Function to create list of class and functions of a list of given files

example.php

//This is an example for Codeigniter (v3 at the moment but it should work with any version)!
//Just copy and paste the code below into a controller you have
//Do some fine-tuning and choose the files you want to scan!

//...
//Here the class you want to put the function in 

  public function docs(){

		echo '<h2>DOCS</h2>';
		
		
		$files = array(
			"Controllers"=>"application/controllers",
			"Models"=>"application/models",
			"Libraries"=>"application/libraries",
			"Third Party"=>"application/third_party"
		);
		
		foreach($files as $tipo=>$dir){
			
			try{
				echo "<hr/><h3>Analisi $tipo</h3><hr/>";
				$class_files = scandir($dir);
				
				unset($class_files[0]);
				unset($class_files[1]);
				
				echo '<p><b>Linea '.__LINE__.'</b></p><pre>';print_r($class_files);echo '</pre><p><i>File: '.__FILE__.'</i></p>';
			
			
				foreach($class_files as $file_og){
					$file = explode(".", $file_og);
				
					if(@$file[1]!="php") continue;
						require_once "./$dir/$file_og";
						
						echo "<h4>Class $file[0]</h4><ul>";
						
						foreach($this->get_this_class_methods($file[0]) as $v){
							echo "<li>$v ( ";
							$r = new ReflectionMethod($file[0], $v);
							$params = $r->getParameters();
							$parametri = [];
							foreach ($params as $param) {
							    //$param is an instance of ReflectionParameter
							    
							    try{
								    $default = $param->getDefaultValue();
								}catch(Exception $e){
									$default = '""';
								}
								$type = gettype($default);
								if($type=="NULL")
									$type = "";
									
							    if(is_string($default)){
								    $default = "'$default'";
							    }else if(is_array($default)){
								    $default = json_encode($default);
							    }else if(is_object($default)){
								    $default = json_encode($default);
							    }else if(is_bool($default)){
								    $default = ($default===true?"true":"false");
							    }
							    $parametri[] = "<b>$".$param->getName()."</b><i>".($param->isOptional()?"=($type)<b>".$default."</b>":"")."</i>";
							}
							echo implode(" , ", $parametri);
							echo " )</li>";
						}
						echo "</ul>";
				}
			}catch(Exception $e){
				echo "<h4>Problema con file $file_og</h4>";
			}
			
		}
		
	}

		
	function get_this_class_methods($class){
		try{
		    $array1 = get_class_methods($class);
		    if($parent_class = get_parent_class($class)){
		        $array2 = get_class_methods($parent_class);
		        $array3 = array_diff($array1, $array2);
		    }else{
		        $array3 = $array1;
		    }
		    return($array3);
		}catch(Exception $e){
			
		}
	}

//Here the rest of the file
//... }