(PECL CUBRID >= 8.4.1)
cubrid_lob2_read — 從 BLOB/CLOB 資料讀取
cubrid_lob2_read() 函式從 LOB 資料中讀取 len 個位元組，並返回已讀取的位元組。
範例 #1 cubrid_lob2_read() 範例 1
<?php
// test_lob (id INT, contents CLOB)
$conn = cubrid_connect("localhost", 33000, "demodb", "public", "");
$req = cubrid_execute($conn, "select * from test_lob");
$row = cubrid_fetch_row($req, CUBRID_LOB);
print "目前位置： " . cubrid_lob2_tell($row[1]) . "\n";
cubrid_lob2_seek($row[1], 10, CUBRID_CURSOR_FIRST);
print "\n向前移動後的位置： " . cubrid_lob2_tell($row[1]) . "\n";
$data = cubrid_lob2_read($row[1], 12);
print "\n讀取後的位置： " . cubrid_lob2_tell($row[1]) . "\n";
print $data . "\n";
cubrid_lob2_seek($row[1], 5, CUBRID_CURSOR_CURRENT);
print "\n再次移動後的位置： " . cubrid_lob2_tell($row[1]) . "\n";
$data = cubrid_lob2_read($row[1], 20);
print $data . "\n";
cubrid_disconnect($conn);
?>範例 #2 cubrid_lob2_read() 範例 2
<?php
// test_lob (id INT, contents CLOB)
$conn = cubrid_connect("localhost", 33000, "demodb", "dba", "");
$req = cubrid_execute($conn, "select * from test_lob");
$row = cubrid_fetch_row($req, CUBRID_LOB);
while (true) {
if ($data = cubrid_lob2_read($row[1], 1024)) {
print $data . "\n";
}
elseif ($data === false) {
print "沒有更多資料\n";
break;
}
else {
print "一定發生了一些錯誤\n";
break;
}
}
cubrid_disconnect($conn);
?>