Image resize and cache on the fly

[GalaxyTramp]

I am using the following script on a couple of websites and it works well:

 

<?php

//////////////////////////////////////////////////////  THIS IS THE FUNCTION_RESIZE.PHP FILE ///////////////////////////////////////////////////////////////////////////////////////

/*
function by Wes Edling .. http://joedesigns.com
feel free to use this in any project, i just ask for a credit in the source code.
a link back to my site would be nice too.
*/

function resize($imagePath,$opts=null){

    # start configuration
    
    $cacheFolder = './cache/'; # path to your cache folder, must be writeable by web server
    $remoteFolder = $cacheFolder.'remote/'; # path to the folder you wish to download remote images into
    $quality = 90; # image quality to use for ImageMagick (0 - 100)
    
    $cache_http_minutes = 20;     # cache downloaded http images 20 minutes

    $path_to_convert = '/usr/bin/convert'; 
    
    ## you shouldn't need to configure anything else beyond this point

    $purl = parse_url($imagePath);
    $finfo = pathinfo($imagePath);
    $ext = $finfo['extension'];

    # check for remote image..
    if(isset($purl['scheme']) && $purl['scheme'] == 'http'):
        # grab the image, and cache it so we have something to work with..
        list($filename) = explode('?',$finfo['basename']);
        $local_filepath = $remoteFolder.$filename;
        $download_image = true;
        if(file_exists($local_filepath)):
            if(filemtime($local_filepath) < strtotime('+'.$cache_http_minutes.' minutes')):
                $download_image = false;
            endif;
        endif;
        if($download_image == true):
            $img = file_get_contents($imagePath);
            file_put_contents($local_filepath,$img);
        endif;
        $imagePath = $local_filepath;
    endif;

    if(file_exists($imagePath) == false):
        $imagePath = $_SERVER['DOCUMENT_ROOT'].$imagePath;
        if(file_exists($imagePath) == false):
            return 'image not found';
        endif;
    endif;

    if(isset($opts['w'])): $w = $opts['w']; endif;
    if(isset($opts['h'])): $h = $opts['h']; endif;

    $filename = md5_file($imagePath);

    if(!empty($w) and !empty($h)):
        $newPath = $cacheFolder.$filename.'_w'.$w.'_h'.$h.(isset($opts['crop']) && $opts['crop'] == true ? "_cp" : "").(isset($opts['scale']) && $opts['scale'] == true ? "_sc" : "").'.'.$ext;
    elseif(!empty($w)):
        $newPath = $cacheFolder.$filename.'_w'.$w.'.'.$ext;    
    elseif(!empty($h)):
        $newPath = $cacheFolder.$filename.'_h'.$h.'.'.$ext;
    else:
        return false;
    endif;

    $create = true;

    if(file_exists($newPath) == true):
        $create = false;
        $origFileTime = date("YmdHis",filemtime($imagePath));
        $newFileTime = date("YmdHis",filemtime($newPath));
        if($newFileTime < $origFileTime):
            $create = true;
        endif;
    endif;

    if($create == true):
        if(!empty($w) and !empty($h)):

            list($width,$height) = getimagesize($imagePath);
            $resize = $w;
        
            if($width > $height):
                $resize = $w;
                if(isset($opts['crop']) && $opts['crop'] == true):
                    $resize = "x".$h;                
                endif;
            else:
                $resize = "x".$h;
                if(isset($opts['crop']) && $opts['crop'] == true):
                    $resize = $w;
                endif;
            endif;

            if(isset($opts['scale']) && $opts['scale'] == true):
                $cmd = $path_to_convert." ".$imagePath." -resize ".$resize." -quality ".$quality." ".$newPath;
            else:
                $cmd = $path_to_convert." ".$imagePath." -resize ".$resize." -size ".$w."x".$h." xc:".(isset($opts['canvas-color'])?$opts['canvas-color']:"transparent")." +swap -gravity center -composite -quality ".$quality." ".$newPath;
            endif;
                        
        else:
            $cmd = $path_to_convert." ".$imagePath." -thumbnail ".(!empty($h) ? 'x':'').$w."".(isset($opts['maxOnly']) && $opts['maxOnly'] == true ? "\>" : "")." -quality ".$quality." ".$newPath;
        endif;

        $c = exec($cmd);
        
    endif;

    # return cache file path
    return str_replace($_SERVER['DOCUMENT_ROOT'],'',$newPath);
    
}

////////////////////////////////////////////////////////////////  THIS IS THE EXAMPLE.PHP FILE //////////////////////////////////////////////////////////////////////////////////////////////////////////

<?php
# include the function here
include 'function.resize.php';

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
    <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
    <title>PHP Image Resize - Example</title>
    <style>
        body { 
            background: #ffffff; 
            color: #121212; 
            font-family: lucida grande; 
            text-align: center; 
        }
        h1 { font-size: 15px; text-align: center; }
        #main { margin: auto; width: 600px; text-align: left; }
        .block { margin: 20px; background: #fafafa; padding: 20px; text-align: center; border: 1px solid #cacaca; }
        pre { text-align: left; background: #010101; padding: 10px; font-size: 11px; }
        pre code { text-align: left; color: #ffffff; }
        .block p { color: #343434; font-size: 12px; }
    </style>
</head>

<body>

<div id='main'>

    <h1>PHP Image Resizer</h1>


    <div class='block'>
        <?php $settings = array('w'=>150,'h'=>150,'crop'=>true); ?>
        <div><img src='<?=resize('http://www.image-online.com/admin.jpg',$settings)?>' border='0' /></div>
        <p>Image cropped & resized by width and height from a remote location.</p>
        <div><pre><code>src: http://www.image-online.com/admin.jpg<?php echo "\n\n"; print_r($settings)?></code></pre></div>
    </div>

</div>

</body>
</html>

?>

 

I now need the script to be able to resize images created dynamically from URL's in the following format: http://www.image-online.com/ShowImage.asp?SecId=zc&Id=P1&ImgId=03073

 

Is there any way of accessing the image created at this URL in order that I can manipulate it with this or another script.

 

Regards

 

GT