(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.9.0)
PDOStatement::debugDumpParams — Dump an SQL prepared command
Dumps the information 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 key name or position, their name, their position in the query (if this is supported by the PDO driver, otherwise, it will be -1), type (param_type) as an integer, and a boolean value is_param.
This is a debug function, which dumps the data directly to the normal output.
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 dump the parameters in the statement at the moment of the dump. Extra parameters are not stored in the statement, and not displayed.
Não há valor retornado.
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