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support optional GET parameters for end_session_endpoint #496

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support optional GET parameters for end_session_endpoint #496

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6 changes: 5 additions & 1 deletion src/OpenIDConnectClient.php
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Original file line number Diff line number Diff line change
Expand Up @@ -427,12 +427,13 @@ public function authenticate(): bool
*
* @param string $idToken ID token (obtained at login)
* @param string|null $redirect URL to which the RP is requesting that the End-User's User Agent
* @param array $params Optional GET parameters to end-session endpoint
* be redirected after a logout has been performed. The value MUST have been previously
* registered with the OP. Value can be null.
*
* @throws OpenIDConnectClientException
*/
public function signOut(string $idToken, $redirect) {
public function signOut(string $idToken, $redirect, array $params = []) {
$sign_out_endpoint = $this->getProviderConfigValue('end_session_endpoint');

if($redirect === null){
Expand All @@ -444,6 +445,9 @@ public function signOut(string $idToken, $redirect) {
'post_logout_redirect_uri' => $redirect];
}

if($params)
$signout_params = array_merge($signout_params, $params);

$sign_out_endpoint .= (strpos($sign_out_endpoint, '?') === false ? '?' : '&') . http_build_query( $signout_params, '', '&', $this->encType);
$this->redirect($sign_out_endpoint);
}
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