wpdk-html.php

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<?php
class WPDKHTML extends WPDKObject {

  public $__version = '1.0.2';

  public static function startCompress()
  {
    ob_start();
  }

  public static function endCompress()
  {
    $buffer = ob_get_contents();
    ob_end_clean();

    return $buffer;
  }

  public static function endCSSCompress()
  {
    $css = ob_get_contents();
    if( false === $css ) {
      return;
    }
    ob_end_clean();

    // Remove comments
    $css = preg_replace( '!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $css );

    // Replace with none
    $none = array(
      "\r\n",
      "\n",
      "\r",
      "\t",
      '  ',
      '   ',
      '    ',
    );
    $css  = str_replace( $none, '', $css );

    // Optimized
    $css = str_replace( array( '; ', ' ;', ';;' ) , ';', $css );
    $css = str_replace( array( ': ', ' :' ), ':', $css );
    $css = str_replace( array( '{ ', ' {' ), '{', $css );
    $css = str_replace( array( '} ', ' }', ';}' ) , '}', $css );
    $css = str_replace( array( ', ', ' ,  ' ) , ',', $css );
    $css = str_replace( array(' 0px', ':0px' ), '0', $css );
    $css = str_replace( '#000000', '#000', $css );
    $css = str_replace( array( '#ffffff', '#FFFFFF' ) , '#fff', $css );

    return trim( $css );
  }

  public static function endJavascriptCompress()
  {
    $js = ob_get_contents();
    if( false === $js ) {
      return;
    }
    ob_end_clean();

    // Remove comments
    //$content = preg_replace( '!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $content );

    // Replace with none
    $none = array(
      "\t",
      '  ',
      '   ',
      '    ',
    );
    $js   = str_replace( $none, '', $js );

    // Optimized
    $js = str_replace( array( '= ', ' =' ) , '=', $js );

    // Remove tabs, spaces, newlines, etc..
    $content = trim( $js );

    return $content;
  }

  public static function endHTMLCompress( $comments = false, $conditional = false )
  {
    $html = ob_get_contents();
    if( false === $html ) {
      return;
    }
    ob_end_clean();

    // Replace with none
    $none = array(
      "\r\n",
      "\n",
      "\r",
      "\t"
    );
    $html = str_replace( $none, '', $html );

    // Optimized
    $html = str_replace( array( '  ', '   ', '    ', '     ' ) , ' ', $html );

    return trim( $html );
  }

}