Lost some hours to find out how to save multirows result of mysqli_stmt to array, when get_result prohibited.
Idea, which works is using store_result
$stmt=$this->mysqli->prepare("SELECT surname, name, user_id, last_m_own, last_m_str, role FROM users WHERE referer_id=(?)");
$stmt->bind_param('i',$referer_id);
$stmt->execute();
$stmt->store_result();
$stmt->bind_result($ans['surname'], $ans['name'], $ans['user_id'], $ans['last_m_own'], $ans['last_m_str'], $ans['role']);
$j=$stmt->num_rows;
for ($i=0;$i<$j;$i++){
$stmt->data_seek($i);
$stmt->fetch();
foreach ($ans as $key=>$value){
$result[$i][$key]=$value;
}
}
Hope will helpful for such newbies as me
mysqli_stmt::store_result
mysqli_stmt_store_result
(PHP 5, PHP 7, PHP 8)
mysqli_stmt::store_result -- mysqli_stmt_store_result — Armazena um conjunto de resultados em um buffer interno
Descrição
Estilo orientado a objetos
Estilo procedural
Esta função deve ser chamada, para consultas que produzem com sucesso
um conjunto de resultados (ex.: SELECT, SHOW, DESCRIBE, EXPLAIN),
seomente se o resultado completo precisa ser mantido em buffer no PHP. Cada chamada subsequente a
mysqli_stmt_fetch() retornará dados em buffer.
Nota:
É desnecessário chamar mysqli_stmt_store_result() para outras conultas, mas se isto for feito, não irá causar dano ou qualquer perda notável de desempenho em qualquer caso. Pode-se detectar se a consulta produziu resultado verificando se a função mysqli_stmt_result_metadata() retorna
false.
Parâmetros
-
statement -
Somente no estilo procedural: Um objeto mysqli_stmt retornado por mysqli_stmt_init().
Valor Retornado
Retorna true em caso de sucesso ou false em caso de falha.
Erros/Exceções
Se o relatório de erros da extensão mysqli estiver habilitado (MYSQLI_REPORT_ERROR) e a operação solicitada falhar,
um aviso será gerado. Se, além disso, o modo for definido como MYSQLI_REPORT_STRICT,
uma exceção mysqli_sql_exception será lançada em vez do aviso.
Exemplos
Exemplo #1 Estilo orientado a objetos
<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
$query = "SELECT Name, CountryCode FROM City ORDER BY Name LIMIT 20";
$stmt = $mysqli->prepare($query);
$stmt->execute();
/* armazena o resultado em um buffer interno */
$stmt->store_result();
printf("Número de linhas: %d.\n", $stmt->num_rows);Exemplo #2 Estilo procedural
<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
$query = "SELECT Name, CountryCode FROM City ORDER BY Name LIMIT 20";
$stmt = mysqli_prepare($link, $query);
mysqli_stmt_execute($stmt);
/* armazena o resultado em um buffer interno */
mysqli_stmt_store_result($stmt);
printf("Número de linhas: %d.\n", mysqli_stmt_num_rows($stmt));Os exemplos acima produzirão:
Número de linhas: 20.
Veja Também
- mysqli_prepare() - Prepara uma instrução SQL para execução
- mysqli_stmt_result_metadata() - Retorna os metadados de resultado de uma instrução preparada
- mysqli_stmt_fetch() - Recebe resultados de uma instrução preparada nas variáveis vinculadas
add a note
User Contributed Notes 5 notes
kitlum AT ukr DOT net ¶
9 years ago
pcc at pccglobal dot com ¶
14 years ago
When using prepare to prepare a statement to retrieve LOBs the method order matters.
Also, method 'store_result()' must be called and be called in correct order.
Failure to observe this causes PHP/MySQLi to crash or return an erroneous value.
The proper procedure order is: prepare -> execute -> store_result -> bind -> fetch
The following applies to a Windows SBS server running IIS/6.0 + PHP 5.2.1
MySQL server version 5.0.26-community-nt, client version 5.0.51a
<?php
$database = "test" ;
$table = "test" ;
$column = "flongblob" ;
$mysqli = new mysqli("localhost", "root", "<secret_password>", $database);
// Proper procedure order: prepare -> execute -> store_result -> bind -> fetch
$stmt = $mysqli->prepare("SELECT `$column` FROM `$table`") ;
$stmt->execute();
$stmt->store_result();
// Fetch a record. Bind the result to a variable called 'value' and fetch.
$stmt->bind_result($value) ;
$res = $stmt->fetch() ;
if($res)
{
// strlen($value) should have LOB length, not 1 or zero.
echo "$column data length is " . strlen($value) . " bytes.\n" ;
}
else
{
echo ((false !== $res) ? "End of data" : $stmt->error) . "\n" ;
break ;
}
// Fetch another record.
$res = $stmt->fetch() ;
if($res)
{
// strlen($value) should have LOB length, not 1 or zero.
echo "$column data length is " . strlen($value) . " bytes.\n" ;
}
else
{
echo ((false !== $res) ? "End of data" : $stmt->error) . "\n" ;
break ;
}
$stmt->close() ;
$mysqli->close() ;
exit ;
?>
The above example should output:
flongblob data length is 932353 bytes.
flongblob data length is 867300 bytes.
If wrong procedure order MySQLi crashes or outputs:
flongblob data length is 0 bytes.
flongblob data length is 867300 bytes.
neromir at hotmail dot com ¶
16 years ago
The wording above, in the initial description of the function, can be confusing (quoted below).
"You must call mysqli_stmt_store_result() for every query that successfully produces a result set (SELECT, SHOW, DESCRIBE, EXPLAIN), and only if you want to buffer the complete result set by the client, so that the subsequent mysqli_stmt_fetch() call returns buffered data. "
I had initially understood the part saying "and only if you want to buffer..." to mean that it was only necessary to call this function if you wanted to buffer the result set. This, however, is not the case, and the misunderstanding caused me quite a bit of grief.
So, to clarify for anyone suffering from the same misunderstanding, you ALWAYS must call this function for every query that produces a result set (as listed in the parentheses of the quote above), as far as I can tell.
UCFirefly (at) yahoo.com ¶
18 years ago
fetch_fields() does not seem to be compatible with prepared statements like those used here. Makes things difficult if you're using a wildcard. I guess that's better for security in some obscure way.
Typer85 at gmail dot com ¶
17 years ago
In response to the note below me for the claim that mysqli_fetch_fields is not compatible with prepared statements.
This is untrue, it is but you have to do a little extra work. I would recommend you use a wrapper function of some sort to take care of the dirty business for you but the basic idea is the same.
Let's assume you have a prepared statement like so. I am going to use the procedural way for simplicity but the same idea can be done using the object oriented way:
<?php
// Connect Blah Blah Blah.
$connectionLink = mysqli_connect( .... );
// Query Blab Blah Blah.
$query = "Select `Id` From `Table` Where `Id` = ?";
// Prepare Query.
$prepareObject = mysqli_prepare( $connectionLink , $query );
// Bind Query.
mysqli_stmt_bind_param( $prepareObject , 'i' , 1 );
// Execute Query.
mysqli_stmt_execute( $prepareObject );
?>
Now all the above is fine and dandy to anyone familiar with using prepared statements, but if I want to use mysqli_fetch_fields or any other function that fetches meta information about a result set but does not work on prepared statements?
Enter the special function mysqli_stmt_result_metadata. It can be used as follows, assume the following code segment immediatley follows that of the above code segment.
<?php
$metaData = mysqli_stmt_result_metadata( $prepareObject );
// I Can Now Call mysqli_fetch_fields using the variable
// $metaData as an argument.
$fieldInfo = mysqli_fetch_fields( $metaData );
// Or Even This.
$fieldInfo = mysqli_num_fields( $metaData );
?>
Take a look at the Manual entry for mysqli_stmt_result_metatdata function for full details on how to expose it with prepared statements.
Good Luck,
