替换给定 URL 中的查询字符串值的更好方法 - better way to replace query string value in a given url

好的.. 所以基本上，假设我们有一个链接：

$url = "http://www.site.com/index.php?sub=Mawson&state=QLD&cat=4&page=2&sort=z";

基本上，我需要创建一个函数，它替换 URL 中的每个内容，例如：

<a href="<?=$url;?>?sort=a">Sort by A-Z</a>
<a href="<?=$url;?>?sort=z">Sort by Z-A</a>

或者，再举一个例子：

<a href="<?=$url;?>?cat=1">Category 1</a>
<a href="<?=$url;?>?cat=2">Category 2</a>

或者，另一个例子：

<a href="<?=$url;?>?page=1">1</a>
<a href="<?=$url;?>?page=2">2</a>
<a href="<?=$url;?>?page=3">3</a>
<a href="<?=$url;?>?page=4">4</a>

所以基本上，我们需要一个函数来替换 URL 中的特定$_GET，这样我们就不会得到重复，例如：?page=2&page=3

话虽如此，它需要很聪明，所以它知道参数的开头是?还是&

我们

还需要它是智能的，这样我们才能拥有这样的 URL：

<a href="<?=$url;?>page=3">3</a> (without the ? - so it will detect automatically wether to use an `&` or a `?`

我不介意为某些 $_GET 参数的每个preg_replace创建不同的变量，但我正在寻找执行此操作的最佳方法。

谢谢。

这样的事情怎么样？

function merge_querystring($url = null,$query = null,$recursive = false)
{
  // $url = 'http://www.google.com.au?q=apple&type=keyword';
  // $query = '?q=banana';
  // if there's a URL missing or no query string, return
  if($url == null)
    return false;
  if($query == null)
    return $url;
  // split the url into it's components
  $url_components = parse_url($url);
  // if we have the query string but no query on the original url
  // just return the URL + query string
  if(empty($url_components['query']))
    return $url.'?'.ltrim($query,'?');
  // turn the url's query string into an array
  parse_str($url_components['query'],$original_query_string);
  // turn the query string into an array
  parse_str(parse_url($query,PHP_URL_QUERY),$merged_query_string);
  // merge the query string
  if($recursive == true)
    $merged_result = array_merge_recursive($original_query_string,$merged_query_string);
  else
    $merged_result = array_merge($original_query_string,$merged_query_string);
  // Find the original query string in the URL and replace it with the new one
  return str_replace($url_components['query'],http_build_query($merged_result),$url);
}

用法。。。

<a href="<?=merge_querystring($url,'?page=1');?>">Page 1</a>
<a href="<?=merge_querystring($url,'?page=2');?>">Page 2</a>

好吧，我遇到了同样的问题，找到了这个问题，最后，我更喜欢我自己的方法。也许它有缺陷，那么请告诉我它们是什么。我的解决方案是：

$query=$_GET;
$query['YOUR_NAME']=$YOUR_VAL;
$url=$_SERVER['PHP_SELF']. '?' .  http_build_query($query);

希望对您有所帮助。

<?php
function change_query ( $url , $array ) {
    $url_decomposition = parse_url ($url);
    $cut_url = explode('?', $url);
    $queries = array_key_exists('query',$url_decomposition)?$url_decomposition['query']:false;
    $queries_array = array ();
    if ($queries) {
        $cut_queries   = explode('&', $queries);
        foreach ($cut_queries as $k => $v) {
            if ($v)
            {
                $tmp = explode('=', $v);
                if (sizeof($tmp ) < 2) $tmp[1] = true;
                $queries_array[$tmp[0]] = urldecode($tmp[1]);
            }
        }
    }
    $newQueries = array_merge($queries_array,$array);
    return $cut_url[0].'?'.http_build_query($newQueries);
}
?>

像这样使用：

<?php
    echo change_query($myUrl, array('queryKey'=>'queryValue'));
?>

我今天早上这样做，它似乎在所有情况下都有效。您可以使用数组;)更改/添加多个查询

function replaceQueryParams($url, $params)
{
    $query = parse_url($url, PHP_URL_QUERY);
    parse_str($query, $oldParams);
    if (empty($oldParams)) {
        return rtrim($url, '?') . '?' . http_build_query($params);
    }
    $params = array_merge($oldParams, $params);
    return preg_replace('#'?.*#', '?' . http_build_query($params), $url);
}

$url示例：

http://example.com
http://example.com/
http://example.com/page
http://example.com/page？
http://example.com/page?foo=bar
http://example.com/page?foo2=bar2
http://example.com/page?foo=bar&foo2=bar2

$params示例：

[
   'foo' => 'not-bar',
]

注意：它无法理解带有锚点(哈希(的网址，例如http://example.com/page?foo=bar#section1

如果我

没看错，我可能不会。您知道要在 url 字符串中替换哪个 GET？这可能很草率，但是...

$url_pieces = explode( '?', $url );
$var_string = $url_pieces[1].'&';
$new_url = $url_pieces[0].preg_replace( '/varName'=value/', 'newVarName=newValue', $var_string );

这是我的看法，祝你好运。

我不知道

这是否是您要完成的，但无论如何它都在这里：

<?php
    function mergeMe($url, $assign) {
        list($var,$val) = explode("=",$assign);
        //there's no var defined
        if(!strpos($url,"?")) {
            $res = "$url?$assign";
        } else {
            list($base,$vars) = explode("?",$url);
            //if the vars dont include the one given
            if(!strpos($vars,$var)) {
                $res = "$url&$assign";
            } else {
                $res = preg_replace("/$var=[a-zA-Z0-9_]*(&|$)/",$assign."&",$url);
                $res = preg_replace("/&$/","",$res); //remove possible & at the end
            }
        }
        //just to show the difference, should be "return $res;" instead
        return "$url <strong>($assign)</strong><br>$res<hr>";
    }
    //example
    $url1 = "http://example.com";
    $url2 = "http://example.com?sort=a";
    $url3 = "http://example.com?sort=a&page=0";
    $url4 = "http://example.com?sort=a&page=0&more=no";
    echo mergeMe($url1,"page=4");
    echo mergeMe($url2,"page=4");
    echo mergeMe($url3,"page=4");
    echo mergeMe($url4,"page=4");
?>

改进了

Scuzzy 2013 函数清理 URL 查询字符串的最后一部分。

// merge the query string
// array_filter removes empty query array
    if ($recursive == true) {
        $merged_result = array_filter(array_merge_recursive($original_query_string, $merged_query_string));
    } else {
        $merged_result = array_filter(array_merge($original_query_string, $merged_query_string));
    }
    // Find the original query string in the URL and replace it with the new one
    $new_url = str_replace($url_components['query'], http_build_query($merged_result), $url);
    // If the last query string removed then remove ? from url 
    if(substr($new_url, -1) == '?') {
       return rtrim($new_url,'?');
    }
    return $new_url;

<?php
//current url: http://localhost/arters?sub=Mawson&state=QLD&cat=4&page=2&sort=a
/**
* URL Parameters : Replace query string value in a url
*
* @version 2023.02.21 Jwu
*
* @param string $queryKey Variable name 
* @param string|null $queryValue Property value
* 
* @return string
*/
function changeQueryString($queryKey, $queryValue){
    $queryStr = $_SERVER['QUERY_STRING'];
    parse_str($queryStr, $output);
    if($queryValue == null){
        unset($output[$queryKey]);
    }else{
        $output[$queryKey] = $queryValue;
    }
    $actualLink = 'http' . (isset($_SERVER['HTTPS']) ? 's' : '') . '://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
    return $actualLink . '?' . http_build_query($output);
}

用法：

<a href="<?php echo changeQueryString("sort",'z');?>">sort by z</a>

http://localhost/arters?sub=Mawson&state=QLD&cat=4&page=2&sort=z

<a href="<?php echo changeQueryString("page",'5');?>">Page 5</a>

http://localhost/arters?sub=Mawson&state=QLD&cat=4&page=5&sort=a

我的简短易读方式：

function replaceGetParameters(string $url, array $newGetParameters): string {
    $url_parts = parse_url($url);
    $query = [];
    if (isset($url_parts['query'])) {
      parse_str($url_parts['query'], $query);
    }
    $query = array_merge($query, $newGetParameters);
    $url_parts['query'] = http_build_query($query);
    return $url_parts['scheme'] . '://' . $url_parts['host'] . $url_parts['path'] . '?' . $url_parts['query'];
  }