preg_replace修改来自curl的SRC和HREF url

Question

我需要替换curl带走的页面中的URL，并向图像和链接添加正确的链接。 我的PHP curl代码是：

<?php

function getPage($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);

    $result = curl_exec($ch);
    curl_close($ch);

    if (!preg_match('/src="https?:\/\/"/', $result))
    $result = preg_replace('/src="(.*)"/', "src=\"http://support.prophpbb.com/\\1\"", $result);
    if (!preg_match('/href="https?:\/\/"/', $result))
    $result = preg_replace('/href="(.*)"/', "href=\"http://support.prophpbb.com/\\1\"", $result);
    return $result;
}

$result = getPage('http://support.prophpbb.com/');

print_r ($result);

?>

对于某些链接，此代码可以正常工作，但对于正确的链接，它将重复。

从错误的链接，替换为正确的：

<img src="./uploads/support/images/1355955233.png" alt="" title="" />
<img src="http://support.prophpbb.com/./uploads/support/images/1355955233.png" alt="" title="" />

但是正确的链接，被错误的代替：

<img src="http://support.prophpbb.com/styles/subsilverPlus/theme/images/icon_mini_faq.gif" width="12" height="13" alt="*" />
<img src="http://support.prophpbb.com/http://support.prophpbb.com/styles/subsilverPlus/theme/images/icon_mini_faq.gif" width="12" height="13" alt="*" />

有人可以帮我吗？

Answer 1

在preg_replace中尝试此正则表达式

<?php

function getPage($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);

    $result = curl_exec($ch);
    curl_close($ch);

    if (!preg_match('/src="https?:\/\/"/', $result)) {
        $result = preg_replace('/src="(http:\/\/([^\/]+)\/)?([^"]+)"/', "src=\"http://support.prophpbb.com/\\3\"", $result);
    }
    if (!preg_match('/href="https?:\/\/"/', $result)) {
        $result = preg_replace('/href="(http:\/\/([^\/]+)\/)?([^"]+)"/', "href=\"http://support.prophpbb.com/\\3\"", $result);
    }
    return $result;
}

$result = getPage('http://support.prophpbb.com/');

print_r ($result);