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

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User Contributed Notes 2 notes

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-1

dragosmocrii at gmail dot com ¶

11 years ago


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);
?>

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-2

dcchut at gmail dot com ¶

10 years ago


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!
}

?>

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官方地址：https://www.php.net/manual/en/function.sqlite-has-more.php

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sqlite_has_more

说明

参数

返回值

参见

User Contributed Notes 2 notes