mssql_field_type

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

mssql_field_type — Gets the type of a field

Warning

This function was REMOVED in PHP 7.0.0.

Alternatives to this function include:

说明

mssql_field_type ( resource $result [, int $offset = -1 ] ) : string

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

范例

Example #1 mssql_field_type() 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] FROM [php].[dbo].[persons]');

// Print the field type and length
echo '\'' . mssql_field_name($query, 0) . '\' is a type of ' . 
     strtoupper(mssql_field_type($query, 0)) . 
     '(' . mssql_field_length($query, 0) . ')';

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

以上例程的输出类似于：

'name' is a type of CHAR(50)

参见

User Contributed Notes

huib at bestia dot com 27-May-2005 03:18
If you need a more detailed discription of your column type,

This query shows your true datatypes like:

binary => binary
varbinary => varbinary
varchar => varchar
bit => bit
char => char
datetime => datetime
smalldatetime => smalldatetime
decimal => decimal
real => real
float => float
tinyint => tinyint
smallint => smallint
smallmoney => smallmoney
money => money
nchar => nchar
ntext => ntext
text => text
numeric => numeric
nvarchar => nvarchar
 

SELECT     sysobjects.name AS tableName, syscolumns.name AS columnName, systypes.name AS columnType
FROM         sysobjects INNER JOIN
                      syscolumns ON sysobjects.id = syscolumns.id INNER JOIN
                      systypes ON syscolumns.type = systypes.type AND syscolumns.xusertype = systypes.xusertype
nicholas at silverorange dot com 24-Mar-2005 06:39
The matching returned values for each of the common datatypes are:

binary => blob
varbinary => blob
varchar => char
bit => bit
char => char
datetime => datetime
smalldatetime => datetime
decimal => real
real => real
float => real
tinyint => int
smallint => int
smallmoney => money
money => money
nchar => char
ntext => text
text => text
numeric => numeric
nvarchar => char
rmorales at protel dot net dot mx 17-Jun-2003 11:46
Here i have an usable code for all u:

   I wanted to know if a field is nullable or if it's defined as a primary key, here are those functions definitions:

*Aditional Notes:
    if any of the tables are replicated in another database exactly , this code will not work well.

//-----to know if a field is nullable-------
function mssql_field_nullable($ip,$user,$pass,$table,$field)//starting from 1st field
{
      $conn=mssql_connect($ip,$user,$pass)or die;
      mssql_select_db('master');
      $result=mssql_query("SELECT syscolumns.isnullable
FROM sysobjects INNER JOIN
    syscolumns ON sysobjects.id = syscolumns.id WHERE sysobjects.name ='$table' AND syscolumns.isnullable = 1");
      $x=mssql_num_rows($result);
      mssql_close($conn);
      return ($x==1?1:0);

}
//-------to know if a field is a primary key-------
function mssql_field_key($ip,$user,$pass,$table,$field)//starting from 1st field
{
      $conn=mssql_connect($ip,$user,$pass)or die;
      mssql_select_db('master');
      $result=mssql_query("SELECT sysindexkeys.colid FROM sysobjects INNER JOIN sysindexkeys ON sysobjects.id = sysindexkeys.id WHERE sysobjects.name ='$table' AND sysindexkeys.colid = $field");
      $x=mssql_num_rows($result);
      mssql_close($conn);
      return ($x==1?1:0);

}
by R.M.R.A