You do NOT need to call pg_free_result() on every result resource you create.
When result resources go out of scope, they are garbage collected just like everything else.
Unless you're hoarding your results somewhere, you can basically ignore this function.
Here's a little test you can run to confirm this: http://pastebin.com/ghw1PHuE
pg_free_result
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
pg_free_result — Free result memory
설명
bool pg_free_result
( resource
$result
)pg_free_result() frees the memory and data associated with the specified PostgreSQL query result resource.
This function need only be called if memory consumption during script execution is a problem. Otherwise, all result memory will be automatically freed when the script ends.
Note:
This function used to be called pg_freeresult().
인수
-
result -
PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).
반환값
성공 시 TRUE를, 실패 시 FALSE를 반환합니다.
예제
Example #1 pg_free_result() example
<?php
$db = pg_connect("dbname=users user=me") || die();
$res = pg_query($db, "SELECT 1 UNION ALL SELECT 2");
$val = pg_fetch_result($res, 1, 0);
echo "First field in the second row is: ", $val, "\n";
pg_free_result($res);
?>
위 예제의 출력:
First field in the second row is: 2
참고
- pg_query() - Execute a query
- pg_query_params() - Submits a command to the server and waits for the result, with the ability to pass parameters separately from the SQL command text.
- pg_execute() - Sends a request to execute a prepared statement with given parameters, and waits for the result.
add a note
User Contributed Notes 1 note
Stefan W ¶
11 years ago
