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odbc_binmode
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odbc_binmode

Name

odbc_binmode — Controls handling of binary data.

Synopsis

bool odbc_binmode(conn, mode); resource conn: Connection ID int mode: Mode

Returns

Always TRUE

Description

When returning an image field or a large text field through ODBC, you can control what happens to the data when it's returned by the ODBC driver. Depending on your configuration and the configuration of the companion odbc_longreadlen() function, binary data can be passed straight through or converted to character data. The table below demonstrates actions that are taken depending on the value set with odbc_binmode() and odbc_longreadlen() . The value of odbc_binmode() can also be controlled from the PHP initialization file. This function only affects the ODBC datatypes BINARY, VARBINARY, and LONGVARBINARY.

odbc_binmode()	odbc_longreadlen()	Result
`ODBC_BINMODE_PASSTHRU`	`0`	`Pass through`
`ODBC_BINMODE_RETURN`	`0`	`Pass through`
`ODBC_BINMODE_CONVERT`	`0`	`Pass through`
`ODBC_BINMODE_PASSTHRU`	`0`	`Pass through`
`ODBC_BINMODE_PASSTHRU`	`>0`	`Pass through`
`ODBC_BINMODE_RETURN`	`>0`	`Return as is`
`ODBC_BINMODE_CONVERT`	`>0`	`Return as char`

Version

Existing since version 3.0.6

Example

Example 1323. Retrieve image from database

<?php
$db = odbc_connect("DSN","user","pass"); 
$result = odbc_exec($db, "SELECT Picture FROM Categories"); 

// change to ODBC_BINMODE_CONVERT for comparison 
odbc_binmode($result, ODBC_BINMODE_RETURN);
echo odbc_result($result,1);
?>

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