php - Link with GET parameter -

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in link can append parameters. if want add new parameter url has one.

example: old: example.php?hi=hello new: example.php?hi=hello&hello=hi

is there other way of doing way:

echo '<a href="'. $_server['request_uri'].'&hello=hi">';

the caveat detecting whether or not question mark exists or not. if doesn't, you'll need add it. quick , dirty way strpos:

if (strpos($_server['request_uri'], '?') === false) {     $qspart = '?'; } else {     $qspart = '&'; }  $oldurl = $_server['request_uri']; echo '<a href="' . $oldurl . $qspart . 'hello=hi">';

a more robust method breaking down request_uri , rebuilding after inspection using parse_url , http_build_query may beyond scope.


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