# pg_send_query_params

(PHP 5 >= 5.1.0, PHP 7)

pg_send_query_params — Submits a command and separate parameters to the server without waiting for the result(s)

### 说明

pg_send_query_params ( resource `$connection` , string `$query` , array `$params` ) : bool

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