build_url (parse_urlの逆)

PECLのhttp_build_urlとの互換性はありません。

関数定義

function build_url(array $elements) {
    $e = $elements;
    return
        (isset($e['host']) ? (
            (isset($e['scheme']) ? "$e[scheme]://" : '//') .
            (isset($e['user']) ? $e['user'] . (isset($e['pass']) ? ":$e[pass]" : '') . '@' : '') .
            $e['host'] .
            (isset($e['port']) ? ":$e[port]" : '')
        ) : '') .
        (isset($e['path']) ? $e['path'] : '/') .
        (isset($e['query']) ? '?' . (is_array($e['query']) ? http_build_query($e['query'], '', '&') : $e['query']) : '') .
        (isset($e['fragment']) ? "#$e[fragment]" : '')
    ;
}

例 (コード)

<?php

$patterns = [
    ['host' => 'example.com'],
    ['scheme' => 'https', 'host' => 'example.com'],
    ['scheme' => 'http', 'host' => 'example.com', 'port' => 8080, 'path' => '/x/y/z'],
    ['scheme' => 'http', 'host' => 'example.com', 'port' => 8080, 'user' => 'anonymous', 'query' => 'a=b&c=d', 'fragment' => 'xyz'],
    ['scheme' => 'http', 'host' => 'example.com', 'user' => 'root', 'pass' => 'stupid', 'path' => '/x/y/z', 'query' => ['a' => 'b', 'c' => 'd']],
    ['path' => '/x/y/z', 'query' => 'a=b&c=d'],
];

foreach ($patterns as $pattern) {
    echo json_encode($pattern, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n/* " . build_url($pattern) . " */\n\n";
}

例 (結果)

{
    "host": "example.com"
}
/* //example.com/ */

{
    "scheme": "https",
    "host": "example.com"
}
/* https://example.com/ */

{
    "scheme": "http",
    "host": "example.com",
    "port": 8080,
    "path": "/x/y/z"
}
/* http://example.com:8080/x/y/z */

{
    "scheme": "http",
    "host": "example.com",
    "port": 8080,
    "user": "anonymous",
    "query": "a=b&c=d",
    "fragment": "xyz"
}
/* http://[e-mail]:8080/?a=b&c=d#xyz */

{
    "scheme": "http",
    "host": "example.com",
    "user": "root",
    "pass": "stupid",
    "path": "/x/y/z",
    "query": {
        "a": "b",
        "c": "d"
    }
}
/* http://root:[e-mail]/x/y/z?a=b&c=d */

{
    "path": "/x/y/z",
    "query": "a=b&c=d"
}
/* /x/y/z?a=b&c=d */