append query string to any form of URL

<?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);

Output

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.

$url is your URL. Use strpos function

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

I know this is old, but I improved alex's answer to account for the "#" part of the string.

$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);

This is the function I use:

/**
 * @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;
}

It accepts query as string or array. Also it handles # in URL and removes the duplicated query strings automatically. Here is the test as well. Please replace CLASS_THAT_CONTAINS_appendQueryStringToURL with the correct class in your project:

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']));
    }
}

append query string to any form of URL

Output

Tags:

Php

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