fbsql_read_blob
(PHP 4 >= 4.2.0, PHP 5)
fbsql_read_blob -- データベースからBLOBを読み込む
説明
string
fbsql_read_blob ( string blob_handle [, resource link_identifier] )
返り値: blob_handleで指定したBLOBを含む文字列。
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.
例 1. fbsql_read_blob()の例
<?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); ?>
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fbsql_create_blob(),
fbsql_read_blob(),
fbsql_read_clob(),
fbsql_set_lob_mode()も参照ください。