(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)
pg_update — 更新表
$connection,$table_name,$data,$condition,$options = PGSQL_DML_EXEC
pg_update() 用 condition 作為條件查詢數(shù)據(jù)庫(kù)，用 data 中的數(shù)據(jù)更新符合條件的記錄。如果指定了 options，則 pg_convert() 會(huì)按照指定選項(xiàng)作用到 data 上。
此函數(shù)是實(shí)驗(yàn)性的。此函數(shù)的表象，包括名稱(chēng)及其相關(guān)文檔都可能在未來(lái)的 PHP 發(fā)布版本中未通知就被修改。使用本函數(shù)風(fēng)險(xiǎn)自擔(dān)。
connectionPostgreSQL database connection resource.
table_nameName 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.
成功時(shí)返回 true， 或者在失敗時(shí)返回 false。 Returns string if PGSQL_DML_STRING is passed
via options.
示例 #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";
}
?>