PHP PDO bindParam/bindValue Multiple times [duplicate]

问题

I'm having an issue with the PDO statements for ODBC.

I'm using SQL SERVER 7 in Windows Server 2003 and PHP 5.4.x

For eg:

I have the query:

(this is not the actual query but it serves right for the example)

$query = SELECT * FROM table WHERE number = :number OR number = :number

in my php i have:

$conn = new PDO($connectionString);

$conn->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

$statement = $conn->prepare($query);

$statement->bindParam(':number', $someNumber);

$statement->execute();

This throws error

COUNT field incorrect or syntax error

The thing is, bindParam is only binding the FIRST occurrence of :number ... AND trying to bind it again doesn't work either.

Is there a way to bind multiple named params with the same name?

I'm trying not to use positional params using the ? instead

回答1:

Theoretical you could turn on emulation of prepared statements.

You must include a unique parameter marker for each value you wish to pass in to the statement when you call PDOStatement::execute(). You cannot use a named parameter marker of the same name more than once in a prepared statement, unless emulation mode is on.

http://www.php.net/manual/en/pdo.prepare.php

回答2:

I don't know too much about MsSQL to be honest, but I am quite sure there is some equivalent to User Defined Variables in MySQL. You could use those instead of parameters like I described in this answer:

https://stackoverflow.com/a/31068865/3391783

回答3:

Just turn emulation on, changing this setting from false to true:

$conn->setAttribute(PDO::ATTR_EMULATE_PREPARES, true);

来源：https://stackoverflow.com/questions/24482586/php-pdo-bindparam-bindvalue-multiple-times

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php

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sqlbindparameter