Last updated: Mon, 12 Sep 2005

LXXXI. mSQL Functions

简介

These functions allow you to access mSQL database servers. More information about mSQL can be found at http://www.hughes.com.au/.

安装

In order to have these functions available, you must compile PHP with msql support by using the --with-msql[=DIR] option. DIR is the mSQL base install directory, defaults to /usr/local/msql3.

Note to Win32 Users: In order to enable this module on a Windows environment, you must copy msql.dll from the DLL folder of the PHP/Win32 binary package to the SYSTEM32 folder of your windows machine. (Ex: C:\WINNT\SYSTEM32 or C:\WINDOWS\SYSTEM32)

运行时配置

这些函数的行为受 php.ini 的影响。

表格 1. mSQL configuration options

Name	Default	Changeable
msql.allow_persistent	"1"	PHP_INI_ALL
msql.max_persistent	"-1"	PHP_INI_ALL
msql.max_links	"-1"	PHP_INI_ALL

有关 PHP_INI_* 常量进一步的细节与定义参见附录 G。

以下是配置选项的简要解释。

msql.allow_persistent boolean: Whether to allow persistent mSQL connections.
msql.max_persistent integer: The maximum number of persistent mSQL connections per process.
msql.max_links integer: The maximum number of mSQL connections per process, including persistent connections.

资源类型

There are two resource types used in the mSQL module. The first one is the link identifier for a database connection, the second a resource which holds the result of a query.

预定义常量

以下常量由本扩展模块定义，因此只有在本扩展模块被编译到 PHP 中，或者在运行时被动态加载后才有效。

MSQL_ASSOC (integer)
MSQL_NUM (integer)
MSQL_BOTH (integer)

范例

This simple example shows how to connect, execute a query, print resulting rows and disconnect from a mSQL database.

例子 1. mSQL usage example


<?php

/* Connecting, selecting database */

$link = msql_connect('localhost', 'username', 'password')

    or die('Could not connect : ' . msql_error($link));



msql_select_db('database', $link)

    or die('Could not select database');



/* Issue SQL query */

$query = 'SELECT * FROM my_table';

$result = msql_query($query, $link) or die('Query failed : ' . msql_error($link));



/* Printing results in HTML */

echo "<table>\n";

while ($row = msql_fetch_array($result, MSQL_ASSOC)) {

    echo "\t<tr>\n";

    foreach ($row as $col_value) {

        echo "\t\t<td>$col_value</td>\n";

    }

    echo "\t</tr>\n";

}

echo "</table>\n";



/* Free result set */

msql_free_result($result);



/* Close connection */

msql_close($link);

?>

目录
msql_affected_rows -- Returns number of affected rows
msql_close -- Close mSQL connection
msql_connect -- Open mSQL connection
msql_create_db -- Create mSQL database
msql_createdb -- 别名 msql_create_db()
msql_data_seek -- Move internal row pointer
msql_db_query -- Send mSQL query
msql_dbname -- 别名 msql_result()
msql_drop_db -- Drop (delete) mSQL database
msql_error -- Returns error message of last msql call
msql_fetch_array -- Fetch row as array
msql_fetch_field -- Get field information
msql_fetch_object -- Fetch row as object
msql_fetch_row -- Get row as enumerated array
msql_field_flags -- Get field flags
msql_field_len -- Get field length
msql_field_name -- Get the name of the specified field in a result
msql_field_seek -- Set field offset
msql_field_table -- Get table name for field
msql_field_type -- Get field type
msql_fieldflags -- Alias of msql_field_flags()
msql_fieldlen -- Alias of msql_field_len()
msql_fieldname -- Alias of msql_field_name()
msql_fieldtable -- Alias of msql_field_table()
msql_fieldtype -- Alias of msql_field_type()
msql_free_result -- Free result memory
msql_list_dbs -- List mSQL databases on server
msql_list_fields -- List result fields
msql_list_tables -- List tables in an mSQL database
msql_num_fields -- Get number of fields in result
msql_num_rows -- Get number of rows in result
msql_numfields -- Alias of msql_num_fields()
msql_numrows -- Alias of msql_num_rows()
msql_pconnect -- Open persistent mSQL connection
msql_query -- Send mSQL query
msql_regcase -- Alias of sql_regcase()
msql_result -- Get result data
msql_select_db -- Select mSQL database
msql_tablename -- Alias of msql_result()
msql -- Alias of msql_db_query()

add a note User Contributed Notes
mSQL Functions

acroyear at io dot com
15-May-2000 02:11


To those porting code from w3-msql/lite to php, a few functions are different or missing (aside from the fact that the order of arguments is reversed and the other signatures are different...not good design work, imho, or was it built for msql 1.x?  At any rate, conformity with the C and Lite API should have been maintained.).



The lite/C function msqlStoreResult() is automatically done in msql_query() and msql().  

msql_fetch_field() doesn't give you the field length value (unlike msqlFetchField()).  You have to call msql_fieldlen() to get that.



msqlEncode() is missing.  The functionality (which is needed for pretty much ALL SQL based rdbms's) is in addSlashes() in the String library.

add a note

msql_affected_rows

msession_unlock

Last updated: Mon, 12 Sep 2005