spelling: existence

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

src/Core/Worker.php

@@ -362,7 +362,7 @@ class Worker
 			return false;
 		}
 
-		// Check for existance and validity of the include file
+		// Check for existence and validity of the include file
 		$include = $argv[0];
 
 		if (method_exists(sprintf('Friendica\Worker\%s', $include), 'execute')) {

src/Model/GServer.php

@@ -92,7 +92,7 @@ class GServer
 	const DETECT_NODEINFO_210 = 103;
 
 	/**
-	 * Check for the existance of a server and adds it in the background if not existant
+	 * Check for the existence of a server and adds it in the background if not existant
 	 *
 	 * @param string $url
 	 * @param boolean $only_nodeinfo

src/Protocol/Diaspora.php

@@ -2204,7 +2204,7 @@ class Diaspora
 		$author = WebFingerUri::fromString($author_handle);
 
 		// the current protocol version doesn't know these fields
-		// That means that we will assume their existance
+		// That means that we will assume their existence
 		if (isset($data->following)) {
 			$following = (XML::unescape($data->following) == 'true');
 		} else {

src/Security/ExAuth.php

@@ -153,7 +153,7 @@ class ExAuth
 			if (is_array($aCommand)) {
 				switch ($aCommand[0]) {
 					case 'isuser':
-						// Check the existance of a given username
+						// Check the existence of a given username
 						$this->isUser($aCommand);
 						break;
 					case 'auth':
@@ -225,7 +225,7 @@ class ExAuth
 	}
 
 	/**
-	 * Check remote user existance via HTTP(S)
+	 * Check remote user existence via HTTP(S)
 	 *
 	 * @param string  $host The hostname
 	 * @param string  $user Username