pg_update
(PHP 4 >= 4.3.0, PHP 5, PHP 7)
pg_update — 更新表
说明
$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。
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";
}
?>
