mysql_free_result(3) [php man page]

MYSQL_FREE_RESULT(3)							 1						      MYSQL_FREE_RESULT(3)

mysql_free_result - Free result memory

SYNOPSIS

       Warning

	      This  extension  is deprecated as of PHP 5.5.0, and will be removed in the future. Instead, the MySQLi or PDO_MySQL extension should
	      be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:

		     omysqli_free_result(3)

		     oAssign the value of
		       NULL to the PDO object, or PDOStatement::closeCursor

       bool mysql_free_result (resource  $result)

DESCRIPTION

       mysql_free_result(3) will free all memory associated with the result identifier $result.

       mysql_free_result(3) 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.

	      o $
		result -The result resource that is being evaluated. This result comes from a call to mysql_query(3).

	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(3) only returns
       a resource for SELECT, SHOW, EXPLAIN, and DESCRIBE queries.

       Example #1

	      A mysql_free_result(3) 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 afterwards */
	      $row = mysql_fetch_assoc($result);

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

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

       Note

	       For backward compatibility, the following deprecated alias may be used: mysql_freeresult(3)

       mysql_query(3), is_resource(3).

PHP Documentation Group 												      MYSQL_FREE_RESULT(3)

MYSQL_DB_QUERY(3)							 1							 MYSQL_DB_QUERY(3)

mysql_db_query - Selects a database and executes a query on it

SYNOPSIS

       Warning

	      This  function  was deprecated in PHP 5.3.0, and will be removed in the future, along with the entirety of the original MySQL exten-
	      sion. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide  and  related  FAQ  for  more
	      information. Alternatives to this function include:

		     omysqli_select_db(3) then the query

		     o PDO::__construct

       resource mysql_db_query (string	$database, string  $query, [resource  $link_identifier = NULL])

DESCRIPTION

       mysql_db_query(3) selects a database, and executes a query on it.

	      o $database
		- The name of the database that will be selected.

	      o $query
		- The MySQL query.  Data inside the query should be properly escaped.

	      o $
		link_identifier  -The  MySQL  connection.  If  the  link  identifier is not specified, the last link opened by mysql_connect(3) is
		assumed. If no such link is found, it will try to create one as if mysql_connect(3) was called with no arguments. If no connection
		is found or established, an E_WARNING level error is generated.

	Returns a positive MySQL result resource to the query result, or FALSE on error. The function also returns TRUE/ FALSE for INSERT/ UPDATE/
       DELETE queries to indicate success/failure.

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.3.0	|						    |
       |	|						    |
       |	|  This function now throws an E_DEPRECATED notice. |
       |	|						    |
       +--------+---------------------------------------------------+
       Example #1

	      mysql_db_query(3) alternative example

	      <?php

	      if (!$link = mysql_connect('mysql_host', 'mysql_user', 'mysql_password')) {
		  echo 'Could not connect to mysql';
		  exit;
	      }

	      if (!mysql_select_db('mysql_dbname', $link)) {
		  echo 'Could not select database';
		  exit;
	      }

	      $sql    = 'SELECT foo FROM bar WHERE id = 42';
	      $result = mysql_query($sql, $link);

	      if (!$result) {
		  echo "DB Error, could not query the database
";
		  echo 'MySQL Error: ' . mysql_error();
		  exit;
	      }

	      while ($row = mysql_fetch_assoc($result)) {
		  echo $row['foo'];
	      }

	      mysql_free_result($result);

	      ?>

       Note

	       Be aware that this function does NOT switch back to the database you were connected before. In other  words,  you  can't  use  this
	      function	to  temporarily run a sql query on another database, you would have to manually switch back. Users are strongly encouraged
	      to use the database.table syntax in their sql queries or mysql_select_db(3) instead of this function.

       mysql_query(3), mysql_select_db(3).

PHP Documentation Group 													 MYSQL_DB_QUERY(3)