Simple JSON login function

json-check.php

<?php

$files = array();
$login_nick = null;
$login_pass = null;

//* loop all user files in users/ with file ending .json
foreach(glob('users/*.json') as $file) :
	
	//* put json file contents into the users array
  	$users[] = json_decode(file_get_contents($file));

endforeach;

//* Get nicks from user files
foreach($users as $user) :

	//* Put nicks in array
	$nicks[] = $user->user_nick;	

endforeach;

//* Check if user exists
if( in_array( $nick_login, $nicks ) ) :
	
	foreach($users as $user) :

		//* Check if user exists if true, go to password check
		if($user->user_nick == $nick_login) :
			
			//* Check if password is correct
			if($user->user_password == $password_login) :
				
				//* All ready				
				echo 'ok';
				
			else :
				
				//* No pass found
				echo 'no pass';
				
			endif;
				
		else :
				
			//* No user found
			echo 'no user';
				
		endif;
				
	endforeach;
	
else :
	
	//* No user found
	echo 'no user';

endif;