Indie-Resource.com

Code: Select all

<?php

class CssCompression
{

    private     $files = array();
    private     $toFile;
    private     $fromPath;
    private     $toPath;
    private     $ext;

    public function CssCompression($files, $toFile='style', $ext='.css',$fromPath='', $toPath='')
    {
        $this->files=$files;
        $this->toFile=$toFile;
        $this->fromPath=$fromPath;
        $this->toPath=$toPath;
        $this->ext=$ext;
        $this->content='';
    }

    /**
     * @param <type> string de content van de file.
     * @return <type> string The compressed string
     */
    public function compress ($file)
    {
        $buffer = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $file);
        $buffer = str_replace(array("\r\n", "\r", "\n", "\t", '  ', '    ', '    '), '', $buffer);
        
        return $buffer;
    }

    /**
     * This method checks if the dates of the files have been modified. If the given array
     * has a file more recently edited then the main file, this function will write new output.
     * @return <type> boolean true if a file is newer, flase if not
     */
    public function verifyDates ()
    {
        foreach($this->files as $file)
        {
            if( filemtime($this->fromPath.$file.$this->ext) > filemtime($this->toPath.$this->toFile.$this->ext) )
                return true;
        }
        return false;
    }
    
    function getLatestTime(){
        return filemtime($this->toPath.$this->toFile.$this->ext);
    }

    /**
     * Write all buffered Output back to the main file.
     * @return <type> bool true on succcess, false on failure
     */
    public function writeNewCss ()
    {

        $this->content = "/* Style.css |  | Last edit: ".date("Y-m-d H:i:s")." */\n";
        foreach($this->files as $file)
        {
            $this->content.=$this->getContentFromCss($file);
        }
        if(file_put_contents($this->toPath.$this->toFile.$this->ext, $this->content))
        {
            return true;
        }
        return false;
    }

    /**
     *  Returns all content from the css as a strong
     * 
     * @param <type> string $file
     * @return <type> string $buffer
     */
    public function getContentFromCss ($file)
    {
        $buffer= " \n\n/* File: ".$file.$this->ext." */\n";
        $buffer.= $this->compress(file_get_contents($this->fromPath.$file.$this->ext));
        return $buffer;
    }

    /**
     * print output of all files
     */
    public function printContent()
    {
        return $this->content;
    }

    
}

Code: Select all

require "path/to/CssCompression.php";

$filesToCompress = array('header', 'footer', 'content');
$css = new CssCompression($filesToCompress, "nameOfCompressedFile", ".css", "css/", "css/");

// Now, to actually compress the files, you have to check if the files have been modified
if($css->verifyDates()){ 
     // A newer date was found, so it should recompress
     $css->writeNewCss();
}

Code: Select all

<?php

require "/my/path/to/CssCompression.php";

$path = "http://localhost/project/resources/css/";
$files = array('header', 'footer', 'content', 'forms', 'ui', 'notify');

$css = new CssCompression($files, 'style', '.css', $path, $path);

if($css->verifyDates() ) {
     $css->writeNewCss();
}

$latest = $css->getLatestTime();

?>
<link type="text/css" rel="stylesheet" href="'.$path.'style.css?v='.$latest.'" />