mssql_fetch_batch

(PHP 4 >= 4.0.4, PHP 5, PECL odbtp >= 1.1.1)

mssql_fetch_batch — Returns the next batch of records

Warning

This function was REMOVED in PHP 7.0.0.

说明

mssql_fetch_batch ( resource $result ) : int

Returns the next batch of records.

参数

result: The result resource that is being evaluated. This result comes from a call to mssql_query().

返回值

Returns the number of rows in the returned batch.

范例

Example #1 mssql_fetch_batch() example


<?php
// Connect to MSSQL and select the database
$link = mssql_connect('MANGO\SQLEXPRESS', 'sa', 'phpfi');
mssql_select_db('php', $link);

// Send a query
$result = mssql_query('SELECT * FROM [php].[dbo].[people]', $link, 100);
$records = 10;

while ($records >= 0) {
    while ($row = mssql_fetch_assoc($result)) {
        // Do stuff ...
    }

    --$records;
}

if ($batchsize = mssql_fetch_batch($result)) {
    // $batchsize is the number of records left 
    // in the result, but not shown above
}
?>

add a note

User Contributed Notes 4 notes

down

salvarez at jetmultimedia dot es ¶

5 years ago


If you are doing more than one mssql_query(), you must do a mssql_free_result() to avoid undesirable results of mssql_fetch_batch()

down

jeffreznik ¶

6 years ago


I was having issues doing two different select queries with batch sizes in the same connection.  The first one would run fine, the second one would always return one batch + 1 record (ie. batch size on the 2nd query was 250000 records, it would stop after 250001 and say it was complete even though there should have been 3m+ records).

I was able to overcome this by disconnecting from the DB (via mssql_close($conn);) and reconnecting before I ran the second query.  Now my second query returns all the records I need.

Though I would write this here as there is little to no documentation on this issue, and it may only be affecting me.  I am connecting from Linux (RHEL5) to SQL Server 2005 on the network, using FreeTDS.  If you have this same issue, try the above and it may work for you.

down

doug dot pe at gmail dot com ¶

6 years ago


This demonstrates the return value:
<?php
$connect = mssql_connect("databasename", "username", "password");
$sql = "SELECT * FROM huge_table";    //    returns 3271 rows, for example
$qry = mssql_query($SQL, $connect, 1000); // 1000 Rows batchsize
$batchsize = mssql_num_rows($qry);
print "$batchsize <br />\r\n";
do {
    $batchsize = mssql_fetch_batch($qry);
    print "$batchsize <br />\r\n";
} while ($batchsize);  // get the next batch until end
?>
returns:
1000
1000
1000
271
0

down

brutalex430 ¶

8 years ago


This could be usefull if you have a large dataset:

<?php
$qry = mssql_query("SELECT * FROM huge_table", $conn, 1000); // 1000 Rows batchsize

    do {
      while ($row = mssql_fetch_row($qry)) {
          // do something like
          print_r($row);
      }
    } while (mssql_fetch_batch($navqry));  // get the next batch until end

?>

add a note

官方地址：https://www.php.net/manual/en/function.mssql-fetch-batch.php

有任何技术问题请点击这里网站运营推广招聘

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络 JAVA NoSQL 数据库面试 C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

php7 安装fileinfo扩展 preg_split — 通过一个正则表达式分隔字符串 php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题 [PHP] inet_pton/inet_ntop IP地址转换函数 array_multisort() 多字段排序 PHPMailer设置utf8 PHPMailer字符集CharSet ADORecordSet对象 adodb手册 PHP 8.1 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 opcache预加载 Composer的Packagist资源 mysql面试题 [鸟哥]PHP FFI详解 - 一种全新的PHP扩展方式 PHP7添加redis扩展 PHP获取指定函数定义在哪个文件中及行号 PHP mkdir()写出来的权限与mode值不符合 adodb连接mysql多个数据库的问题利用php soap实现web service ADOConnection 公用函数

略微加速

PHP官方手册 - 互联网笔记

mssql_fetch_batch

说明

参数

返回值

范例

User Contributed Notes 4 notes