全局PHP函数通过类链接

Question

是否可以通过对象/类链接所有PHP函数？

我有这个想法,我想这样的事情:

$c = new Chainer();

$c->strtolower('StackOverFlow')->ucwords(/* the value from the first function argument */)->str_replace('St', 'B', /* the value from the first function argument */);

这应该产生:

Backoverflow

谢谢.

Answer 1

看一下:

http://php.net/manual/en/language.oop5.magic.php

特别:

http://www.php.net/manual/en/language.oop5.overloading.php#language.oop5.overloading.methods

并且可以:

http://php.net/manual/en/function.call-user-func-array.php

正如许多人发布他们的例子,我也会尝试:

<?php
class Chainer
{
    protected $buffer = null;

    public function __call($name, $args) {
        if (method_exists($this, $name)) {
            $this->buffer = call_user_func_array(array($this, $name), $args);
        }
        elseif (function_exists($name)) {
            if ($this->buffer !== null) {
                $args[] = $this->buffer;
            }

            $this->buffer = call_user_func_array($name, $args);
        }

        return $this;
    }

    public function strpos($needle, $offset = 0) {
        return strpos($this->buffer, $needle, $offset);
    }

    public function __toString() {
        return (string)$this->buffer;
    }
}

$c = new Chainer();
echo $c->strtolower('StackOverFlow')->ucwords()->str_replace('St', 'B')->strpos('overflow'); // output: 4