(PHP 4 >= 4.0.3, PHP 5, PHP 7, PHP 8)
pg_put_line — 向 PostgreSQL 后端發(fā)送以 NULL 結(jié)尾的字符串
$connection = ?, string $data): bool
pg_put_line() 向 PostgreSQL 后端服務(wù)器發(fā)送以 NULL 結(jié)尾的字符串。例如可以通過 PostgreSQL 的 COPY 操作來向表中高速插入數(shù)據(jù)。結(jié)尾的 NULL 字符會(huì)自動(dòng)加入。
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.
注意:
應(yīng)用程序必須明確地在 pg_end_copy() 之前最后一行發(fā)送兩個(gè)字符 "\." 來向后端指明發(fā)送數(shù)據(jù)結(jié)束。
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.
connection
PostgreSQL database connection resource. When
connection is 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.
成功時(shí)返回 true， 或者在失敗時(shí)返回 false。
示例 #1 pg_put_line() 例子
<?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);
?>