there are same problem with VARBINARY, if you are forced to use existing database with such fields you can do it like this:
SELECT CAST(master.dbo.fn_varbintohexstr(VARBINARYFIELD) AS TEXT) FROM table;
mssql_field_length
(PHP 4, PHP 5, PECL odbtp >= 1.1.1)
mssql_field_length — Get the length of a field
說明
int mssql_field_length
( resource
$result
[, int $offset = -1
] )
Returns the length of field no. offset in
result.
參數
-
result -
The result resource that is being evaluated. This result comes from a call to mssql_query().
-
offset -
The field offset, starts at 0. If omitted, the current field is used.
回傳值
The length of the specified field index on success 或者在失敗時回傳 FALSE.
範例
Example #1 mssql_field_length() example
<?php
// Connect to MSSQL and select the database
mssql_connect('MANGO\SQLEXPRESS', 'sa', 'phpfi');
mssql_select_db('php');
// Send a select query to MSSQL
$query = mssql_query('SELECT [name], [age] FROM [php].[dbo].[persons]');
// Print the field length
echo 'The field \'age\' has a data length of ' . mssql_field_length($query, 1);
// Free the query result
mssql_free_result($query);
?>
上例的輸出類似於：
The field 'age' has a data length of 4
註釋
Note: Note to Windows Users
Due to a limitation in the underlying API used by PHP (MS DBLib C API), the length of VARCHAR fields is limited to 255. If you need to store more data, use a TEXT field instead.
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User Contributed Notes 2 notes
zz(lost dot childz at gmail dot com) ¶
16 years ago
