sqlite_array_query
SQLiteDatabase::arrayQuery
(PHP 5 < 5.4.0, PECL sqlite >= 1.0.0)
sqlite_array_query -- SQLiteDatabase::arrayQuery — Execute a query against a given database and returns an array
Description
$dbhandle
, string $query
[, int $result_type = SQLITE_BOTH
[, bool $decode_binary = true
]] )$query
, resource $dbhandle
[, int $result_type = SQLITE_BOTH
[, bool $decode_binary = true
]] )Object oriented style (method):
$query
[, int $result_type = SQLITE_BOTH
[, bool $decode_binary = true
]] )sqlite_array_query() executes the given query and returns an array of the entire result set. It is similar to calling sqlite_query() and then sqlite_fetch_array() for each row in the result set. sqlite_array_query() is significantly faster than the aforementioned.
sqlite_array_query() is best suited to queries returning 45 rows or less. If you have more data than that, it is recommended that you write your scripts to use sqlite_unbuffered_query() instead for more optimal performance.
Parameters
-
query -
The query to be executed.
Data inside the query should be properly escaped.
-
dbhandle -
The SQLite Database resource; returned from sqlite_open() when used procedurally. This parameter is not required when using the object-oriented method.
-
result_type -
The optional
result_typeparameter accepts a constant and determines how the returned array will be indexed. UsingSQLITE_ASSOCwill return only associative indices (named fields) whileSQLITE_NUMwill return only numerical indices (ordinal field numbers).SQLITE_BOTHwill return both associative and numerical indices.SQLITE_BOTHis the default for this function. -
decode_binary -
When the
decode_binaryparameter is set toTRUE(the default), PHP will decode the binary encoding it applied to the data if it was encoded using the sqlite_escape_string(). You should normally leave this value at its default, unless you are interoperating with databases created by other sqlite capable applications.
Note: Two alternative syntaxes are supported for compatibility with other database extensions (such as MySQL). The preferred form is the first, where the
dbhandleparameter is the first parameter to the function.
Return Values
Returns an array of the entire result set; FALSE otherwise.
The column names returned by
SQLITE_ASSOC and SQLITE_BOTH will be
case-folded according to the value of the
sqlite.assoc_case configuration
option.
Examples
Example #1 Procedural style
<?php
$dbhandle = sqlite_open('sqlitedb');
$result = sqlite_array_query($dbhandle, 'SELECT name, email FROM users LIMIT 25', SQLITE_ASSOC);
foreach ($result as $entry) {
echo 'Name: ' . $entry['name'] . ' E-mail: ' . $entry['email'];
}
?>
Example #2 Object-oriented style
<?php
$dbhandle = new SQLiteDatabase('sqlitedb');
$result = $dbhandle->arrayQuery('SELECT name, email FROM users LIMIT 25', SQLITE_ASSOC);
foreach ($result as $entry) {
echo 'Name: ' . $entry['name'] . ' E-mail: ' . $entry['email'];
}
?>
See Also
- sqlite_query() - Executes a query against a given database and returns a result handle
- sqlite_fetch_array() - Fetches the next row from a result set as an array
- sqlite_fetch_string() - Alias of sqlite_fetch_single
- PHP Руководство
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- sqlite_unbuffered_query
- sqlite_valid
Коментарии
Do not use this code, whenever you may get no result:
<?
$return_data=@sqlite_array_query($query,$databaseHandle);
if(!$return_data)
{
//Errorhandling code
die( sqlite_error_string( sqlite_last_error($this->databaseHandle) ) );
}
?>
It will execute the Errorhandling code although there is no error, cause if there is nothing found, sqlite_array_query returns an empty array, which is interpreted as 'false' here.
You will get an Message like:
'not an error'
Instead use:
<?
$return_data=@sqlite_array_query($query,$databaseHandle);
if($return_data===false)
{
//Errorhandling code
}
?>