# ibase_blob_get

(PHP 5, PHP 7)

ibase_blob_get — Get len bytes data from open blob

### 说明

ibase_blob_get ( resource `$blob_handle` , int `$len` ) : string

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

> Note:

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

### 参数

`blob_handle`

  A BLOB handle opened with ibase_blob_open().

`len`

  Size of returned data.

### 返回值

Returns at most `len` bytes from the BLOB, or `FALSE` on failure.

### 范例

Example #1 ibase_blob_get() example

    <?php
    $result    = ibase_query("SELECT blob_value FROM table");
    $data      = ibase_fetch_object($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.

### 参见

- ibase_blob_open() - Open blob for retrieving data parts
- ibase_blob_close() - Close blob
- ibase_blob_echo() - Output blob contents to browser