| sarettah |
01-06-2018 03:14 PM |
Batch optimizing and watermarking images using php
Requires PHP and the GD Libraries.
Optimize images class:
Code:
<?php
namespace sarettahs_image_script;
// class to create optimized images and thumbnails from original images. Sarettah
// program expects image folder to be structured as image_folder/set_folder/image
// accepts jpg, gif or png input
// creates jpg, gif or png output
class optimize_images
{
public $verbose=0;
// optimized image dimensions
public $maxheight=1000;
public $maxwidth=1000;
// thumb dimensions
public $thumbheight=350;
public $thumbwidth=350;
// types of images to process
public $imagelist='jpg,jpeg,gif,png';
// type of image to create can be jpg, gif, png
public $image_output='jpg';
// folders to use
public $base_dir='';
public $optimized_dir='';
public $thumb_dir='';
// watermark image to use
public $watermark='';
// err report
public $errmess='';
// counts
public $tot_files_made=0;
public $tot_files_failed=0;
public $tot_thumbs_made=0;
public $tot_thumbs_failed=0;
protected $make_thumbs=0;
protected $folder_list=array();
protected $file_list=array();
protected $files_made=0;
protected $files_failed=0;
protected $thumbs_made=0;
protected $thumbs_failed=0;
public function mainline()
{
if(substr_count($this->imagelist,$this->image_output)==0)
{
$image_output='jpg';
}
// error out if base folder or optimized folder is not defined.
if(empty($this->base_dir))
{
$this->errmess .="No Base Folder Defined<br>\n";
}
if(!is_dir($this->base_dir))
{
$this->errmess .="Base Folder " . $this->base_dir . " does not exist<br>\n";
}
if(empty($this->optimized_dir))
{
$this->errmess .="No Optimized Folder Defined<br>\n";
}
elseif(!is_dir($this->optimized_dir))
{
mkdir($this->optimized_dir);
if(!is_dir($this->optimized_dir))
{
$this->errmess .="Could not create folder " . $this->optimized_dir . "<br>\n";
}
}
// if no errors then go ahead and start it up
if(empty($this->errmess))
{
// if thumb directory is defined then we will make thumbs
if(!empty($this->thumb_dir))
{
if(!is_dir($this->thumb_dir))
{
mkdir($this->thumb_dir);
}
if(!is_dir($this->thumb_dir))
{
$this->errmess .="Could not create folder " . $this->thumb_dir . "<br>\n";
$this->make_thumbs=0;
}
else
{
$this->make_thumbs=1;
}
}
else
{
$this->make_thumbs=0;
}
$this->process_images();
}
}
protected function process_images()
{
set_time_limit(0);
// get the folders inside the base folder
$this->get_folders();
if($this->verbose)
{
echo "found " . count($this->folder_list) . " folders<br>\n";
flush();
}
// process through each folder in base folder for images
foreach($this->folder_list as $folder)
{
if($this->verbose)
{
echo "Getting files for folder " . $folder . "<br>\n";
flush();
}
$this->process_folder($this->base_dir, $folder);
}
}
protected function process_folder($basedir, $folder)
{
$dir2use=$basedir . $folder . "/";
// get a list of the files in the folder
$this->get_files($dir2use);
if($this->verbose)
{
echo "Found " . count($this->file_list) . " files<br>\n";
flush();
}
// initialize counters
$this->files_made=0;
$this->files_failed=0;
$this->thumbs_made=0;
$this->thumbs_failed=0;
foreach($this->file_list as $image)
{
$this->make_optimized($dir2use, $image, $this->optimized_dir . $folder . '/', $this->maxheight, $this->maxwidth, $this->watermark);
$image2chk=substr($image,0,strrpos($image,'.')) . '.' . $this->image_output;
if(is_file($this->optimized_dir . $folder . '/' . $image2chk))
{
$this->files_made++;
}
else
{
$this->files_failed++;
}
if($this->make_thumbs)
{
$this->make_optimized($dir2use, $image, $this->thumb_dir . $folder . '/', $this->thumbheight, $this->thumbwidth, $this->watermark);
$image2chk=substr($image,0,strrpos($image,'.')) . '.' . $this->image_output;
if(is_file($this->thumb_dir . $folder . '/' . $image2chk))
{
$this->thumbs_made++;
}
else
{
$this->thumbs_failed++;
}
}
}
if($this->verbose)
{
echo "files made=" . $this->files_made . "<br>\n";
echo "files failed=" . $this->files_failed . "<br>\n";
echo "Thumbs made=" . $this->thumbs_made . "<br>\n";
echo "Thumbs Failed=" . $this->thumbs_failed . "<br>\n";
}
$this->tot_files_made +=$this->files_made;
$this->tot_files_failed +=$this->files_failed;
$this->tot_thumbs_made +=$this->thumbs_made;
$this->tot_thumbs_failed +=$this->thumbs_failed;
}
protected function make_optimized($dir2use, $file_in, $newdir, $maxheight, $maxwidth, $watermark)
{
$imagename=$dir2use . $file_in;
// create new name using image extension
$newname=substr($file_in,0,strrpos($file_in,'.')) . '.' . $this->image_output;
$newname=$newdir . $newname;
$width2use=0;
$height2use=0;
$ratio=0.0000;
if(is_file($imagename))
{
$copyit=0;
list($origwidth, $origheight, $type, $attr) = getimagesize($imagename);
if($origwidth>0 && $origheight>0)
{
if($origheight<=$maxheight && $origwidth<=$maxwidth)
{
// if the image coming in is smaller than our optimized size then we just want to copy the image instead of re-sizing it
$copyit=1;
}
// if the image coming in is smaller than our optimized size then we want to compute a ratio to use for re-sizing the image
if($origheight>$origwidth)
{
if($origheight<$maxheight)
{
$maxheight=$origheight;
}
$ratio=$maxheight/$origheight;
$width2use=$origwidth * $ratio;
$height2use=$maxheight;
}
else
{
if($origwidth<$maxwidth)
{
$maxwidth=$origwidth;
}
$ratio=$maxwidth/$origwidth;
$height2use=$origheight * $ratio;
$width2use=$maxwidth;
}
if(!is_dir($newdir))
{
mkdir($newdir);
}
if(is_dir($newdir))
{
$right=20;
$bottom=20;
$imagestr=file_get_contents($imagename);
$image2use=imagecreatefromstring($imagestr);
$imagestr='';
$use_watermark=0;
if(!empty($watermark) && is_file($watermark))
{
$use_watermark=1;
$imagestr=file_get_contents($watermark);
$watermark2use=imagecreatefromstring($imagestr);
$imagestr='';
}
if($use_watermark)
{
// place watermark onto image
imagecopy($image2use, $watermark2use, imagesx($image2use) - imagesx($watermark2use) - $right, imagesy($image2use) - imagesy($watermark2use) - $bottom, 0, 0, imagesx($watermark2use), imagesx($watermark2use));
}
if($copyit)
{
// copy image without resizing it
$this->make_image($image2use, $newname);
}
else
{
// copy image while resizing it
$newimage = imagecreatetruecolor($width2use, $height2use);
imagecopyresampled($newimage, $image2use, 0, 0, 0, 0, $width2use, $height2use, $origwidth, $origheight);
$this->make_image($newimage, $newname);
imagedestroy($newimage);
}
imagedestroy($image2use);
if($use_watermark)
{
imagedestroy($watermark2use);
}
if(!is_file($newname))
{
if($copyit)
{
$this->errmess .="Could not copy image " . $newname . "<br>\n";
}
else
{
$this->errmess .="Could not create image " . $newname . "<br>\n";
}
}
}
else
{
$this->errmess .="Could not create directory " . $newdir . "<br>\n";
}
}
}
}
protected function make_image($image2use, $newname)
{
if($this->image_output=='jpg')
{
imagejpeg($image2use,$newname);
}
elseif($this->image_output=='gif')
{
imagegif($image2use,$newname);
}
elseif($this->image_output=='png')
{
imagepng($image2use,$newname);
}
}
protected function get_folders()
{
$folderlist=scandir($this->base_dir);
foreach($folderlist as $folder)
{
if(trim($folder)<>'..' && trim($folder)<>'.')
{
$path2chk=$this->base_dir . $folder . '/';
if(is_dir($path2chk))
{
$this->folder_list[]=trim($folder);
}
}
}
}
protected function get_files($pathin)
{
if(is_dir($pathin))
{
$filelist=scandir($pathin);
foreach($filelist as $file)
{
$file2chk=$pathin . $file;
if(is_file($file2chk))
{
// only return image files
if(substr_count($this->imagelist,strtolower(trim(pathinfo($file2chk)['extension'])))>0)
{
$this->file_list[]=trim($file);
}
}
}
}
}
}
?>
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