PDOStatement::debugDumpParams
(PHP 5 >= 5.1.0, PECL pdo >= 0.9.0)
PDOStatement::debugDumpParams — Dump an SQL prepared command
Description ¶
public void PDOStatement::debugDumpParams ( void )
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.
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.
Return Values ¶
No value is returned.
Examples ¶
Example #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();
$sth->debugDumpParams();
?>
The above example will output:
SQL: [96] SELECT name, colour, calories FROM fruit WHERE calories < :calories AND colour = :colour Params: 2 Key: Name: [9] :calories paramno=-1 name=[9] ":calories" is_param=1 param_type=1 Key: Name: [7] :colour paramno=-1 name=[7] ":colour" is_param=1 param_type=2
Example #2 PDOStatement::debugDumpParams() example with unnamed parameters
<?php
/* Execute a prepared statement by binding PHP variables */$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();
?>
The above example will output:
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
See Also ¶
- 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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