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ibase_blob_get

(PHP 3 >= 3.0.7, PHP 4, PHP 5)

ibase_blob_get --  Get len bytes data from open blob

Description

string ibase_blob_get ( resource blob_handle, int len )

This function returns at most len bytes from a BLOB that has been opened for reading by ibase_blob_open() . Returns FALSE on failure.

<?php
    $sql        = "SELECT blob_value FROM table" ;
     $result     = ibase_query ( $sql );
     $data       = ibase_fetch_object ( $result );
     $blob_data = ibase_blob_info ( $data -> BLOB_VALUE );
     $blob_hndl = ibase_blob_open ( $data -> BLOB_VALUE );
    echo          ibase_blob_get ( $blob_hndl , $blob_data [ 0 ]);
?>

Whilst this example doesn't do much more than a 'ibase_blob_echo($data->BLOB_VALUE)' would do, it does show you how to get information into a $variable to manipulate as you please.

注: It is not possible to read from a BLOB that has been opened for writing by ibase_blob_create() .

See also ibase_blob_open() , ibase_blob_close() and ibase_blob_echo() .

后退 起点 前进
ibase_blob_echo 上一级 ibase_blob_import