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DB_common::execute()

DB_common::execute() -- Executes a prepared SQL statement

Synopsis

mixed &execute (resource $stmt [, mixed $data = array()])

Description

Merges the SQL statement you submitted to prepare() with the information in $data and then sends the query to the database.

Parameter

resource $stmt

query handle from prepare()

mixed $data

array, string or numeric data to be added to the prepared statement. Quantity of items passed must match quantity of placeholders in the prepared statement: meaning 1 placeholder for non-array parameters or 1 placeholder per array element.

Return value

mixed - a new DB_result object for queries that return results (such as SELECT queries), DB_OK for queries that manipulate data (such as INSERT queries) or a DB_Error object on failure

Throws

Table 39-1. Possible PEAR_Error values

Error codeError messageReasonSolution
DB_ERROR_INVALID invalid SQL statement handle is not valid. Check correct processing of the SQL statement with prepare(). Note that execute() requires a handle to the statement returned by prepare(), not the statement itself.
DB_ERROR_MISMATCH mismatch Quantity of parameters didn't match quantity of placeholders in the prepared statement. Check that the number of placeholders in the prepare() statement passed to $query equals the count of entries passed to $params.
DB_ERROR_NODBSELECTED no database selected No database was chosen. Check the DSN in connect().
every other error code  Database specific error Check the database related section of PHP-Manual to detect the reason for this error. In the most cases a misformed SQL statement. Ie. using LIMIT in a SQL-Statment for an Oracle database.

Note

This function can not be called statically.

Warning

The values passed in $data must be literals. Do not submit SQL functions (for example CURDATE()). SQL functions that should be performed at execution time need to be put in the prepared statement.

Example

Example 39-1. Passing a scalar to execute()

<?php
// Once you have a valid DB object named $db...
$sth = $db->prepare('INSERT INTO numbers (number) VALUES (?)');
if (PEAR::isError($sth)) {
    die($sth->getMessage());
}

$res =& $db->execute($sth, 1);
if (PEAR::isError($res)) {
    die($res->getMessage());
}
?>

Example 39-2. Passing an array to execute()

<?php
// Once you have a valid DB object named $db...
$sth = $db->prepare('INSERT INTO numbers VALUES (?, ?, ?)');

$data = array(1, 'one', 'en');
$db->execute($sth, $data);
?>

See

"Intro - Prepare & Execute", "Intro - autoPrepare & autoExecute", prepare(), executeMultiple()

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