Description:
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PDO::pgsqlCopyFromFile() and PDO::pgsqlCopyFromArray() currently do not allow to specify format and default to TEXT.
As of PostgreSQL 8.0, allowed formats as per documentation are TEXT, CSV or BINARY - see https://www.postgresql.org/docs/current/static/sql-copy.html. Following query is not possible to perform using PDO:

COPY temp_csv FROM STDIN DELIMITER ',' CSV;

Only possible workaround includes usage of non-PDO functions as described in example here - http://php.net/manual/en/function.pg-end-copy.php



Test script:
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$conn = new PDO("pgsql:dbname=csv_db", "csv_user", "csv_pass");
$conn->pgsqlCopyFromFile("csv_table', "data.csv", ",", "\\\\N", null/*, "csv" - parameter does not exist yet*/);

Expected result:
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PDO PgSQL driver executes a query using CSV format.

Actual result:
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PDO PgSQL driver executes a query using default TEXT format, resulting in error.
PDOException: SQLSTATE[22P04]: Bad copy file format: 7 ERROR: literal newline found in data HINT: Use "\n" to represent newline.