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Full Discussion: Trouble with tr
Operating Systems Solaris Trouble with tr Post 302084320 by Mike@Work on Thursday 10th of August 2006 11:34:24 AM
Old 08-10-2006
Trouble with tr

I'm not sure where to post this but it's happening on a SunOS 5.8 server so I'll try here.

I've discovered some unexpected behavior when using tr.

For example:
echo a | tr [a-z] [A-Z]
Z

echo b | tr [a-z] [A-Z]
a

echo a | tr [a-b] [A-Z]
B

echo a | tr [a-b] [A-B]
B

echo a | tr [:lower:] [:upper:]
A

BUT! is you su to the same user you get the following behavior.

echo a | tr [a-z] [A-Z]
A

echo b | tr [a-z] [A-Z]
B

echo a | tr [a-b] [A-Z]
A

echo a | tr [a-b] [A-B]
A

echo a | tr [:lower:] [:upper:]
A


The tr was being used in a script where the normal way to run the script was to login as user A and then su to user B and run the script. But someone decided to run the script with out the su part and discovered this.

Any body have an explanation?
 

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MSSQL_FIELD_SEEK(3)													       MSSQL_FIELD_SEEK(3)

mssql_field_seek - Seeks to the specified field offset

SYNOPSIS
bool mssql_field_seek (resource $result, int $field_offset) DESCRIPTION
Seeks to the specified field offset. If the next call to mssql_fetch_field(3) won't include a field offset, this field would be returned. PARAMETERS
o $result - The result resource that is being evaluated. This result comes from a call to mssql_query(3). o $field_offset - The field offset, starts at 0. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 Using mssql_field_seek(3) on the example for mssql_fetch_field(3) <?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, notice the // field_offset parameter is not set. See // the mssql_field_seek call below $field = mssql_fetch_field($query); // Print the row echo '<tr>'; echo '<td>' . $field->name . '</td>'; echo '<td>' . strtoupper($field->type) . '</td>'; echo '<td>' . $field->max_length . '</td>'; echo '</tr>'; // Move the internal seek pointer to the next // row in the result set mssql_field_seek($query, $i + 1); } echo '</tbody>'; echo '</table>'; // Free the query result mssql_free_result($query); ?> SEE ALSO
mssql_fetch_field(3). PHP Documentation Group MSSQL_FIELD_SEEK(3)
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