PDOStatement::execute

Executes a prepared statement

&reftitle.description; public `bool` `PDOStatement::execute` ``array``null```params`&null;

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

- `PDOStatement::bindParam` and/or `PDOStatement::bindValue` has to be called to bind either variables or values (respectively) to the parameter markers. Bound variables pass their value as input and receive the output value, if any, of their associated parameter markers

- or an array of input-only parameter values has to be passed

&reftitle.parameters;

`params`

- 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`.

  Multiple values cannot be bound to a single parameter; for example, it is not allowed to bind two values to a single named parameter in an IN() clause.

  Binding more values than specified is not possible; if more keys exist in `params` than in the SQL specified in the `PDO::prepare`, then the statement will fail and an error is emitted.

&reftitle.returnvalues;

&return.success;

&reftitle.errors; &pdo.errors;
&reftitle.examples;

### Execute a prepared statement with a bound variable and value

    <?php
    /* Execute a prepared statement by binding a variable and value */
    $calories = 150;
    $colour = 'gre';
    $sth = $dbh->prepare('SELECT name, colour, calories
        FROM fruit
        WHERE calories < :calories AND colour LIKE :colour');
    $sth->bindParam('calories', $calories, PDO::PARAM_INT);
    /* Names can be prefixed with colons ":" too (optional) */
    $sth->bindValue(':colour', "%$colour%");
    $sth->execute();
    ?>

### Execute a prepared statement with an array of named values

    <?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));
    /* Array keys can be prefixed with colons ":" too (optional) */
    $sth->execute(array(':calories' => $calories, ':colour' => $colour));
    ?>

### Execute a prepared statement with an array of positional values

    <?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));
    ?>

### Execute a prepared statement with variables bound to positional 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();
    ?>

### 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);
    ?>

&reftitle.notes;

Some drivers require to close cursor before executing next statement.

&reftitle.seealso;

- `PDO::prepare`
- `PDOStatement::bindParam`
- `PDOStatement::fetch`
- `PDOStatement::fetchAll`
- `PDOStatement::fetchColumn`