Php/docs/function.pg-update
pg_update
(PHP 4 >= 4.3.0, PHP 5, PHP 7)
pg_update — 更新表
说明
pg_update
( resource $connection
, string $table_name
, array $data
, array $condition
[, int $options = PGSQL_DML_EXEC
] ) : mixed
pg_update() 用 condition 作为条件查询数据库，用 data 中的数据更新符合条件的记录。如果指定了 options，则 pg_convert() 会按照指定选项作用到 data 上。
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。
参数
connection- PostgreSQL database connection resource.
table_name- Name of the table into which to update rows.
data- An array whose keys are field names in the table
table_name, and whose values are what matched rows are to be updated to. condition- An array whose keys are field names in the table
table_name, and whose values are the conditions that a row must meet to be updated. options- Any number of
PGSQL_CONV_OPTS,PGSQL_DML_NO_CONV,PGSQL_DML_EXECorPGSQL_DML_STRINGcombined. IfPGSQL_DML_STRINGis part of theoptionsthen 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_update() example
<?php $db = pg_connect('dbname=foo'); $data = array('field1'=>'AA', 'field2'=>'BB'); // This is safe, since $_POST is converted automatically $res = pg_update($db, 'post_log', $_POST, $data); if ($res) { echo "Data is updated: $res\n"; } else { echo "User must have sent wrong inputs\n"; }?>
