如何使用 IN () 参数执行 PostgreSQL PREPARE 查询

How to execute a PostgreSQL PREPARE query with IN () parameters

我正在尝试准备来自 PHP 的查询,例如:

pg_prepare($con, "prep", "select * from test where tid in ()");

然后执行:

$strpar = "3,4,6,8,10";
pg_execute($con, "prep", array($strpars));

问题是我无法传递一系列构建的值,因为 prepare 需要固定数量的参数。有没有办法让参数动态化?

使用数组表示一系列值:

pg_prepare($con, "prep", "select * from test where tid=ANY()");

$strpar = "{3,4,6,8,10}";
pg_execute($con, "prep", array($strpars));

您还可以创建一个 PHP 函数来接收 PHP 数组并将其设置为 Postgres 准备语句的有效数组,如:

function php_array_to_pg ($array) {

    $values = "";

    foreach ($array as $value) {
        if ($values=="") {
        $values = $value;
        } else {
        $values = $values.",".$value;
        }
    }

    return "{".$values."}";
}

然后你声明如下:

pg_prepare($con, "prep", "select * from test where tid=ANY()");

$array = array(1,2,3,4);

pg_execute($con, "prep", array(php_array_to_pg ($array)));