# classkit_method_add

(PECL classkit >= 0.1)

classkit_method_add — Dynamically adds a new method to a given class

### 说明

classkit_method_add ( string `$classname` , string `$methodname` , string `$args` , string `$code` [, int `$flags` = CLASSKIT_ACC_PUBLIC ] ) : bool
Warning

此函数是实验性的。此函数的表象，包括名称及其相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本函数风险自担 。

### 参数

`classname`

  The class to which this method will be added

`methodname`

  The name of the method to add

`args`

  Comma-delimited list of arguments for the newly-created method

`code`

  The code to be evaluated when `methodname` is called

`flags`

  The type of method to create, can be `CLASSKIT_ACC_PUBLIC`, `CLASSKIT_ACC_PROTECTED` or `CLASSKIT_ACC_PRIVATE`

  > Note:

  > This parameter is only used as of PHP 5, because, prior to this, all methods were public.

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。

### 范例

Example #1 classkit_method_add() example

    <?php
    class Example {
        function foo() {
            echo "foo!\n";
        }
    }

    // create an Example object
    $e = new Example();

    // Add a new public method
    classkit_method_add(
        'Example',
        'add',
        '$num1, $num2',
        'return $num1 + $num2;',
        CLASSKIT_ACC_PUBLIC
    );

    // add 12 + 4
    echo $e->add(12, 4);
    ?>

以上例程会输出：

    16

### 参见

- classkit_method_copy() - Copies a method from class to another
- classkit_method_redefine() - Dynamically changes the code of the given method
- classkit_method_remove() - Dynamically removes the given method
- classkit_method_rename() - Dynamically changes the name of the given method
- create_function() - Create an anonymous (lambda-style) function