PDOStatement::columnCount
This function doesn't print parameter values despite the documentation says it does. See https://bugs.php.net/bug.php?id=52384 (filed back in 2010).
PDOStatement::debugDumpParams
(PHP 5 >= 5.1.0, PECL pdo >= 0.9.0)
PDOStatement::debugDumpParams — Dump an SQL prepared command
Descrição
bool PDOStatement::debugDumpParams
( void
)
Dumps the informations contained by a prepared statement directly on the output. It will provide the SQL query in use, the number of parameters used (Params), the list of parameters, with their name, type (paramtype) as an integer, their key name or position, the value, and the position in the query (if this is supported by the PDO driver, otherwise, it will be -1).
This is a debug function, which dump directly the data on the normal output.
Dica
Como toda saída é normalmente enviada direto para o browser, as Funções de Controle de Output podem ser usadas para capturar o resultado e guardá-lo em uma string (por exemplo).
This will only dumps the parameters in the statement at the moment of the dump. Extra parameters are not stored in the statement, and not displayed.
Valor Retornado
Não há valor retornado.
Exemplos
Exemplo #1 PDOStatement::debugDumpParams() example with named parameters
<?php
/* Execute a prepared statement by binding PHP variables */
$calories = 150;
$colour = 'red';
$sth = $dbh->prepare('SELECT name, colour, calories
FROM fruit
WHERE calories < :calories AND colour = :colour');
$sth->bindParam(':calories', $calories, PDO::PARAM_INT);
$sth->bindValue(':colour', $colour, PDO::PARAM_STR, 12);
$sth->execute();
$sth->debugDumpParams();
?>
O exemplo acima irá imprimir:
SQL: [96] SELECT name, colour, calories
FROM fruit
WHERE calories < :calories AND colour = :colour
Params: 2
Key: Name: [9] :calories
paramno=-1
name=[9] ":calories"
is_param=1
param_type=1
Key: Name: [7] :colour
paramno=-1
name=[7] ":colour"
is_param=1
param_type=2
Exemplo #2 PDOStatement::debugDumpParams() example with unnamed parameters
<?php
/* Execute a prepared statement by binding PHP variables */
$calories = 150;
$colour = 'red';
$name = 'apple';
$sth = $dbh->prepare('SELECT name, colour, calories
FROM fruit
WHERE calories < ? AND colour = ?');
$sth->bindParam(1, $calories, PDO::PARAM_INT);
$sth->bindValue(2, $colour, PDO::PARAM_STR);
$sth->execute();
$sth->debugDumpParams();
?>
O exemplo acima irá imprimir:
SQL: [82] SELECT name, colour, calories
FROM fruit
WHERE calories < ? AND colour = ?
Params: 2
Key: Position #0:
paramno=0
name=[0] ""
is_param=1
param_type=1
Key: Position #1:
paramno=1
name=[0] ""
is_param=1
param_type=2
Veja Também
- PDO::prepare() - Prepares a statement for execution and returns a statement object
- PDOStatement::bindParam() - Binds a parameter to the specified variable name
- PDOStatement::bindValue() - Binds a value to a parameter
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User Contributed Notes
PDOStatement::debugDumpParams - [2 notes]
thefox ¶
1 month ago
mattspopcorn at gmail dot com ¶
3 years ago
It's not you, in PHP 5.2.6 and close versions this has an infinite loop bug. Upgrade to the latest php where it has been fixed.