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# fbsql_read_blob

(PHP 4 >= 4.2.0)

fbsql_read_blob -- Read a BLOB from the database

## Description

string fbsql_read_blob ( string blob_handle [, resource link_identifier])

Returns: A string containing the BLOB specified by blob_handle.

fbsql_read_blob() reads BLOB data from the database. If a select statement contains BLOB and/or BLOB columns FrontBase will return the data directly when data is fetched. This default behavior can be changed with fbsql_set_lob_mode() so the fetch functions will return handles to BLOB and CLOB data. If a handle is fetched a user must call fbsql_read_blob() to get the actual BLOB data from the database.

Example 1. fbsql_read_blob() example
    <?php
        $link = fbsql_pconnect ("localhost", "_SYSTEM", "secret")
            or die ("Could not connect");
        $sql = "SELECT BLOB_COLUMN FROM BLOB_TABLE;";
        $rs = fbsql_query($sql, $link);
        $row_data = fbsql_fetch_row($rs);
        // $row_data[0] will now contain the blob data for teh first row
        fbsql_free_result($rs);

        $rs = fbsql_query($sql, $link);
        fbsql_set_lob_mode($rs, FBSQL_LOB_HANDLE);
        $row_data = fbsql_fetch_row($rs);
        // $row_data[0] will now contain a handle to the BLOB data in the first row
        $blob_data = fbsql_read_blob($row_data[0]);
        fbsql_free_result($rs);

    ?>

See also: fbsql_create_blob(), fbsql_read_blob(), fbsql_read_clob(), and fbsql_set_lob_mode().

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