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pg_free_resultFree result memory


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.


This function used to be called pg_freeresult().



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.


Example #1 pg_free_result() example

pg_connect("dbname=users user=me") || die();

$res pg_query($db"SELECT 1 UNION ALL SELECT 2");

$val pg_fetch_result($res10);

"First field in the second row is: "$val"\n";


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

Stefan W
3 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:
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