mysqli::stmt_init
It also seems, that executing a SET statement in multi_query() returns an extra recordset too, which one would not expect.
mysqli::store_result
mysqli_store_result
(PHP 5)
mysqli::store_result -- mysqli_store_result — Transfers a result set from the last query
Descrição
Object oriented style (method):
mysqli_result mysqli::store_result
( void
)
Procedural style:
Transfers the result set from the last query on the database connection represented by the link parameter to be used with the mysqli_data_seek() function.
Parâmetros
- link
-
Apenas para estilo de procedimento: Um identificador de conexão retornado por mysqli_connect() or mysqli_init()
Valor Retornado
Returns a buffered result object or FALSE if an error occurred.
Nota: mysqli_store_result() returns FALSE in case the query didn't return a result set (if the query was, for example an INSERT statement). This function also returns FALSE if the reading of the result set failed. You can check if you have got an error by checking if mysqli_error() doesn't return an empty string, if mysqli_errno() returns a non zero value, or if mysqli_field_count() returns a non zero value. Also possible reason for this function returning FALSE after successful call to mysqli_query() can be too large result set (memory for it cannot be allocated). If mysqli_field_count() returns a non-zero value, the statement should have produced a non-empty result set.
Notas
Nota: Although it is always good practice to free the memory used by the result of a query using the mysqli_free_result() function, when transferring large result sets using the mysqli_store_result() this becomes particularly important.
Exemplos
See mysqli_multi_query().
Veja Também
- mysqli_real_query() - Execute an SQL query
- mysqli_use_result() - Initiate a result set retrieval
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User Contributed Notesmysqli::store_result
Warner
21-Jul-2009 09:45
21-Jul-2009 09:45
lau at goldenweb dot com dot au
13-Apr-2007 08:29
13-Apr-2007 08:29
Beware when using stored procedures:
If you connect to the database and then call dbproc A followed by a call to db proc B and then close the connection to the db, the second procedure call will not work.
It looks like there is a bug in MYSQL or mysqli that returns an extra recordset than you would expect. It then doesn't let you call another stored procedure until you finish processing all the recordsets from the first stored procedure call.
The solution is to simply loop through the additional recordsets between calls to db procs. Here is a function that I call between db proc calls:
<?php
#--------------------------------
function ClearRecordsets($p_Result){
#--------------------------------
$p_Result->free();
while($this->Mysqli->next_result()){
if($l_result = $this->Mysqli->store_result()){
$l_result->free();
}
}
}
?>