PHP文件无法输入部分代码

如上面的注释中所述，您应该分而治之，以使您的生活更轻松（尤其是当您在该大型函数中使用代码时编写代码）。确实很容易做到：

function file_put($number, $data) { $path = sprintf("C:/temp/wamp/www/file%d.txt", $number); file_put_contents($path, $data); } 例如，这只是替换许多重复的行，您只需要在其中放入一些（编号）文件即可。

但是您也可以使用更复杂的内容（例如数据库操作）来执行此操作。您可能希望将错误处理移到您的视线之外，并在需要时小心地连接到数据库，并以更灵活的方式来获取数据。可以通过将（已弃用的）mysql_*函数移至其自己的一两个类中来完成，以使它不被看到。这将使它的使用更加容易（我首先显示）：

// Create your database object to use it later on: $config = array( 'server' => 'localhost', 'name' => 'root', 'password' => '', 'db' => 'test', ); $db = new MySql($config); 我称它为数据库类，MySql因为它代表了mysql连接，并且可以与旧的mysql扩展一起使用。您只需要将该数据库对象传递给问题中的函数即可。结合file_put功能，它看起来像这样：

function checkin(MySql $DB, $TechID, $ClientID, $SiteID) { $query = sprintf("SELECT Type FROM Log WHERE TechID = '%d' ORDER BY LogTime DESC LIMIT 1", $TechID); file_put(5, $query);

$result1 = $DB->query("SELECT COUNT(*) FROM Log");    
$result2 = $DB->query($query);

foreach ($result1 as $row1) {
    list($count) = $row1;
    $data = "ClientID:$ClientID TechID:$TechID SiteID:$SiteID Count:$count"
    file_put(3, $data);
    foreach ($result2 as $row2) {
        file_put(4, $data);
    }
}

} 该checkin函数仍然接近大型（已经有12行代码），但是比您的第一个版本短得多，因为它委派了编写文件和访问数据库的工作。我希望这个示范有用。以下是完整的代码示例：

/** * MySql Exception */ class MySqlException extends RuntimeException { }

/** * MySql Database Class */ class MySql { private $server; private $name; private $password; private $db; private $connection;

public function __construct(array $config)
{
    $this->server = $config['server'];
    $this->name = $config['name'];
    $this->password = $config['password'];
    $this->db = $config['db'];
}

private function connect($server, $name, $password)
{
    $this->connection = mysql_connect($server, $name, $password);
    if (!$this->connection) {
        $this->error("Unable to connect to '%s' as user '%s'", $server, $name);
    }
}

private function select($db)
{
    if (!mysql_select_db($db, $this->connection)) {
        $this->error("Unable to select database '%s'", $db);
    }
}

private function close()
{
    $this->connection && mysql_close($this->connection);
}

private function connectSelect()
{
    $this->connect($this->server, $this->name, $this->password);
    $this->select($this->db);
}

/**
 * @param $query
 * @return MySqlResult
 */
public function query($query)
{
    $this->connection || $this->connectSelect();
    $result = mysql_query($query, $this->connection);
    if (!$result) {
        $this->error("Unable to execute query '%s'", $query);
    }
    return new MySqlResult($result);
}

/**
 * @param string $format
 * @param ...
 * @throws MySqlException
 */
private function error($format)
{
    $args = func_get_args();
    array_shift($args);
    $format .= ': %s';
    $args[] = $this->connection ? mysql_error($this->connection) : mysql_error();
    throw new MySqlException(vsprintf($format, $args));
}

public function __destruct()
{
    $this->close();
}

}

/** * MySql Result Set - Array Based */ class MySqlResult implements Iterator, Countable { private $result; private $index = 0; private $current;

public function __construct($result)
{
    $this->result = $result;
}

public function fetch($result_type = MYSQL_BOTH)
{
    $this->current = mysql_fetch_array($this->result, $result_type);
    return $this->current;
}

/**
 * Return the current element
 * @link http://php.net/manual/en/iterator.current.php
 * @return array
 */
public function current()
{
    return $this->current;
}

public function next()
{
    $this->current && $this->fetch();
}

/**
 * Return the key of the current element
 * @link http://php.net/manual/en/iterator.key.php
 * @return mixed scalar on success, or null on failure.
 */
public function key()
{
    return $this->current ? $this->index : null;
}

/**
 * Checks if current position is valid
 * @link http://php.net/manual/en/iterator.valid.php
 * @return boolean The return value will be casted to boolean and then evaluated.
 * Returns true on success or false on failure.
 */
public function valid()
{
    return (bool)$this->current;
}来源：stack overflow