mysqli::set_local_infile_handler
(PHP 5, PHP 7)
mysqli :: set_local_infile_handler - mysqli_set_local_infile_handler - 为LOAD DATA LOCAL INFILE 命令设置回调函数
描述
面向对象的风格
bool mysqli::set_local_infile_handler ( mysqli $link , callable $read_func )程序风格
bool mysqli_set_local_infile_handler ( mysqli $link , callable $read_func )为 LOAD DATA LOCAL INFILE 命令设置回调函数
回调任务是从 LOAD DATA LOCAL INFILE 中指定的文件读取输入，并将其重新格式化为 LOAD DATA INFILE 理解的格式。
返回的数据需要与 LOAD DATA 中指定的格式相匹配
参数
`link` 仅过程样式：由 mysqli_connect（）或 mysqli_init（）返回的链接标识符
read_func
采用以下参数的回调函数或对象方法：
stream
与 SQL 命令 INFILE 关联的 PHP 流
&buffer
将重写的输入存储到的字符串缓冲区
buflen
要存储在缓冲区中的最大字符数
&errormsg
如果发生错误，您可以在此处存储错误消息
buffer如果发生错误，回调函数应返回存储在或为负值的字符数。
返回值
TRUE成功或FALSE失败时返回。
例子
Example #1 mysqli::set_local_infile_handler() example
面向对象的风格
<?php
??$db?=?mysqli_init();
??$db->real_connect("localhost","root","","test");
??function?callme($stream,?&$buffer,?$buflen,?&$errmsg)
??{
????$buffer?=?fgets($stream);
????echo?$buffer;
????//?convert?to?upper?case?and?replace?","?delimiter?with?[TAB]
????$buffer?=?strtoupper(str_replace(",",?"\t",?$buffer));
????return?strlen($buffer);
??}
??echo?"Input:\n";
??$db->set_local_infile_handler("callme");
??$db->query("LOAD?DATA?LOCAL?INFILE?'input.txt'?INTO?TABLE?t1");
??$db->set_local_infile_default();
??$res?=?$db->query("SELECT?*?FROM?t1");
??echo?"\nResult:\n";
??while?($row?=?$res->fetch_assoc())?{
????echo?join(",",?$row)."\n";
??}
?>程序风格
<?php
??$db?=?mysqli_init();
??mysqli_real_connect($db,?"localhost","root","","test");
??function?callme($stream,?&$buffer,?$buflen,?&$errmsg)
??{
????$buffer?=?fgets($stream);
????echo?$buffer;
????//?convert?to?upper?case?and?replace?","?delimiter?with?[TAB]
????$buffer?=?strtoupper(str_replace(",",?"\t",?$buffer));
????return?strlen($buffer);
??}
??echo?"Input:\n";
??mysqli_set_local_infile_handler($db,?"callme");
??mysqli_query($db,?"LOAD?DATA?LOCAL?INFILE?'input.txt'?INTO?TABLE?t1");
??mysqli_set_local_infile_default($db);
??$res?=?mysqli_query($db,?"SELECT?*?FROM?t1");
??echo?"\nResult:\n";
??while?($row?=?mysqli_fetch_assoc($res))?{
????echo?join(",",?$row)."\n";
??}
?>上面的例子会输出：
Input:
23,foo
42,bar
Output:
23,FOO
42,BAR本文档系腾讯云开发者社区成员共同维护，如有问题请联系 cloudcommunity@tencent.com
