odbc_binmode(3) [php man page]

ODBC_BINMODE(3) 							 1							   ODBC_BINMODE(3)

odbc_binmode - Handling of binary column data

SYNOPSIS

       bool odbc_binmode (resource  $result_id, int  $mode)

DESCRIPTION

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

PARAMETERS

	      o $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(3).

	      o $mode
		- Possible values for $mode are:

		     o ODBC_BINMODE_PASSTHRU: Passthru BINARY data

		     o ODBC_BINMODE_RETURN: Return as is

		     o ODBC_BINMODE_CONVERT: Convert to char and return

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

PHP Documentation Group 													   ODBC_BINMODE(3)

Check Out this Related Man Page

PASSTHRU(3)								 1							       PASSTHRU(3)

passthru - Execute an external program and display raw output

SYNOPSIS

       void passthru (string  $command, [int  &$return_var])

DESCRIPTION

	The  passthru(3)  function  is	similar  to  the exec(3) function in that it executes a $command. This function should be used in place of
       exec(3) or system(3) when the output from the Unix command is binary data which needs to be passed directly back to the browser.  A  common
       use  for  this  is to execute something like the pbmplus utilities that can output an image stream directly. By setting the Content-type to
       image/gif and then calling a pbmplus program to output a gif, you can create PHP scripts that output images directly.

PARAMETERS

	      o $command
		- The command that will be executed.

	      o $return_var
		- If the $return_var argument is present, the return status of the Unix command will be placed here.

RETURN VALUES

	No value is returned.

NOTES

       Warning

	      When allowing user-supplied data to be passed to this function, use escapeshellarg(3) or escapeshellcmd(3) to ensure that users can-
	      not trick the system into executing arbitrary commands.

       Note

	      If a program is started with this function, in order for it to continue running in the background, the output of the program must be
	      redirected to a file or another output stream. Failing to do so will cause PHP to hang until the execution of the program ends.

       Note

	      When safe mode is enabled, you can only execute files within the safe_mode_exec_dir. For practical  reasons,  it	is  currently  not
	      allowed to have .. components in the path to the executable.

       Warning

	      With safe mode enabled, the command string is escaped with escapeshellcmd(3). Thus, echo y | echo x becomes echo y | echo x.

SEE ALSO

       exec(3), system(3), popen(3), escapeshellcmd(3), backtick operator.

PHP Documentation Group 													       PASSTHRU(3)

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odbc_binmode(3) [php man page]

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