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  1. <?php
  2. //-- usage
  3.  
  4. $_SERVER['REQUEST_URI'] = 'foo.com/blah?a=1&b=2';
  5. function get_link( $my_params )
  6. {   
  7.     $param_querystring = "";
  8.     $http_host = $_SERVER['HTTP_HOST'];
  9.  
  10.     //-- get the part of the url before the querystring, if applicable
  11.     $url = explode( '?', $_SERVER['REQUEST_URI'] );
  12.  
  13.     $request_uri = $url[0];
  14.     $querystring = $url[1];
  15.  
  16.     foreach ( $my_params as $param_key => $param_value )
  17.     {
  18.         $param_querystring .= $param_key . '=' . $param_value;
  19.     }
  20.  
  21.     if ( empty( $querystring ) )
  22.     {
  23.         //-- generates foo.com/blah?x=1&y=2&z=string if no
  24.         //-- querystring was present
  25.         $link = $request_uri . '?' . $param_querystring;
  26.     }
  27.     else
  28.     {
  29.  
  30.         //-- generates foo.com/blah?a=1&b=2&x=1&y=2&z=string if a=1&b=2 
  31.         //-- querystring was already present.
  32.         $link = $request_uri . $querystring . '&' . $param_querystring;
  33.     }
  34.  
  35.     return $link;
  36. }
  37. function assertEquals($a, $b) {
  38. 	if ($a === $b)
  39. 		return true;
  40. 	echo "Failed assertion; got: $a\n";
  41. 	echo "             expected: $b\n";
  42. }
  43. assertEquals(get_link(array('x' => 1, 'y' => 2, 'z' => 'string')),
  44. 			 'foo.com/blah?a=1&b=2&x=1&y=2&z=string');
Success #stdin #stdout #stderr 0.01s 20520KB
comments (?)
stdin 
Standard input is empty
stdout 
Failed assertion; got: foo.com/blaha=1&b=2&x=1y=2z=string
             expected: foo.com/blah?a=1&b=2&x=1&y=2&z=string
stderr 
PHP Notice:  Undefined index: HTTP_HOST in /home/wCWjDs/prog.php on line 8
https://ideone.com/XmQmad
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
secret

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