(PHP 4 >= 4.3.0, PHP 5)
pg_delete — 删除记录
$connection
, string $table_name
, array $assoc_array
[, int $options = PGSQL_DML_EXEC
] )pg_delete() 删除符合条件的记录，条件在 assoc_array 中以 field=>value 格式给出。如果指定了 option，则 pg_convert() 按照该选项作用于 assoc_array 之上。
connection
PostgreSQL database connection resource.
table_name
Name of the table from which to delete rows.
assoc_array
An array whose keys are field names in the table table_name,
and whose values are the values of those fields that are to be deleted.
options
Any number of PGSQL_CONV_FORCE_NULL,
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.
成功时返回 TRUE， 或者在失败时返回 FALSE。 Returns string if PGSQL_DML_STRING is passed
via options.
Example #1 pg_delete() 例子
<?php
$db = pg_connect('dbname=foo');
// This is safe, since $_POST is converted automatically
$res = pg_delete($db, 'post_log', $_POST);
if ($res) {
echo "POST data is deleted: $res\n";
} else {
echo "User must have sent wrong inputs\n";
}
?>
此函数是实验性的。此函数的表象，包括名称及其相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本函数风险自担 。
(2004-04-27 03:47:01)
One should take care when checking the return value.
0 == false which is not equal with failed delete.
if(!$res)
echo "Nothing was deleted";