mssql_field_type

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

mssql_field_type — Gets the type of a field

说明

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

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

mssql_field_length() - Get the length of a field
mssql_field_name() - Get the name of a field

用户评论:

huib at bestia dot com (2005-05-27 03:18:33)

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 (2005-03-24 06:39:57)

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 (2003-06-17 23:46:23)

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