(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)
pg_select — 選擇記錄
$connection,$table_name,$assoc_array,$options = PGSQL_DML_EXEC
pg_select() 根據(jù) assoc_array 數(shù)組中的 field=>value 值來(lái)選擇記錄。成功的查詢(xún)返回和 assoc_array 指定的條件相匹配的包括記錄和字段的數(shù)組。
如果指定了 options，pg_convert() 會(huì)按照指定選項(xiàng)作用于 assoc_array 之上。
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 數(shù)據(jù)庫(kù)連接資源。
table_nameName of the table from which to select rows.
assoc_array
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 retrieved.
options
Any number of PGSQL_CONV_FORCE_NULL,
PGSQL_DML_NO_CONV,
PGSQL_DML_EXEC,
PGSQL_DML_ASYNC 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_select() example
<?php
$db = pg_connect('dbname=foo');
// This is safe, since $_POST is converted automatically
$rec = pg_select($db, 'post_log', $_POST);
if ($rec) {
echo "Records selected\n";
var_dump($rec);
} else {
echo "User must have sent wrong inputs\n";
}
?>