MySQLi
php 手册 | 脚本学堂 | 脚本编程 | 网站编程 | 系统管理 | 服务器配置 | 数据库管理 | Php教程 | python教程 | 正则表达式 | 批处理脚本 | Centos教程 | Linux基础教程

mysqli::set_local_infile_handler

mysqli_set_local_infile_handler

(PHP 5)

mysqli::set_local_infile_handler -- mysqli_set_local_infile_handlerSet callback function for LOAD DATA LOCAL INFILE command

说明

bool mysqli_set_local_infile_handler ( mysqli $link , callback $read_func )

Object oriented style (method)

bool set_local_infile_handler ( mysqli $link , callback $read_func )

Set callback function for LOAD DATA LOCAL INFILE command

The callbacks task is to read input from the file specified in the LOAD DATA LOCAL INFILE and to reformat it into the format understood by LOAD DATA INFILE.

The returned data needs to match the format specified in the LOAD DATA

参数

link

Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()

read_func

A callback function or object method taking the following parameters:

stream

A PHP stream associated with the SQL commands INFILE

&buffer

A string buffer to store the rewritten input into

buflen

The maximum number of characters to be stored in the buffer

&errormsg

If an error occurs you can store an error message in here

The callback function should return the number of characters stored in the buffer or a negative value if an error occurred.

返回值

如果成功则返回 TRUE,失败则返回 FALSE

范例

Example #1 Object oriented style

<?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";
  }
?>

Example #2 Procedural style

<?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";
  }
?>

上例将输出:

Input:
23,foo
42,bar

Output:
23,FOO
42,BAR

参见


MySQLi
php 手册 | 脚本学堂 | 脚本编程 | 网站编程 | 系统管理 | 服务器配置 | 数据库管理 | Php教程 | python教程 | 正则表达式 | 批处理脚本 | Centos教程 | Linux基础教程