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PHP：相対URLを解決する方法

相対URLを指定し、ベースが絶対URLを返す関数が必要です。私はそれをさまざまな方法で行う多くの関数を検索して見つけました。

resolve("../abc.png", "http://example.com/path/thing?foo=bar")
# returns http://example.com/abc.png

正規の方法はありますか？

このサイトでは、pythonとc＃の優れた例を見て、PHPソリューションを取得しましょう。

phpurlrelative-pathresolveurlrelative-url
26
Paul Tarjan

おそらくこの記事が役立つでしょうか？

http://nashruddin.com/PHP_Script_for_Converting_Relative_to_Absolute_URL

編集：便宜上以下のコードを複製

<?php
    function rel2abs($rel, $base)
    {
        /* return if already absolute URL */
        if (parse_url($rel, PHP_URL_SCHEME) != '' || substr($rel, 0, 2) == '//') 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;
    }
?>
8
Amber

Pecl-httpをお持ちの場合は、 http://php.net/manual/en/function.http-build-url.php を使用できます。

<?php
$url_parts = parse_url($relative_url);
$absolute = http_build_url($source_url, $url_parts, HTTP_URL_JOIN_PATH);

例：

<?php
function getAbsoluteURL($source_url, $relative_url)
{
    $url_parts = parse_url($relative_url);
    return http_build_url($source_url, $url_parts, HTTP_URL_JOIN_PATH);
}
echo getAbsoluteURL('http://foo.tw/a/b/c', '../pic.jpg') . "\n";
// http://foo.tw/a/pic.jpg

echo getAbsoluteURL('http://foo.tw/a/b/c/', '../pic.jpg') . "\n";
// http://foo.tw/a/b/pic.jpg

echo getAbsoluteURL('http://foo.tw/a/b/c/', 'http://bar.tw/a.js') . "\n";
// http://bar.tw/a.js

echo getAbsoluteURL('http://foo.tw/a/b/c/', '/robots.txt') . "\n";
// http://foo.tw/robots.txt
5
Ronny Wang

pguardiarioのコメントでリンクされているページにすでにリンクされている他のツール： http://publicmind.in/blog/urltoabsolute/ 、 https://github.com/monkeysuffrage/phpuri =。

そして私はコメントから他のツールを見つけました http://nadeausoftware.com/articles/2008/05/php_tip_how_convert_relative_url_absolute_url ：

require_once 'Net/URL2.php';
$base = new Net_URL2('http://example.org/foo.html');
$absolute = (string)$base->resolve('relative.html#bar');
1
qdinar

プロトコル相対URLを処理できる別の関数は次のとおりです

<?php
function getAbsoluteURL($to, $from = null) {
    $arTarget = parse_url($to);
    $arSource = parse_url($from);
    $targetPath = isset($arTarget['path']) ? $arTarget['path'] : '';

    if (isset($arTarget['Host'])) {
        if (!isset($arTarget['scheme'])) {
            $proto = isset($arSource['scheme']) ? "{$arSource['scheme']}://" : '//';
        } else {
            $proto = "{$arTarget['scheme']}://";
        }
        $baseUrl = "{$proto}{$arTarget['Host']}" . (isset($arTarget['port']) ? ":{$arTarget['port']}" : '');
    } else {
        if (isset($arSource['Host'])) {
            $proto = isset($arSource['scheme']) ? "{$arSource['scheme']}://" : '//';
            $baseUrl = "{$proto}{$arSource['Host']}" . (isset($arSource['port']) ? ":{$arSource['port']}" : '');
        } else {
            $baseUrl = '';
        }
        $arPath = [];

        if ((empty($targetPath) || $targetPath[0] !== '/') && !empty($arSource['path'])) {
            $arTargetPath = explode('/', $targetPath);
            if (empty($arSource['path'])) {
                $arPath = [];
            } else {
                $arPath = explode('/', $arSource['path']);
                array_pop($arPath);
            }
            $len = count($arPath);
            foreach ($arTargetPath as $idx => $component) {
                if ($component === '..') {
                    if ($len > 1) {
                        $len--;
                        array_pop($arPath);
                    }
                } elseif ($component !== '.') {
                    $len++;
                    array_Push($arPath, $component);
                }
            }
            $targetPath = implode('/', $arPath);
        }
    }

    return $baseUrl . $targetPath;
}

// SAMPLES
// Absolute path => https://www.google.com/doubleclick/
echo getAbsoluteURL('/doubleclick/', 'https://www.google.com/doubleclick/insights/') . "\n";
// Relative path 1 => https://www.google.com/doubleclick/studio
echo getAbsoluteURL('../studio', 'https://www.google.com/doubleclick/insights/') . "\n";
// Relative path 2 => https://www.google.com/doubleclick/insights/case-studies.html
echo getAbsoluteURL('./case-studies.html', 'https://www.google.com/doubleclick/insights/') . "\n";
// Relative path 3 => https://www.google.com/doubleclick/insights/case-studies.html
echo getAbsoluteURL('case-studies.html', 'https://www.google.com/doubleclick/insights/') . "\n";
// Protocol relative url => https://www.google.com/doubleclick/
echo getAbsoluteURL('//www.google.com/doubleclick/', 'https://www.google.com/doubleclick/insights/') . "\n";
// Empty path => https://www.google.com/doubleclick/insights/
echo getAbsoluteURL('', 'https://www.google.com/doubleclick/insights/') . "\n";
// Different url => http://www.yahoo.com/
echo getAbsoluteURL('http://www.yahoo.com/', 'https://www.google.com') . "\n";
1
Joyce Babu

すでに使用している場合の別の解決策 GuzzleHttp 。

このソリューションは、GuzzleHttp\Clientの内部メソッドに基づいています。

use GuzzleHttp\Psr7;

function resolve(string $uri, ?string $base_uri): string
{
    $uri = Psr7\uri_for($uri);

    if (isset($base_uri)) {
        $uri = Psr7\UriResolver::resolve(Psr7\uri_for($base_uri), $uri);
    }

    // optional: set default scheme if missing
    $uri = $uri->getScheme() === '' && $uri->getHost() !== '' ? $uri->withScheme('http') : $uri;

    return (string) $uri;
}
1
Johannes Buchholz
function absoluteUri($Path, $URI)
{   # Requires PHP4 or better.
    $URL = parse_url($URI);
    $Str = "{$URL['scheme']}://";

    if (isset($URL['user']) || isset($URL['pass']))
        $Str .= "{$URL['user']}:{$URL['pass']}@";

    $Str .= $URL['Host'];

    if (isset($URL['port']))
        $Str .= ":{$URL['port']}";

    $Str .= realpath($URL['path'] . $Path); # This part might have an issue on windows boxes.

    if (isset($URL['query']))
        $Str .= "?{$URL['query']}";

    if (isset($URL['fragment']))
        $Str .= "#{$URL['fragment']}";

    return $Str;
}

absoluteUri("../abc.png", "http://example.com/path/thing?foo=bar");
# Should return "http://example.com/abc.png?foo=bar" on Linux boxes.
0
Mark Tomlin