sqlite_has_more

(PHP 5 < 5.4.0, PECL sqlite >= 1.0.0)

sqlite_has_more — Finds whether or not more rows are available

说明

sqlite_has_more ( resource $result ) : bool

Finds whether more rows are available from the given result set.

参数

result: The SQLite result resource.

返回值

Returns TRUE if there are more rows available from the result handle, or FALSE otherwise.

参见

sqlite_num_rows() - Returns the number of rows in a buffered result set
sqlite_changes() - Returns the number of rows that were changed by the most recent SQL statement

User Contributed Notes

dcchut at gmail dot com 01-Feb-2009 04:39


dragosmocrii at gmail dot com:



It is slightly more efficient to use the COUNT function. (And when I say slightly I mean whisker small slightly.)



<?php

// $db is a SQLite database connection



if (sqlite_single_query($db, 'SELECT COUNT(*) FROM records WHERE amount_owing > 500')) {

    // There are records where the amount owing exceeds $500, do some action.

} else {

    // No money for you!

}



?>

dragosmocrii at gmail dot com 06-Apr-2008 11:08


I use this function to check if an element exists in the database.



<?php

$cat=$_REQUEST['cat'];

$db=sqlite_open('./sqlite_database.db',0666,$err) or die();

$query='select * from catsub where cat=\''.$cat.'\'';

$result=sqlite_has_more(sqlite_query($db,$query));

if($result===true ) echo 'Exists'; else echo 'Doesnt Exist';

sqlite_close($db);

?>