(no version information, might be only in CVS)PDOStatement->bindParam() -- Binds a parameter to the specified variable name
Binds a PHP variable to a corresponding named or question mark placeholder in the SQL statement that was use to prepare the statement. Unlike PDOStatement->bindValue(), the variable is bound as a reference and will only be evaluated at the time that PDOStatement->execute() is called.
Most parameters are input parameters, that is, parameters that are used in a read-only fashion to build up the query. Some drivers support the invocation of stored procedures that return data as output parameters, and some also as input/output parameters that both send in data and are updated to receive it.
Parameter identifier. For a prepared statement using named
placeholders, this will be a parameter name of the form
:name. For a prepared statement using
question mark placeholders, this will be the 1-indexed position of
Name of the PHP variable to bind to the SQL statement parameter.
Explicit data type for the parameter using the PDO::PARAM_*
constants. To return an INOUT parameter from a stored procedure,
use the bitwise OR operator to set the PDO::PARAM_INPUT_OUTPUT bits
Length of the data type. To indicate that a parameter is an OUT parameter from a stored procedure, you must explicitly set the length.
Example 1. Execute a prepared statement with named placeholders
Example 2. Execute a prepared statement with question mark placeholders
Example 3. Call a stored procedure with an INOUT parameter