using (unset) for multiple parameters

Question

I am using the answer here https://stackoverflow.com/a/27689796/3842368 to strip off several parameters from a url. I thought it was working, until today when I found out that unset() wasn't working if I defined multiple parameters.

My PHP code is:

$url = $_SERVER["REQUEST_URI"];
$x = $url;
$parsed = parse_url($x);
$query = $parsed['query'];
parse_str($query, $params);
unset($params['qdef, qval1']);
$string = http_build_query($params);

$params is producing the following array, using print_r:

Array ( [use_url] => on [zipcode] => Axminster, Devon EX13 5RZ [categories] => Array ( [0] => 2 ) [radius] => 0 [checkboxnational] => 1 [submit] => loading results... [yesq] => y [qdef] => 2 [qval1] => 100.00 [qval2] => 525.00 [seasoning] => 1 [slider-value1] => 0 [slider-value2] => 70 [resultbar] => 25 [sortbar] => distance [lat] => 50.77643440000001 [lng] => -2.9810417 [swlat] => 50.7773526197085 [swlng] => -2.9814507999999478 [nelat] => 50.7800505802915 [nelng] => -2.9749947000000247 [outcode] => EX13 ) 1

so the problem I have is that if I write unset($params['qdef']); then qdef is stripped from the url, but if I write unset($params['qdef, qval1']); then nothing is stripped. I've tried separating them with a comma, enclosing each parameter in '[]', nothing works. I've tried many ways of defining the parameters in the unset() command but nothing works.

Any thoughts?

Public idiocy is nature's way of teaching us not to make the same mistake a second time ;) — Mark Baker
– Mark Baker, Commented Mar 10, 2015 at 0:03

Mark Baker · Accepted Answer · 2015-03-10 00:02:09Z

1

$params['qdef'] and $params['qval1'] are separate elements in the array

use

unset($params['qdef'], $params['qval1']);

to unset them individually

unset($params['qdef, qval1']);

is trying to unset a single element from $params with a key of 'qdef, qval1'

answered Mar 10, 2015 at 0:02

Mark Baker

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