ibase_blob_get

(PHP 5, PHP 7 < 7.4.0)

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().

注意:
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.

示例

示例 #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

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ibase_blob_get

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