要从请求URI中删除查询字符串，请将查询字符串替换为空字符串:

function request_uri_without_query() {
    $result = $_SERVER['REQUEST_URI'];
    $query = $_SERVER['QUERY_STRING'];
    if(!empty($query)) {
        $result = str_replace('?' . $query, '', $result);
    }
    return $result;
}

你可以使用strtok在第一次出现之前获取字符串?

$url = strtok($_SERVER["REQUEST_URI"], '?');

Strtok()代表了直接提取?在查询字符串中。explosion()不太直接，因为它必须生成一个可能包含两个元素的数组，必须通过该数组访问第一个元素。

其他一些技术可能会在查询字符串丢失或url中其他/非预期的子字符串发生变化时中断——这些技术应该避免。

一个示范:

$urls = [
    'www.example.com/myurl.html?unwantedthngs#hastag',
    'www.example.com/myurl.html'
];

foreach ($urls as $url) {
    var_export(['strtok: ', strtok($url, '?')]);
    echo "\n";
    var_export(['strstr/true: ', strstr($url, '?', true)]); // not reliable
    echo "\n";
    var_export(['explode/2: ', explode('?', $url, 2)[0]]);  // limit allows func to stop searching after first encounter
    echo "\n";
    var_export(['substr/strrpos: ', substr($url, 0, strrpos( $url, "?"))]);  // not reliable; still not with strpos()
    echo "\n---\n";
}

输出:

array (
  0 => 'strtok: ',
  1 => 'www.example.com/myurl.html',
)
array (
  0 => 'strstr/true: ',
  1 => 'www.example.com/myurl.html',
)
array (
  0 => 'explode/2: ',
  1 => 'www.example.com/myurl.html',
)
array (
  0 => 'substr/strrpos: ',
  1 => 'www.example.com/myurl.html',
)
---
array (
  0 => 'strtok: ',
  1 => 'www.example.com/myurl.html',
)
array (
  0 => 'strstr/true: ',
  1 => false,                       // bad news
)
array (
  0 => 'explode/2: ',
  1 => 'www.example.com/myurl.html',
)
array (
  0 => 'substr/strrpos: ',
  1 => '',                          // bad news
)
---

要从请求URI中删除查询字符串，请将查询字符串替换为空字符串:

function request_uri_without_query() {
    $result = $_SERVER['REQUEST_URI'];
    $query = $_SERVER['QUERY_STRING'];
    if(!empty($query)) {
        $result = str_replace('?' . $query, '', $result);
    }
    return $result;
}

如果你想获取请求路径(更多信息):

echo parse_url($_SERVER["REQUEST_URI"])['path']

如果你想删除查询和(也可能是片段):

function strposa($haystack, $needles=array(), $offset=0) {
        $chr = array();
        foreach($needles as $needle) {
                $res = strpos($haystack, $needle, $offset);
                if ($res !== false) $chr[$needle] = $res;
        }
        if(empty($chr)) return false;
        return min($chr);
}
$i = strposa($_SERVER["REQUEST_URI"], ['#', '?']);
echo strrpos($_SERVER["REQUEST_URI"], 0, $i);

假设你仍然想要在没有查询参数的情况下获得URL(如果它们没有设置)，只需使用一个简略的if语句来检查strpos:

$request_uri = strpos( $_SERVER['REQUEST_URI'], '?' ) !== false ? strtok( $_SERVER["REQUEST_URI"], '?' ) : $_SERVER['REQUEST_URI'];

因为我同时处理相对url和绝对url，所以我更新了veritas的解决方案，如下所示。 你可以在这里试试:https://ideone.com/PvpZ4J

function removeQueryStringFromUrl($url) {
    if (substr($url,0,4) == "http") {
        $urlPartsArray = parse_url($url);
        $outputUrl = $urlPartsArray['scheme'] . '://' . $urlPartsArray['host'] . ( isset($urlPartsArray['path']) ? $urlPartsArray['path'] : '' );
    } else {
        $URLexploded = explode("?", $url, 2);
        $outputUrl = $URLexploded[0];
    }
    return $outputUrl;
}