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If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.

PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.

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mysql_free_result

(PHP 3, PHP 4, PHP 5)

mysql_free_result -- Free result memory

Description

bool mysql_free_result ( resource result )

mysql_free_result() will free all memory associated with the result identifier result.

mysql_free_result() only needs to be called if you are concerned about how much memory is being used for queries that return large result sets. All associated result memory is automatically freed at the end of the script's execution.

Parameters

result

The result resource that is being evaluated. This result comes from a call to mysql_query().

Return Values

Returns TRUE on success or FALSE on failure.

If a non-resource is used for the result, an error of level E_WARNING will be emitted. It's worth noting that mysql_query() only returns a resource for SELECT, SHOW, EXPLAIN, and DESCRIBE queries.

Examples

Example 1. A mysql_free_result() example

<?php
$result = mysql_query("SELECT id,email FROM people WHERE id = '42'");
if (!$result) {
    echo 'Could not run query: ' . mysql_error();
    exit;
}
/* Use the result, assuming we're done with it afterwords */
$row = mysql_fetch_assoc($result);

/* Now we free up the result and continue on with our script */
mysql_free_result($result);

echo $row['id'];
echo $row['email'];
?>

Notes

Note: For downward compatibility, the following deprecated alias may be used: mysql_freeresult()

See Also

mysql_query()
is_resource()

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ref.pdo-mysql | ref.pdo-mysql.connection | ref.mysqli | ref.mysql | function.mysqli-warning-count | function.mysqli-use-result | function.mysqli-thread-safe | function.mysqli-thread-id | function.mysqli-store-result | function.mysqli-stmt-store-result | function.mysqli-stmt-sqlstate | function.mysqli-stmt-send-long-data | function.mysqli-stmt-result-metadata | function.mysqli-stmt-reset | function.mysqli-stmt-prepare | function.mysqli-stmt-param-count | function.mysqli-stmt-num-rows | function.mysqli-stmt-insert-id | function.mysqli-stmt-init | function.mysqli-stmt-get-warnings | function.mysqli-stmt-free-result | function.mysqli-stmt-field-count | function.mysqli-stmt-fetch | function.mysqli-stmt-execute | function.mysqli-stmt-error | function.mysqli-stmt-errno | function.mysqli-stmt-data-seek | function.mysqli-stmt-close | function.mysqli-stmt-bind-result | function.mysqli-stmt-bind-param | function.mysqli-stmt-attr-set | function.mysqli-stmt-attr-get | function.mysqli-stmt-affected-rows | function.mysqli-stat | function.mysqli-ssl-set | function.mysqli-sqlstate | function.mysqli-slave-query | function.mysqli-set-opt | function.mysqli-set-local-infile-handler | function.mysqli-set-local-infile-default | function.mysqli-set-charset | function.mysqli-server-init | function.mysqli-server-end | function.mysqli-send-query | function.mysqli-send-long-data | function.mysqli-select-db | function.mysqli-rpl-query-type | function.mysqli-rpl-probe | function.mysqli-rpl-parse-enabled | function.mysqli-rollback | function.mysqli-report | function.mysqli-real-query | function.mysqli-real-escape-string | function.mysqli-real-connect | function.mysqli-query | function.mysqli-prepare | function.mysqli-ping | function.mysqli-param-count | function.mysqli-options | function.mysqli-num-rows | function.mysqli-num-fields | function.mysqli-next-result | function.mysqli-multi-query | function.mysqli-more-results | function.mysqli-master-query | function.mysqli-kill | function.mysqli-insert-id | function.mysqli-init | function.mysqli-info | function.mysqli-get-warnings | function.mysqli-get-server-version | function.mysqli-get-server-info | function.mysqli-get-proto-info | function.mysqli-get-metadata | function.mysqli-get-host-info | function.mysqli-get-client-version | function.mysqli-get-client-info | function.mysqli-get-charset | function.mysqli-free-result | function.mysqli-field-tell | function.mysqli-field-seek | function.mysqli-field-count | function.mysqli-fetch | function.mysqli-fetch-row | function.mysqli-fetch-object | function.mysqli-fetch-lengths | function.mysqli-fetch-fields | function.mysqli-fetch-field | function.mysqli-fetch-field-direct | function.mysqli-fetch-assoc | function.mysqli-fetch-array | function.mysqli-execute | function.mysqli-escape-string | function.mysqli-error | function.mysqli-errno | function.mysqli-enable-rpl-parse | function.mysqli-enable-reads-from-master | function.mysqli-embedded-server-start | function.mysqli-embedded-server-end | function.mysqli-dump-debug-info | function.mysqli-disable-rpl-parse | function.mysqli-disable-reads-from-master | function.mysqli-debug | function.mysqli-data-seek | function.mysqli-connect | function.mysqli-connect-error | function.mysqli-connect-errno | function.mysqli-commit | function.mysqli-close | function.mysqli-client-encoding | function.mysqli-character-set-name | function.mysqli-change-user | function.mysqli-bind-result | function.mysqli-bind-param | function.mysqli-autocommit | function.mysqli-affected-rows | function.mysql-unbuffered-query | function.mysql-thread-id | function.mysql-tablename | function.mysql-stat | function.mysql-select-db | function.mysql-result | function.mysql-real-escape-string | function.mysql-query | function.mysql-ping | function.mysql-pconnect | function.mysql-num-rows | function.mysql-num-fields | function.mysql-list-tables | function.mysql-list-processes | function.mysql-list-fields | function.mysql-list-dbs | function.mysql-insert-id | function.mysql-info | function.mysql-get-server-info | function.mysql-get-proto-info | function.mysql-get-host-info | function.mysql-get-client-info | function.mysql-free-result | function.mysql-field-type | function.mysql-field-table | function.mysql-field-seek | function.mysql-field-name | function.mysql-field-len | function.mysql-field-flags | function.mysql-fetch-row | function.mysql-fetch-object | function.mysql-fetch-lengths | function.mysql-fetch-field | function.mysql-fetch-assoc | function.mysql-fetch-array | function.mysql-escape-string | function.mysql-error | function.mysql-errno | function.mysql-drop-db | function.mysql-db-query | function.mysql-db-name | function.mysql-data-seek | function.mysql-create-db | function.mysql-connect | function.mysql-close | function.mysql-client-encoding | function.mysql-change-user | function.mysql-affected-rows |


PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.