pg_update
(PHP 4 >= 4.3.0, PHP 5)
pg_update — 更新表
说明
mixed <strong>pg_update</strong>
( resource <code>$connection</code>
, string <code>$table_name</code>
, array <code>$data</code>
, array <code>$condition</code>[, int $options = PGSQL_DML_EXEC
] )
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。
<strong>Warning</strong><p>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_EXEC or
PGSQL_DML_STRING combined. If PGSQL_DML_STRING is part of the
options 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_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: $resn";
} else {
echo "User must have sent wrong inputsn";
}
?>
参见
pg_convert() - 将关联的数组值转换为适合 SQL 语句的格式。