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使用PHP将相对路径转换为绝对URL
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Stack Overflow用户
提问于 2010-12-15 05:34:58
回答 10查看 31.9K关注 0票数 23

如何使用php将相对路径转换为绝对URL?

EN

回答 10

Stack Overflow用户

回答已采纳

发布于 2010-12-15 05:36:54

代码语言:javascript
复制
function rel2abs($rel, $base)
{
    /* return if already absolute URL */
    if (parse_url($rel, PHP_URL_SCHEME) != '') return $rel;

    /* queries and anchors */
    if ($rel[0]=='#' || $rel[0]=='?') return $base.$rel;

    /* parse base URL and convert to local variables:
       $scheme, $host, $path */
    extract(parse_url($base));

    /* remove non-directory element from path */
    $path = preg_replace('#/[^/]*$#', '', $path);

    /* destroy path if relative url points to root */
    if ($rel[0] == '/') $path = '';

    /* dirty absolute URL */
    $abs = "$host$path/$rel";

    /* replace '//' or '/./' or '/foo/../' with '/' */
    $re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#');
    for($n=1; $n>0; $abs=preg_replace($re, '/', $abs, -1, $n)) {}

    /* absolute URL is ready! */
    return $scheme.'://'.$abs;
}
票数 40
EN

Stack Overflow用户

发布于 2014-09-11 11:12:04

我喜欢jordanstephens从链接中提供的代码!我投了赞成票。l0oky给了我灵感,让我确保这个函数是端口、用户名和密码兼容的。我的项目需要它。

代码语言:javascript
复制
function rel2abs( $rel, $base )
{
    /* return if already absolute URL */
    if( parse_url($rel, PHP_URL_SCHEME) != '' )
        return( $rel );

    /* queries and anchors */
    if( $rel[0]=='#' || $rel[0]=='?' )
        return( $base.$rel );

    /* parse base URL and convert to local variables:
       $scheme, $host, $path */
    extract( parse_url($base) );

    /* remove non-directory element from path */
    $path = preg_replace( '#/[^/]*$#', '', $path );

    /* destroy path if relative url points to root */
    if( $rel[0] == '/' )
        $path = '';

    /* dirty absolute URL */
    $abs = '';

    /* do we have a user in our URL? */
    if( isset($user) )
    {
        $abs.= $user;

        /* password too? */
        if( isset($pass) )
            $abs.= ':'.$pass;

        $abs.= '@';
    }

    $abs.= $host;

    /* did somebody sneak in a port? */
    if( isset($port) )
        $abs.= ':'.$port;

    $abs.=$path.'/'.$rel;

    /* replace '//' or '/./' or '/foo/../' with '/' */
    $re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#');
    for( $n=1; $n>0; $abs=preg_replace( $re, '/', $abs, -1, $n ) ) {}

    /* absolute URL is ready! */
    return( $scheme.'://'.$abs );
}
票数 7
EN

Stack Overflow用户

发布于 2015-03-24 01:01:28

添加了保留当前查询的支持。对?page=1等帮助很大。

代码语言:javascript
复制
function rel2abs($rel, $base)
{
    /* return if already absolute URL */
    if (parse_url($rel, PHP_URL_SCHEME) != '')
        return ($rel);

    /* queries and anchors */
    if ($rel[0] == '#' || $rel[0] == '?')
        return ($base . $rel);

    /* parse base URL and convert to local variables: $scheme, $host, $path, $query, $port, $user, $pass */
    extract(parse_url($base));

    /* remove non-directory element from path */
    $path = preg_replace('#/[^/]*$#', '', $path);

    /* destroy path if relative url points to root */
    if ($rel[0] == '/')
        $path = '';

    /* dirty absolute URL */
    $abs = '';

    /* do we have a user in our URL? */
    if (isset($user)) {
        $abs .= $user;

        /* password too? */
        if (isset($pass))
            $abs .= ':' . $pass;

        $abs .= '@';
    }

    $abs .= $host;

    /* did somebody sneak in a port? */
    if (isset($port))
        $abs .= ':' . $port;

    $abs .= $path . '/' . $rel . (isset($query) ? '?' . $query : '');

    /* replace '//' or '/./' or '/foo/../' with '/' */
    $re = ['#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#'];
    for ($n = 1; $n > 0; $abs = preg_replace($re, '/', $abs, -1, $n)) {
    }

    /* absolute URL is ready! */

    return ($scheme . '://' . $abs);
}
票数 5
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接:

https://stackoverflow.com/questions/4444475

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