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# PDOStatement::execute

(PHP 5 >= 5.1.0, PECL pdo >= 0.1.0)

PDOStatement::execute — Executes a prepared statement

### Description

public bool PDOStatement::execute ([ array `$input_parameters` ] )

Execute the prepared statement. If the prepared statement included parameter markers, you must either:

- call PDOStatement::bindParam() to bind PHP variables to the parameter markers: bound variables pass their value as input and receive the output value, if any, of their associated parameter markers

- or pass an array of input-only parameter values

### Parameters

`input_parameters`

  An array of values with as many elements as there are bound parameters in the SQL statement being executed. All values are treated as `PDO::PARAM_STR`.

  You cannot bind multiple values to a single parameter; for example, you cannot bind two values to a single named parameter in an IN() clause.

  You cannot bind more values than specified; if more keys exist in `input_parameters` than in the SQL specified in the PDO::prepare(), then the statement will fail and an error is emitted.

### Return Values

Returns `TRUE` on success or `FALSE` on failure.

### Changelog

Version | Description
--- | ---
5.2.0 | The keys from `input_parameters` must match the ones declared in the SQL. Before PHP 5.2.0 this was silently ignored.

### Examples

Example #1 Execute a prepared statement with bound variables

`<?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->bindParam(':colour', $colour, PDO::PARAM_STR, 12);
$sth->execute();
?>`

Example #2 Execute a prepared statement with an array of insert values (named parameters)

`<?php
/* Execute a prepared statement by passing an array of insert values */
$calories = 150;
$colour = 'red';
$sth = $dbh->prepare('SELECT name, colour, calories
FROM fruit
WHERE calories < :calories AND colour = :colour');
$sth->execute(array(':calories' => $calories, ':colour' => $colour));
?>`

Example #3 Execute a prepared statement with an array of insert values (placeholders)

`<?php
/* Execute a prepared statement by passing an array of insert values */
$calories = 150;
$colour = 'red';
$sth = $dbh->prepare('SELECT name, colour, calories
FROM fruit
WHERE calories < ? AND colour = ?');
$sth->execute(array($calories, $colour));
?>`

Example #4 Execute a prepared statement with question mark placeholders

`<?php
/* Execute a prepared statement by binding PHP variables */
$calories = 150;
$colour = 'red';
$sth = $dbh->prepare('SELECT name, colour, calories
FROM fruit
WHERE calories < ? AND colour = ?');
$sth->bindParam(1, $calories, PDO::PARAM_INT);
$sth->bindParam(2, $colour, PDO::PARAM_STR, 12);
$sth->execute();
?>`

Example #5 Execute a prepared statement using array for IN clause

`<?php
/* Execute a prepared statement using an array of values for an IN clause */
$params = array(1, 21, 63, 171);
/* Create a string for the parameter placeholders filled to the number of params */
$place_holders = implode(',', array_fill(0, count($params), '?'));
/*
This prepares the statement with enough unnamed placeholders for every value
in our $params array. The values of the $params array are then bound to the
placeholders in the prepared statement when the statement is executed.
This is not the same thing as using PDOStatement::bindParam() since this
requires a reference to the variable. PDOStatement::execute() only binds
by value instead.
*/
$sth = $dbh->prepare("SELECT id, name FROM contacts WHERE id IN ($place_holders)");
$sth->execute($params);
?>`

### Notes

> Note:

> Some drivers require to close cursor before executing next statement.

### 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::fetch() - Fetches the next row from a result set
- PDOStatement::fetchAll() - Returns an array containing all of the result set rows
- PDOStatement::fetchColumn() - Returns a single column from the next row of a result set

PDOStatement::errorInfo
PDOStatement::fetch
PDOStatement
PHP Manual