pg_free_result

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

pg_free_result — Free result memory

Descrierea

pg_free_result ( resource $result ) : bool

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.

Notă:
This function used to be called pg_freeresult().

Parametri

result: PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).

Valorile întoarse

Întoarce valoarea true în cazul succesului sau false în cazul eșecului.

Exemple

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);
?>

Exemplul de mai sus va afișa:

First field in the second row is: 2

A se vedea și

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

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User Contributed Notes 1 note

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Stefan W ¶

11 years ago


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

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