PHP5中文手册·Get len bytes data from open blob -- 追寻梦想＞编程乐园＞PHP 编程

说明

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().

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.


	PHP5中文手册 ibase_blob_echo ibase_blob_import Firebird/InterBase PHP Manual ibase_blob_get (PHP 4, PHP 5) ibase_blob_get — Get len bytes data from open blob 说明 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(). 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() ibase_blob_close() ibase_blob_echo() ibase_blob_echo ibase_blob_import Firebird/InterBase PHP Manual

ibase_blob_get

说明

参数

返回值

范例

参见