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);
?>