将查询字符串附加到任何形式的URL

时间:2011-03-07 04:01:52

标签: php

我要求用户在文本框中输入一个URL,并需要在其中附加一个查询字符串。

网址的可能值可以是:

  1. http://www.example.com

  2. http://www.example.com/a/

  3. http://www.example.com/a/?q1=one

  4. http://www.example.com/a.html

  5. http://www.example.com/a.html?q1=one

  6. 现在我需要像“q2 = two”一样添加查询字符串,这样输出就像:

    1. http://www.example.com/?q2=two

    2. http://www.example.com/a/?q2=two

    3. http://www.example.com/a/?q1=one&q2=two

    4. http://www.example.com/a.html?q2=two

    5. http://www.example.com/a.html?q1=one&q2=two

    6. 如何使用PHP实现以下目标?

8 个答案:

答案 0 :(得分:34)

<?php

$urls = array(
         'http://www.example.com',
         'http://www.example.com/a/',
         'http://www.example.com/a/?q1=one',
         'http://www.example.com/a.html',
         'http://www.example.com/a.html?q1=one'
        );

$query = 'q2=two';

foreach($urls as &$url) {
   $parsedUrl = parse_url($url);
   if ($parsedUrl['path'] == null) {
      $url .= '/';
   }
   $separator = ($parsedUrl['query'] == NULL) ? '?' : '&';
   $url .= $separator . $query;
}

var_dump($urls);

输出

array(5) {
  [0]=>
  string(29) "http://www.example.com/?q2=two"
  [1]=>
  string(32) "http://www.example.com/a/?q2=two"
  [2]=>
  string(39) "http://www.example.com/a/?q1=one&q2=two"
  [3]=>
  string(36) "http://www.example.com/a.html?q2=two"
  [4]=>
  &string(43) "http://www.example.com/a.html?q1=one&q2=two"
}

CodePad

答案 1 :(得分:13)

$ url是您的网址。使用strpos功能

if(strpos($url,'?') !== false) {
   $url .= '&q2=two';
} else {
   $url .= '?q2=two';
}

答案 2 :(得分:7)

我知道这已经过时了,但我改进了alex's answer来解释&#34;#&#34;字符串的一部分。

$urls = array(
    'http://www.example.com',
    'http://www.example.com/a/#something',
    'http://www.example.com/a/?q1=one#soe',
    'http://www.example.com/a.html',
    'http://www.example.com/a.html?q1=one'
    );

$query = 'q2=two';

foreach($urls as &$url) {
    $pound = "";
    $poundPos = -1;

    //Is there a #?
    if ( ( $poundPos = strpos( $url, "#" ) ) !== false )
    {
        $pound = substr( $url, $poundPos );
        $url = substr( $url, 0, $poundPos );
    }

    $separator = (parse_url($url, PHP_URL_QUERY) == NULL) ? '?' : '&';
    $url .= $separator . $query . $pound;
}

var_dump($urls);

答案 3 :(得分:1)

如果您可以安装pecl_http,那么这是一个非常优雅的解决方案。它可以让您检查是否覆盖了他们可能设置的get变量。

$urlComps = parse_url($url);

// Get the current query string
$queryString = isset($urlComps['query']) ? $urlComps['query'] : '';

// Turn it into an array for easy manipulation
parse_str($queryString, $queryVars);

// Make changes to the query vars
$queryVars['q2'] = 'two';

// Empty paths return relative URLs.
$urlComps['path'] = isset($urlComps['path']) ? $urlComps['path'] : '/';

// Make the pecl_http call
$newURL = http_build_url($urlComps, array('query' => http_build_query($queryVars)));

注意:如果你不能安装pecl_http,那么唯一的函数是带有函数http_build_url的最后一个函数。您可以相当轻松地构建自己的函数来重建其组件中的URL ...

答案 4 :(得分:1)

增强@ alex对帐户无限附加查询字符串

的回答
/* Append QueryString to current URL */
function querystring_append($query) {
    $url = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
    $parsedUrl = parse_url($url);
    if ($parsedUrl['path'] == null) {
        $url .= '/';
    }
    $separator = ($parsedUrl['query'] == NULL) ? '?' : '&';
    if(!substr_count($url,$query)) $url .= $separator . $query;
    return $url;
}

用法:

<?=querystring_append("action=logout") ?>

答案 5 :(得分:1)

这应该是比较棘手的。 @alex答案很好,但是它不支持URL片段,也不处理重复的值。我只是为这种情况提供了一个程序包。参见https://github.com/Nyholm/append_query_string

$url = 'https://nyholm.tech?example=yes';
$queryString = http_build_query(['foo'=>'bar']);

$result = append_query_string($url, $queryString);

echo $result;
// https://nyholm.tech?example=yes&foo=bar

您还可以定义如何处理重复项。您可以决定:

  • 忽略重复值
  • 替换
  • 跳过

答案 6 :(得分:0)

这是我使用的功能:

/**
 * @param string $url
 * @param $query string|array
 * @return string
 */
public function appendQueryStringToURL(string $url, $query): string
{
    // the query is empty, return the original url straightaway
    if (empty($query)) {
        return $url;
    }

    $parsedUrl = parse_url($url);
    if (empty($parsedUrl['path'])) {
        $url .= '/';
    }

    // if the query is array convert it to string
    $queryString = is_array($query) ? http_build_query($query) : $query;

    // check if there is already any query string in the URL
    if (empty($parsedUrl['query'])) {
        // remove duplications
        parse_str($queryString, $queryStringArray);
        $url .= '?' . http_build_query($queryStringArray);
    } else {
        $queryString = $parsedUrl['query'] . '&' . $queryString;

        // remove duplications
        parse_str($queryString, $queryStringArray);

        // place the updated query in the original query position
        $url = substr_replace($url, http_build_query($queryStringArray), strpos($url, $parsedUrl['query']), strlen($parsedUrl['query']));
    }

    return $url;
}

它接受query作为stringarray。它还处理URL中的#并自动删除重复的查询字符串。这也是测试。请使用项目中正确的CLASS_THAT_CONTAINS_appendQueryStringToURL替换class

public function testAppendQueryStringToURL()
{
    $helper = new CLASS_THAT_CONTAINS_appendQueryStringToURL();

    $inputsOutputs = [
        [
            'i' => 'http://www.example.com',
            'q' => 'q1=1',
            'o' => 'http://www.example.com/?q1=1'
        ],
        [
            'i' => 'http://www.example.com',
            'q' => 'q1=1&q2=2',
            'o' => 'http://www.example.com/?q1=1&q2=2'
        ],
        [
            'i' => 'http://www.example.com/a/',
            'q' => 'q1=1',
            'o' => 'http://www.example.com/a/?q1=1'
        ],
        [
            'i' => 'http://www.example.com/a.html',
            'q' => 'q1=1',
            'o' => 'http://www.example.com/a.html?q1=1'
        ],
        [
            'i' => 'http://www.example.com/a/?q2=2',
            'q' => 'q1=1',
            'o' => 'http://www.example.com/a/?q2=2&q1=1'
        ],
        [
            'i' => 'http://www.example.com/a.html?q2=two',
            'q' => 'q1=1',
            'o' => 'http://www.example.com/a.html?q2=two&q1=1'
        ],
        [
            'i' => 'http://www.example.com/a.html?q1=1&q2=2',
            'q' => 'q1=1',
            'o' => 'http://www.example.com/a.html?q1=1&q2=2'
        ],
        // overwrite the existing
        [
            'i' => 'http://www.example.com/a.html?q1=1&q2=2',
            'q' => 'q1=3',
            'o' => 'http://www.example.com/a.html?q1=3&q2=2'
        ],
        [
            'i' => 'http://www.example.com/a/#something',
            'q' => 'q1=1',
            'o' => 'http://www.example.com/a/#something?q1=1'
        ],
        [
            'i' => 'http://www.example.com/a/?q2=2#soe',
            'q' => 'q1=1',
            'o' => 'http://www.example.com/a/?q2=2&q1=1#soe'
        ],
        [
            'i' => 'http://www.example.com',
            'q' => ['q1' => 1],
            'o' => 'http://www.example.com/?q1=1'
        ],
        [
            'i' => 'http://www.example.com',
            'q' => ['q1' => 1, 'q2' => 2],
            'o' => 'http://www.example.com/?q1=1&q2=2'
        ],
        [
            'i' => 'http://www.example.com/a/',
            'q' => ['q1' => 1],
            'o' => 'http://www.example.com/a/?q1=1'
        ],
        [
            'i' => 'http://www.example.com/a.html',
            'q' => ['q1' => 1],
            'o' => 'http://www.example.com/a.html?q1=1'
        ],
        [
            'i' => 'http://www.example.com/a/?q2=2',
            'q' => ['q1' => 1],
            'o' => 'http://www.example.com/a/?q2=2&q1=1'
        ],
        [
            'i' => 'http://www.example.com/a.html?q2=two',
            'q' => ['q1' => 1],
            'o' => 'http://www.example.com/a.html?q2=two&q1=1'
        ],
        [
            'i' => 'http://www.example.com/a.html?q1=1&q2=2',
            'q' => ['q1' => 1],
            'o' => 'http://www.example.com/a.html?q1=1&q2=2'
        ],
        [
            'i' => 'http://www.example.com/a.html?q1=1&q2=2',
            'q' => ['q1' => 3],
            'o' => 'http://www.example.com/a.html?q1=3&q2=2'
        ],
        [
            'i' => 'http://www.example.com/a/#something',
            'q' => ['q1' => 1],
            'o' => 'http://www.example.com/a/#something?q1=1'
        ],
        [
            'i' => 'http://www.example.com/a/?q2=2#soe',
            'q' => ['q1' => 1],
            'o' => 'http://www.example.com/a/?q2=2&q1=1#soe'
        ],
    ];

    foreach ($inputsOutputs as $inputOutput) {
        $this->assertEquals($inputOutput['o'], $helper->appendQueryStringToURL($inputOutput['i'], $inputOutput['q']));
    }
}

答案 7 :(得分:0)

顺便说一句,如果有人(像我一样)在 WordPress 中实现了这个功能,那么一个函数已经存在:add_query_arg()

add_query_arg( 'key', 'value', 'http://example.com' );

更多示例请参见法典 - https://developer.wordpress.org/reference/functions/add_query_arg/