weird one i suppose, i want to use an echo inside an echo... For example...

i have a script that i want to use to take users input and create another script. Inside this script it creates it also needs to use echos...

echo "echo "hello"" >$file
echo "echo "goodbye"" >$file

Why is this not correct?

Thanks.
A few observations here:
1. As suggested earlier, either "escape" the double quotes surrounding "hello" or use single quote i.e. use
Code:
 echo "echo \"Hello\" "
or echo "echo 'hello' "

2. By doing >$file two times the second echo (i.e. good bye) will over write $file. Instead use
Code:
 echo "echo 'goodbye'" >> $file

to append the contents of the echo into the file.
3. It is a best practice to refrain from creating elaborate scripts using the echo command. Instead use shell "here documents"
Code:
cat <<! > $file
echo "Hello" 
echo "Good bye" 
!

is certainly a lot cleaner.
 

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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)
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