SQLite3::openBlob

(PHP 5 >= 5.3.0, PHP 7)

SQLite3::openBlob — Opens a stream resource to read a BLOB

说明

public resource SQLite3::open ( string $table , string $column , int $rowid [, string $dbname = "main" ] )

Opens a stream resource to read a BLOB, which would be selected by:

SELECT column FROM dbname.table WHERE rowid = rowid

参数

table: The table name.
column: The column name.
rowid: The row ID.
dbname: The symbolic name of the DB

返回值

Returns a stream resource, 或者在失败时返回 FALSE.

范例

Example #1 SQLite3::openBlob() example


<?php
$conn = new SQLite3(':memory:');
$conn->exec('CREATE TABLE test (text text)');
$conn->exec("INSERT INTO test VALUES ('Lorem ipsum')");
$stream = $conn->openBlob('test', 'text', 1);
echo stream_get_contents($stream);
fclose($stream); // mandatory, otherwise the next line would fail
$conn->close();
?>

以上例程会输出：

Lorem ipsum