Prepares an SQL statement for execution

# SQLite3::prepare

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SQLite3::prepare — Prepares an SQL statement for execution

### 说明

public function SQLite3::prepare(string `$query`): SQLite3Stmt|false

Prepares an SQL statement for execution and returns an SQLite3Stmt object.

### 参数

`query`

  The SQL query to prepare.

### 返回值

Returns an SQLite3Stmt object on success 或者在失败时返回 `false`.

### 示例

示例 #1 SQLite3::prepare() example

    <?php
    unlink('mysqlitedb.db');
    $db = new SQLite3('mysqlitedb.db');

    $db->exec('CREATE TABLE foo (id INTEGER, bar STRING)');
    $db->exec("INSERT INTO foo (id, bar) VALUES (1, 'This is a test')");

    $stmt = $db->prepare('SELECT bar FROM foo WHERE id=:id');
    $stmt->bindValue(':id', 1, SQLITE3_INTEGER);

    $result = $stmt->execute();
    var_dump($result->fetchArray());
    ?>

### 参见

- SQLite3Stmt::paramCount() - Returns the number of parameters within the prepared statement
- SQLite3Stmt::bindValue() - Binds the value of a parameter to a statement variable
- SQLite3Stmt::bindParam() - Binds a parameter to a statement variable

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