Php/docs/function.pg-delete
来自菜鸟教程
pg_delete
(PHP 4 >= 4.3.0, PHP 5, PHP 7)
pg_delete — 删除记录
说明
pg_delete
( resource $connection
, string $table_name
, array $assoc_array
[, int $options
= PGSQL_DML_EXEC
] ) : mixed
pg_delete() 删除符合条件的记录,条件在 assoc_array
中以 field=>value
格式给出。如果指定了 option
,则 pg_convert() 按照该选项作用于 assoc_array
之上。
参数
connection
- PostgreSQL database connection resource.
table_name
- Name of the table from which to delete rows.
assoc_array
- An array whose keys are field names in the table
table_name
, and whose values are the values of those fields that are to be deleted. options
- Any number of
PGSQL_CONV_FORCE_NULL
,PGSQL_DML_NO_CONV
,PGSQL_DML_EXEC
orPGSQL_DML_STRING
combined. IfPGSQL_DML_STRING
is part of theoptions
then query string is returned.
返回值
成功时返回 true
, 或者在失败时返回 false
。 Returns string if PGSQL_DML_STRING
is passed
via options
.
范例
Example #1 pg_delete() 例子
<?php $db = pg_connect('dbname=foo'); // This is safe, since $_POST is converted automatically $res = pg_delete($db, 'post_log', $_POST); if ($res) { echo "POST data is deleted: $res\n"; } else { echo "User must have sent wrong inputs\n"; }?>
Warning 此函数是实验性的。此函数的表象,包括名称及其相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本函数风险自担。