高效Web开发的10个jQuery代码片段
411
2024-02-24
(PHP 5 >= 5.1.0)
pg_send_query_params — Submits a command and separate parameters to the server without waiting for the result(s).
说明
bool pg_send_query_params ( resource$connection
, string $query
, array $params
)
Submits a command and separate parameters to the server without waiting for the result(s).
This is equivalent to pg_send_query() except that query
parameters can be specified separately from the
query string. The function's parameters are
handled identically to pg_query_params(). Like
pg_query_params(), it will not work on pre-7.4 PostgreSQL
connections, and it allows only one command in the query string.
参数
connection
PostgreSQL database connection resource.
query
The parameterized SQL statement. Must contain only a single statement. (multiple statements separated by semi-colons are not allowed.) If any parameters are used, they are referred to as $1, $2, etc.
params
An array of parameter values to substitute for the $1, $2, etc. placeholders in the original prepared query string. The number of elements in the array must match the number of placeholders.
返回值
成功时返回 TRUE， 或者在失败时返回 FALSE。
Use pg_get_result() to determine the query result.
范例
Example #1 Using pg_send_query_params()
<?php
$dbconn = pg_connect("dbname=publisher") or die("Could not connect");
// Using parameters. Note that it is not necessary to quote or escape
// the parameter.
pg_send_query_params($dbconn, 'select count(*) from authors where city = $1', array('Perth'));
// Compare against basic pg_send_query usage
$str = pg_escape_string('Perth');
pg_send_query($dbconn, "select count(*) from authors where city = '${str}'");
?>
参见
pg_send_query() - 发送异步查询
