mysql close



mysql close

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at least with php.. and windows connecting by tcp, you should always use this mysql_close() function to close and free up the tcp socket being used by php. garbage collection after script execution does not close the tcp socket on its own. the socket would otherwise re in 'wait' state for approximately seconds, 

mysql close

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definition and usage. the mysqli_close() function closes a previously opened database connection. syntax. mysqli_close(connection);. parameter, description. connection, required. specifies the mysql connection to close. technical details. return value: true on success. false on failure. php version:  

mysql close

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mysql . reference manual. preface and legal notices · general information · installing and upgrading mysql · tutorial · mysql programs · mysql server administration · security · backup and recovery · optimization · language structure · character sets, collations, unicode · data types · functions and operators.

mysql close

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so, while explicitly closing open connections and freeing result sets is optional, doing so is recommended. this will immediately return resources to php and mysql, which can improve performance. for related information, see freeing resources. parameters. link_identifier. the mysql connection. if the link identifier is not 

mysql close

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cursor close syntax. press ctrlc to copy. close cursor_name. this statement closes a previously opened cursor. for an example, see section .., “cursors”. an error occurs if the cursor is not open. if not closed explicitly, a cursor is closed at the end of the begin end block in which it was declared.

mysql close

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if your script has a lot of processing to do after it has finished using the database, closing the database link prematurely may help free up a little bit of memory and other resources (such as mysql connections) while your script continues with other things. this is very unlikely to be an issue in most scripts, 

mysql close

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mai if your script has a fair amount of processing to perform after fetching the result and has retrieved the full result set, you definitely should close the connection. if you don't, there's a chance the mysql server will reach it's connection limit when the web server is under heavy usage. if you can't close the 

mysql close

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déc. never create a new connection for every query; you don't even have to close it manually. just create the connection at the beginning of you page. have a look at: how do you efficiently connect to mysql in php without reconnecting on every query. you can use this: public function __destruct() 

mysql close

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you'd need to place that code in a function named __destruct() , much in the same way as __construct() . see php.net/manual/en/language.oop.decon.php for more information. the code would then look like: include("constants.php"); class mysqldb { var $connection; var $sf; function __construct() 

mysql close

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to close a mysql connection we can use mysql_close() function. it can takes a optional parameter as link and closes it. if no link identifier is specified then last opened connection is closed. it is not necessary to use mysql_close() function as all connections are closed at the end of the script execution. here is the function