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PDO::exec

(no version information, might be only in CVS)

PDO::exec --  Execute an SQL statement and return the number of affected rows

Description

long PDO::exec ( string statement )

Warning

This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

PDO::exec() prepares and executes an SQL statement in a single function call, returning the number of rows affected by the statement.

PDO::exec() does not return results from a SELECT statement. For a SELECT statement that you only need to issue once during your program, consider issuing PDO::query(). For a SELECT statement that you need to issue multiple times, prepare a PDOStatement object with PDO::prepare() and issue the statement with PDOStatement::execute().

Parameters

statement

The SQL statement to prepare and execute.

Return Values

PDO::exec() returns the number of rows that were modified or deleted by the SQL statement you issued. If no rows were affected, PDO::exec() returns 0.

Examples

Example 1. Issuing a DELETE statement

Count the number of rows deleted by a DELETE statement with no WHERE clause.

<?php
$dbh = new PDO('odbc:sample', 'db2inst1', 'ibmdb2');

/* Delete all rows from the FRUIT table */
$count = $dbh->exec("DELETE FROM fruit WHERE colour = 'red'");

/* Return number of rows that were deleted */
print("Return number of rows that were deleted:\n");
print("Deleted $count rows.\n");
?>

The above example will output:

Return number of rows that were deleted:
Deleted 1 rows.

See Also

PDO::prepare()
PDO::query()
PDOStatement::execute()

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