sqlite_busy_timeout
When executing DELETEs, I found that adding an always true WHERE clause returns the number of rows deleted.
eg: "DELETE FROM my_table WHERE 1" will delete all the rows and sqlite_changes() will return the correct number of rows deleted.
sqlite_changes
SQLiteDatabase->changes
(PHP 5, PECL sqlite >= 1.0.0)
sqlite_changes -- SQLiteDatabase->changes — Devuelve el número de filas que han sido cambiadas mediante la sentencia SQL más reciente.
Descripción
int sqlite_changes
( resource $dbhandle
)
Estilo orientado a objetos (método):
int SQLiteDatabase::changes
( void
)
Devuelve el número de filas que han sido cambiadas mediante la sentencia SQL más reciente ejecutada contra el manejador de base de datos dbhandle.
Parámetros
- dbhandle
-
El recurso de base de datos devuelto desde sqlite_open(). Este parámetro no es requerido cuando se usa el método "Orientado a objetos".
Valores devueltos
Devuelve el número de filas cambiadas.
Ejemplos
Example #1 Estilo Procedural
<?php
$dbhandle = sqlite_open('mysqlitedb');
$query = sqlite_query($dbhandle, "UPDATE users SET email='jDoe@example.com' WHERE username='jDoe'");
if (!$query) {
exit('Error in query.');
} else {
echo 'Number of rows modified: ', sqlite_changes($dbhandle);
}
?>
Example #2 Estilo Orientado a objetos
<?php
$dbhandle = new SQLiteDatabase('mysqlitedb');
$query = $dbhandle->query("UPDATE users SET email='jDoe@example.com' WHERE username='jDoe'");
if (!$query) {
exit('Error in query.');
} else {
echo 'Number of rows modified: ', $dbhandle->changes();
}
?>
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User Contributed Notes
sqlite_changes
jazz at funkynerd dot com
01-Apr-2010 05:06
bermi ferrer:at-akelos dotCom
28-Sep-2005 01:02
When counting deleted records from the database, I realized that sqlite_changes() will return 0 if you are deleting all the records without including a WHERE clause.
So after "DELETE FROM users" sqlite_open() will print 0 even if rows where deleted, but if you use "DELETE FROM users WHERE 1" you will get the right result.
I had this problem on versions 5.0.4 and 4.4.0 under Windows servers.