Just to point out that "CREATE TABLE IF NOT EXISTS" is only supported in SQLite version 3.3.0 or above. And PHP (currently 5.2.5) only comes with SQLite version 2.1.
Executing a create table like this will throw an error as will creating a table that already exists. Instead execute a normal "CREATE TABLE" command and catch it with "try {..} catch".
sqlite_exec
SQLiteDatabase::exec
(PHP 5 < 5.4.0, PECL sqlite >= 1.0.3)
sqlite_exec -- SQLiteDatabase::exec — Executes a result-less query against a given database
Descrierea
sqlite_exec
( resource
$dbhandle
, string $query
[, string &$error_msg
] ) : bool
sqlite_exec
( string
$query
, resource $dbhandle
) : boolStil obiect-orientat (method):
public SQLiteDatabase::queryExec
( string
$query
[, string &$error_msg
] ) : bool
Executes an SQL statement given by the query against
a given database handle (specified by the dbhandle
parameter).
Avertizare
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.
Parametri
-
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.
-
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.
Notă: Două sintaxe alternative sunt susținute pentru compatibilitate cu alte extensii de baze de date (cum ar fi MySQL). Forma preferată este cea dintâi, unde parametrul
dbhandleeste primul parametru pentru funcție.
Valorile întoarse
This function will return a boolean result; TRUE for success or FALSE for failure.
If you need to run a query that returns rows, see sqlite_query().
În
denumirile coloanelor întoarse de SQLITE_ASSOC și
SQLITE_BOTH vor fi utilizate litere majuscule/minuscule
în corespundere cu valoarea opțiunii de configurare
sqlite.assoc_case.
Istoricul schimbărilor
| Versiune | Descriere |
|---|---|
| 5.1.0 |
Added the error_msg parameter
|
Exemple
Example #1 Procedural example
<?php
$dbhandle = sqlite_open('mysqlitedb');
$query = sqlite_exec($dbhandle, "UPDATE users SET email='jDoe@example.com' WHERE username='jDoe'", $error);
if (!$query) {
exit("Error in query: '$error'");
} else {
echo 'Number of rows modified: ', sqlite_changes($dbhandle);
}
?>
Example #2 Object-oriented example
<?php
$dbhandle = new SQLiteDatabase('mysqlitedb');
$query = $dbhandle->queryExec("UPDATE users SET email='jDoe@example.com' WHERE username='jDoe'", $error);
if (!$query) {
exit("Error in query: '$error'");
} else {
echo 'Number of rows modified: ', $dbhandle->changes();
}
?>
A se vedea și
- sqlite_query() - Executes a query against a given database and returns a result handle
- sqlite_unbuffered_query() - Execute a query that does not prefetch and buffer all data
- sqlite_array_query() - Execute a query against a given database and returns an array
add a note
User Contributed Notes 2 notes
nonproffessional at clockworkgeek dot com ¶
16 years ago
rrf5000 at psu dot edu ¶
16 years ago
If you run a multiline SQL command (an INSERT, for example), and there is a SQL error in any of the lines, this function will recognize the error and return FALSE. However, any correct commands before the one with the error will still execute. Additionally, if you run changes() after such an incident, it will report that 0 rows have been changed, even though there were rows added to the table by the successful commands.
An example would be:
<?php
// create new database (OO interface)
$dbo = new SQLiteDatabase("db/database.sqlite");
// create table foo
$dbo->query("CREATE TABLE foo(id INTEGER PRIMARY KEY, name CHAR(255));");
// insert sample data
$ins_query = "INSERT INTO foo (name) VALUES ('Ilia1');
INSERT INTO foo (name) VALUES('Ilia2');
INSECT INTO foo (name) VALUES('Ilia3');";
$dbo->queryExec($ins_query);
// get number of rows changed
$changes = $dbo->changes();
echo "<br />Rows changed: $changes<br />";
// Get and show inputted data
$tableArray = $dbo->arrayQuery("SELECT * FROM foo;");
echo "Table Contents\n";
echo "<pre>\n";
print_r($tableArray);
echo "\n</pre>";
?>
The above code should show that 0 rows have been changed, but that there is new data in the table.
