PhpMinifier.phpclass

<?php
/**************************************************************************************************************

    NAME
        PhpMinifier.phpclass

    DESCRIPTION
        Minifier for php sources.
	Note that this class has only been provided for consistency with the CssMinifier and JavascriptMinifier
	ones. However it does not use the mechanisms provided by the Minifier abstract class, but simply calls 
	the php_strip_whitespace() function.

    AUTHOR
        Christian Vigh, 07/2016.

    HISTORY
    [Version : 1.0]    [Date : 2016/07/13]     [Author : CV]
        Initial version.

 **************************************************************************************************************/

require_once ( dirname ( __FILE__ ) . "/Minifier.phpclass" ) ;



/*==============================================================================================================

    PhpMinifier class -
        Minifier for javascript sources.

  ==============================================================================================================*/
class	PhpMinifier	extends  Minifier 
   {
	/*--------------------------------------------------------------------------------------------------------------

	   Constructor -
		Initializes the parent minifier class.
	 
	 *-------------------------------------------------------------------------------------------------------------*/
	public function  __construct ( )
	   {
		parent::__construct ( ) ;
	    }


	/*--------------------------------------------------------------------------------------------------------------

	   MinifyData -
		Process the input stream.
		Since the php_strip_whitespace() function only accepts the name of an existing file, we have to write
		the contents to a temporary file, whatever the origin of the contents (even if they come from an 
		existing file).
		This is a dirty solution but it wil always be faster than parsing the php source by ourselves...
	 
	 *-------------------------------------------------------------------------------------------------------------*/
	protected function  MinifyData ( )
	   {
		$fp		=  tmpfile ( ) ;
		fwrite ( $fp, $this -> Content ) ;
		$info		=  stream_get_meta_data ( $fp ) ;
		$path		=  $info [ 'uri' ] ;
		$contents	=  php_strip_whitespace ( $path ) ;
		fclose ( $fp ) ;	// Removes the temporary file

		return ( $contents ) ;
	    }
    }