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PHP odbc_binmode

PHP original manual for odbc_binmode [ show | php.net ]

odbc_binmode

(PHP 4, PHP 5, PHP 7)

odbc_binmode — Handling of binary column data

Description

bool odbc_binmode ( resource $result_id , int $mode )

Enables handling of binary column data. ODBC SQL types affected are BINARY, VARBINARY, and LONGVARBINARY.

When binary SQL data is converted to character C data, each byte (8 bits) of source data is represented as two ASCII characters. These characters are the ASCII character representation of the number in its hexadecimal form. For example, a binary 00000001 is converted to "01" and a binary 11111111 is converted to "FF".

LONGVARBINARY handling
binmode longreadlen result
ODBC_BINMODE_PASSTHRU 0 passthru
ODBC_BINMODE_RETURN 0 passthru
ODBC_BINMODE_CONVERT 0 passthru
ODBC_BINMODE_PASSTHRU 0 passthru
ODBC_BINMODE_PASSTHRU >0 passthru
ODBC_BINMODE_RETURN >0 return as is
ODBC_BINMODE_CONVERT >0 return as char

If odbc_fetch_into() is used, passthru means that an empty string is returned for these columns.

Parameters

result_id

The result identifier.

If result_id is 0, the settings apply as default for new results.

Note: Default for longreadlen is 4096 and mode defaults to ODBC_BINMODE_RETURN. Handling of binary long columns is also affected by odbc_longreadlen().

mode

Possible values for mode are:

  • ODBC_BINMODE_PASSTHRU: Passthru BINARY data
  • ODBC_BINMODE_RETURN: Return as is
  • ODBC_BINMODE_CONVERT: Convert to char and return

Return Values

Returns TRUE on success or FALSE on failure.