This is the function you need if you are running into the infamous "must be superuser to COPY to or from a file" error from postgres.
pg_put_line
(PHP 4 >= 4.0.3, PHP 5, PHP 7)
pg_put_line — Send a NULL-terminated string to PostgreSQL backend
설명
bool pg_put_line
([ resource
$connection
], string $data
)pg_put_line() sends a NULL-terminated string to the PostgreSQL backend server. This is needed in conjunction with PostgreSQL's COPY FROM command.
COPY is a high-speed data loading interface supported by PostgreSQL. Data is passed in without being parsed, and in a single transaction.
An alternative to using raw pg_put_line() commands is to use pg_copy_from(). This is a far simpler interface.
Note:
The application must explicitly send the two characters "\." on the last line to indicate to the backend that it has finished sending its data, before issuing pg_end_copy().
Warning
Use of the pg_put_line() causes most large object operations, including pg_lo_read() and pg_lo_tell(), to subsequently fail. You can use pg_copy_from() and pg_copy_to() instead.
인수
-
connection -
PostgreSQL database connection resource. When
connectionis not present, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect(). -
data -
A line of text to be sent directly to the PostgreSQL backend. A NULL terminator is added automatically.
반환값
성공 시 TRUE를, 실패 시 FALSE를 반환합니다.
예제
Example #1 pg_put_line() example
<?php
$conn = pg_pconnect("dbname=foo");
pg_query($conn, "create table bar (a int4, b char(16), d float8)");
pg_query($conn, "copy bar from stdin");
pg_put_line($conn, "3\thello world\t4.5\n");
pg_put_line($conn, "4\tgoodbye world\t7.11\n");
pg_put_line($conn, "\\.\n");
pg_end_copy($conn);
?>
add a note
User Contributed Notes 2 notes
kurt at nospam dot milliganshome dot net ¶
19 years ago
smcbride at msn dot com ¶
4 years ago
When using this function, don't get bit by using 'literal\tanotherliteral\n' issue by using single quotes vs. double quotes. "literal\tanotherliteral\n" is not the same. Many of the functions are impacted on how double quotes treats escape characters different than single quotes. I forget it all the time.
