PHP8 cubrid_drop
2024-03-27 10:22 更新
（PECL CUBRID >= 8.3.0）
cubrid_drop — 使用 OID 删除实例
说明
cubrid_drop(resource $conn_identifier, string $oid): boolcubrid_drop（） 函数用于删除 实例从数据库中使用实例。oid
参数
conn_identifier连接标识符。
oid要删除的实例的 Oid。
返回值 ¶
成功时返回 true， 或者在失败时返回 false。
示例
示例 #1 cubrid_drop（） example
<?php
$conn = cubrid_connect("localhost", 33000, "demodb");
@cubrid_execute($conn, "DROP TABLE foo");
cubrid_execute($conn, "CREATE TABLE foo(a int AUTO_INCREMENT, b set(int), c list(int), d char(10))");
cubrid_execute($conn, "INSERT INTO foo(a, b, c, d) VALUES(1, {1,2,3}, {11,22,33,333}, 'a')");
cubrid_execute($conn, "INSERT INTO foo(a, b, c, d) VALUES(2, {4,5,7}, {44,55,66,666}, 'b')");
$req = cubrid_execute($conn, "SELECT * FROM foo", CUBRID_INCLUDE_OID);
cubrid_move_cursor($req, 1, CUBRID_CURSOR_FIRST);
$oid = cubrid_current_oid($req);
printf("--- Before Drop: ---\n");
$attr = cubrid_get($conn, $oid);
var_dump($attr);
if (cubrid_drop($conn, $oid)) {
cubrid_commit($conn);
} else {
cubrid_rollback($conn);
}
cubrid_close_request($req);
$req = cubrid_execute($conn, "SELECT * FROM foo", CUBRID_INCLUDE_OID);
cubrid_move_cursor($req, 1, CUBRID_CURSOR_FIRST);
$oid = cubrid_current_oid($req);
printf("\n--- After Drop: ---\n");
$attr = cubrid_get($conn, $oid);
var_dump($attr);
cubrid_close_request($req);
cubrid_disconnect($conn);
?>以上示例会输出：
--- Before Drop: ---
array(4) {
["a"]=>
string(1) "1"
["b"]=>
array(3) {
[0]=>
string(1) "1"
[1]=>
string(1) "2"
[2]=>
string(1) "3"
}
["c"]=>
array(4) {
[0]=>
string(2) "11"
[1]=>
string(2) "22"
[2]=>
string(2) "33"
[3]=>
string(3) "333"
}
["d"]=>
string(10) "a "
}
--- After Drop: ---
array(4) {
["a"]=>
string(1) "2"
["b"]=>
array(3) {
[0]=>
string(1) "4"
[1]=>
string(1) "5"
[2]=>
string(1) "7"
}
["c"]=>
array(4) {
[0]=>
string(2) "44"
[1]=>
string(2) "55"
[2]=>
string(2) "66"
[3]=>
string(3) "666"
}
["d"]=>
string(10) "b "
}参见
- cubrid_is_instance（） - 检查OID指向的实例是否存在
以上内容是否对您有帮助：
更多建议：