SASS_in_wp.php

<?php
	public function compiler($in, $out)
	{
		try {
			$scss = new Compiler();

			$scss->setImportPaths(OP_PATH.'assets/scss/');

			echo $css = $scss->compile(file_get_contents($in), $in);

			file_put_contents($out, $css);
		}
		catch (Exception $e) {
              $errors = array (
                'file' => basename($in),
                'message' => $e->getMessage(),
                );
              array_push($instance->compile_errors, $errors);

              echo '<pre>'; print_r($errors); echo '</pre>';
          }
	}

	public function wp_scss()
	{
	    foreach(new DirectoryIterator($this->scss_dir) as $file) 
	    {
	        if (substr($file, 0, 1) != "_" && pathinfo($file->getFilename(), PATHINFO_EXTENSION) == 'scss') 
	        {
	            $input = $this->scss_dir.$file->getFilename();
		        $outputName = preg_replace("/\.[^$]*/",".css", $file->getFilename());
		        $output = $this->css_dir.$outputName;
		        $this->compiler($input, $output);
	        }
	    }
	}