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mssql_field_length

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mssql_field_length

(PHP 4, PHP 5, PECL odbtp >= 1.1.1)

mssql_field_lengthGet the length of a field

说明

int mssql_field_length ( resource $result [, int $offset = -1 ] )

Returns the length of field no. offset in result.

参数

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.

返回值

The length of the specified field index on success 或者在失败时返回 FALSE.

范例

Example #1 mssql_field_length() 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 [name], [age] FROM [php].[dbo].[persons]');

// Print the field length
echo 'The field 'age' has a data length of ' mssql_field_length($query1);

// Free the query result
mssql_free_result($query);
?>

以上例程的输出类似于:

The field 'age' has a data length of 4

注释

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.

参见


  • mssql_bind
  • mssql_close
  • mssql_connect
  • mssql_data_seek
  • mssql_execute
  • mssql_fetch_array
  • mssql_fetch_assoc
  • mssql_fetch_batch
  • mssql_fetch_field
  • mssql_fetch_object
  • mssql_fetch_row
  • mssql_field_length
  • mssql_field_name
  • mssql_field_seek
  • mssql_field_type
  • mssql_free_result
  • mssql_free_statement
  • mssql_get_last_message
  • mssql_guid_string
  • mssql_init
  • mssql_min_error_severity
  • mssql_min_message_severity
  • mssql_next_result
  • mssql_num_fields
  • mssql_num_rows
  • mssql_pconnect
  • mssql_query
  • mssql_result
  • mssql_rows_affected
  • mssql_select_db
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