/**
* Make the image greyscale: supported only for PHP => 5.* and PHP => 4.0.1 except for PHP 4.3.11
*
* @param Asido_TMP &$tmp
* @return boolean
* @access protected
*/
function __grayscale(&$tmp)
{
// the shorter path: function already exists
//
if (function_exists('imagefilter')) {
return imagefilter($tmp->target, IMG_FILTER_GRAYSCALE);
return true;
}
// a bit wicked path: PHP 4.3.11 has a bug in this function
//
if (!in_array(PHP_VERSION, array('4.3.11'))) {
return imageCopyMergeGray($tmp->target, $tmp->target, 0, 0, 0, 0, $tmp->image_width, $tmp->image_height, 0);
}
return false;
}
/**
* Make the image greyscale: supported only for PHP => 5.* and PHP => 4.0.1 except for PHP 4.3.11
*
* @param asido_tmp $tmp
* @return boolean
* @access protected
*/
protected function __grayscale(asido_tmp $tmp)
{
// the shorter path: function already exists
//
if (function_exists('imagefilter')) {
return imagefilter($tmp->target, IMG_FILTER_GRAYSCALE);
return true;
}
// a bit wicked path: prior to `PHP 4.3.11` and
// `PHP 5.0.4` there is a bug w/ imageCopyMergeGray()
//
if (version_compare(PHP_VERSION, '4.3.11') > 0 || version_compare(PHP_VERSION, '5.0.4') > 0) {
return imageCopyMergeGray($tmp->target, $tmp->target, 0, 0, 0, 0, $tmp->image_width, $tmp->image_height, 0);
}
return false;
}
