Set callback function for LOAD DATA LOCAL INFILE command

mysqli::set_local_infile_default
mysqli->sqlstate
MySQLi
PHP Manual

# mysqli::set_local_infile_handler

# mysqli_set_local_infile_handler

(PHP 5)

mysqli::set_local_infile_handler -- mysqli_set_local_infile_handler — Set callback function for LOAD DATA LOCAL INFILE command

### Description

Object oriented style

bool mysqli::set_local_infile_handler ( mysqli `$link` , callback `$read_func` )

Procedural style

bool mysqli_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

### Parameters

`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.

### Return Values

Returns `TRUE` on success or `FALSE` on failure.

### Examples

Example #1 mysqli::set_local_infile_handler example

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";
}
?>`

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";
}
?>`

The above examples will output:

    Input:
    23,foo
    42,bar

    Output:
    23,FOO
    42,BAR

### See Also

- mysqli_set_local_infile_default() - Unsets user defined handler for load local infile command

mysqli::set_local_infile_default
mysqli->sqlstate
MySQLi
PHP Manual