php 解决公共function的问题

是用include那份php文件。然后通过某个类，在公共function外再包上一层，将function 定义成 static function。然后通过命名空间调用。

 

eg:

HtmlDomParser.php

<?php

namespace simple_html_dom;

include_once 'simple_html_dom.php';

class HtmlDomParser
{

    /**
     * @return \simple_html_dom
     */
    static public function file_get_html()
    {return call_user_func_array('simple_html_dom\file_get_html', func_get_args());
    }

    /**
     * get html dom from string
     * @return \simple_html_dom
     */
    static public function str_get_html()
    {
        return call_user_func_array('simple_html_dom\str_get_html', func_get_args());
    }
}

 

simple_html_dom.php

<?php
namespace simple_html_dom;

function file_get_html($url, $use_include_path = false, $context = null, $offset = -1, $maxLen = -1, $lowercase = true, $forceTagsClosed = true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN = true, $defaultBRText = DEFAULT_BR_TEXT, $defaultSpanText = DEFAULT_SPAN_TEXT)
{
    // We DO force the tags to be terminated.
    $dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText);
    // For sourceforge users: uncomment the next line and comment the retreive_url_contents line 2 lines down if it is not already done.
    $contents = file_get_contents($url, $use_include_path, $context, $offset);
    // Paperg - use our own mechanism for getting the contents as we want to control the timeout.
    //$contents = retrieve_url_contents($url);
    if (empty($contents) || strlen($contents) > MAX_FILE_SIZE) {
        return false;
    }
    // The second parameter can force the selectors to all be lowercase.
    $dom->load($contents, $lowercase, $stripRN);
    return $dom;
}

// get html dom from string
function str_get_html($str, $lowercase = true, $forceTagsClosed = true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN = true, $defaultBRText = DEFAULT_BR_TEXT, $defaultSpanText = DEFAULT_SPAN_TEXT)
{
    $dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText);
    if (empty($str) || strlen($str) > MAX_FILE_SIZE) {
        $dom->clear();
        return false;
    }
    $dom->load($str, $lowercase, $stripRN);
    return $dom;
}

// dump html dom tree
function dump_html_tree($node, $show_attr = true, $deep = 0)
{
    $node->dump($node);
}