(PHP 5 < 5.4.0, PECL sqlite >= 1.0.0)
sqlite_query -- SQLiteDatabase::query — Executes a query against a given database and returns a result handle
$dbhandle
, string $query
[, int $result_type = SQLITE_BOTH
[, string &$error_msg
]] )$query
, resource $dbhandle
[, int $result_type = SQLITE_BOTH
[, string &$error_msg
]] )Styl obiektowy (method):
$query
[, int $result_type = SQLITE_BOTH
[, string &$error_msg
]] )
Executes an SQL statement given by the query against
a given database handle.
dbhandle
The SQLite Database resource; returned from sqlite_open() when used procedurally. This parameter is not required when using the object-oriented method.
query
The query to be executed.
Data inside the query should be properly escaped.
result_type
Opcjonalny parametr result_type
przyjmuje wartości stałych i określa jak indeksowane będą zwracane wartości.
Używając SQLITE_ASSOC zwrócone zostaną tylko indeksy
asocjacyjne (nazwy pól), podczas gdy SQLITE_NUM zwróci
tylko indeksy numeryczne (numery pól). SQLITE_BOTH zwróci
i indeksy asocjacyjne i numeryczne. SQLITE_BOTH jest
domyślną wartością dla tej funkcji.
error_msg
The specified variable will be filled if an error occurs. This is specially important because SQL syntax errors can't be fetched using the sqlite_last_error() function.
Informacja: Obsługiwane są dwie alternatywne składnie, dla zachowania kompatybilności z rozszerzeniami dla innych baz danych (takich jak MySQL). Preferowana jest pierwsza, gdzie
dbhandlejest pierwszym parametrem funkcji.
This function will return a result handle lub FALSE w przypadku niepowodzenia.
For queries that return rows, the result handle can then be used with
functions such as sqlite_fetch_array() and
sqlite_seek().
Regardless of the query type, this function will return FALSE if the
query failed.
sqlite_query() returns a buffered, seekable result handle. This is useful for reasonably small queries where you need to be able to randomly access the rows. Buffered result handles will allocate memory to hold the entire result and will not return until it has been fetched. If you only need sequential access to the data, it is recommended that you use the much higher performance sqlite_unbuffered_query() instead.
| Wersja | Opis |
|---|---|
| 5.1.0 |
Added the error_msg parameter
|
SQLite will execute multiple queries separated by semicolons, so you can use it to execute a batch of SQL that you have loaded from a file or have embedded in a script. However, this works only when the result of the function is not used - if it is used, only the first SQL statement would be executed. Function sqlite_exec() will always execute multiple SQL statements.
When executing multiple queries, the return value of this function
will be FALSE if there was an error, but undefined otherwise (it might
be TRUE for success or it might return a result handle).