PHP:pg_send_query_params()的用法_PostgreSQL函数

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pg_send_query_params

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(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$dbconn=pg_connect("dbname=publisher")ordie("Couldnotconnect");//Usingparameters.Notethatitisnotnecessarytoquoteorescape//theparameter.pg_send_query_params($dbconn,'selectcount(*)fromauthorswherecity=$1',array('Perth'));//Compareagainstbasicpg_send_queryusage$str=pg_escape_string('Perth');pg_send_query($dbconn,"selectcount(*)fromauthorswherecity='${str}'");?>

参见

pg_send_query() - 发送异步查询

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