db2_fetch_row

(PECL ibm_db2 >= 1.0.0)

db2_fetch_row — Sets the result set pointer to the next row or requested row

说明

db2_fetch_row(resource $stmt, int $row_number = ?): bool

Use db2_fetch_row() to iterate through a result set, or to point to a specific row in a result set if you requested a scrollable cursor.

To retrieve individual fields from the result set, call the db2_result() function.

Rather than calling db2_fetch_row() and db2_result(), most applications will call one of db2_fetch_assoc(), db2_fetch_both(), or db2_fetch_array() to advance the result set pointer and return a complete row as an array.

参数

stmt: A valid stmt resource.
row_number: With scrollable cursors, you can request a specific row number in the result set. Row numbering is 1-indexed.

返回值

Returns true if the requested row exists in the result set. Returns false if the requested row does not exist in the result set.

范例

示例 #1 Iterating through a result set

The following example demonstrates how to iterate through a result set with db2_fetch_row() and retrieve columns from the result set with db2_result().


<?php
$sql = 'SELECT name, breed FROM animals WHERE weight < ?';
$stmt = db2_prepare($conn, $sql);
db2_execute($stmt, array(10));
while (db2_fetch_row($stmt)) {
    $name = db2_result($stmt, 0);
    $breed = db2_result($stmt, 1);
    print "$name $breed";
}
?>

以上例程会输出：

cat Pook
gold fish Bubbles
budgerigar Gizmo
goat Rickety Ride

示例 #2 i5/OS recommended alternatives to db2_fetch_row/db2_result

On i5/OS it is recommended that you use db2_fetch_both(), db2_fetch_array(), or db2_fetch_object() over db2_fetch_row()/db2_result(). In general db2_fetch_row()/db2_result() have more issues with various column types in EBCIDIC to ASCII translation, including possible truncation in DBCS applications. You may also find the performance of db2_fetch_both(), db2_fetch_array(), and db2_fetch_object() to be superior to db2_fetch_row()/db2_result().


<?php
  $conn = db2_connect("","","");
  $sql = 'SELECT SPECIFIC_SCHEMA, SPECIFIC_NAME, ROUTINE_SCHEMA, ROUTINE_NAME, ROUTINE_TYPE, ROUTINE_CREATED, ROUTINE_BODY, IN_PARMS, OUT_PARMS, INOUT_PARMS, PARAMETER_STYLE, EXTERNAL_NAME, EXTERNAL_LANGUAGE FROM QSYS2.SYSROUTINES FETCH FIRST 2 ROWS ONLY';
  $stmt = db2_exec($conn, $sql, array('cursor' => DB2_SCROLLABLE));
  while ($row = db2_fetch_both($stmt)){
    echo "<br>db2_fetch_both {$row['SPECIFIC_NAME']} {$row['ROUTINE_CREATED']} {$row[5]}";
  }
  $stmt = db2_exec($conn, $sql, array('cursor' => DB2_SCROLLABLE));
  while ($row = db2_fetch_array($stmt)){
    echo "<br>db2_fetch_array {$row[1]}  {$row[5]}";
  }
  $stmt = db2_exec($conn, $sql, array('cursor' => DB2_SCROLLABLE));
  while ($row = db2_fetch_object($stmt)){
    echo "<br>db2_fetch_object {$row->SPECIFIC_NAME} {$row->ROUTINE_CREATED}";
  }
  db2_close($conn);
?>

以上例程会输出：

db2_fetch_both MATCH_ANIMAL 2006-08-25-17.10.23.775000 2006-08-25-17.10.23.775000
db2_fetch_both MULTIRESULTS 2006-10-17-10.11.05.308000 2006-10-17-10.11.05.308000
db2_fetch_array MATCH_ANIMAL 2006-08-25-17.10.23.775000
db2_fetch_array MULTIRESULTS 2006-10-17-10.11.05.308000
db2_fetch_object MATCH_ANIMAL 2006-08-25-17.10.23.775000
db2_fetch_object MULTIRESULTS 2006-10-17-10.11.05.308000

参见

db2_fetch_array() - Returns an array, indexed by column position, representing a row in a result set
db2_fetch_assoc() - Returns an array, indexed by column name, representing a row in a result set
db2_fetch_both() - Returns an array, indexed by both column name and position, representing a row in a result set
db2_fetch_object() - Returns an object with properties representing columns in the fetched row
db2_result() - Returns a single column from a row in the result set

add a note

User Contributed Notes 2 notes

down

krisdover at hotmail dot com ¶

15 years ago


if the second parameter (the row number) is specified, your connection needs to have the CURSOR option set to DB2_SCROLLABLE. Otherwise all calls to this function will fail. Internal to the ibm_db2 extension module the db2cli api function SQLFetchScroll() generates the error "CLI0145E  Fetch type out of range" since it requires a scrollable resultset to work, instead of the default forward only resultset.

hope this saves someone the time it took me to track this down in the db2cli traces.

Regards,
Kris Dover

down

andrey at php dot net ¶

16 years ago


If the second parameter is 0 or NULL (which eventually evaluates to 0) then the internal pointer is moved forward. < 0 value will return an warning.

add a note

官方地址：https://www.php.net/manual/en/function.db2-fetch-row.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 网络数据库 JAVA 面试 NoSQL 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 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 PHP 8.1 ADORecordSet对象 adodb手册 opcache预加载 Composer的Packagist资源 array_multisort() 多字段排序 PHPMailer设置utf8 PHPMailer字符集CharSet mysql面试题 PHP json解析（json_decode）页面工具 [原创]诡异的php-fpm超时问题 php中几种注释规范支持php7的性能采集扩展纯php实现DES以及TripleDES加密算法 php 修改图片大小 PHP mkdir()写出来的权限与mode值不符合

略微加速

PHP官方手册 - 互联网笔记

db2_fetch_row

说明

参数

返回值

范例

参见

User Contributed Notes 2 notes