PHP 獲取文件夾圖片並切割

<?php
/**
* 圖像裁剪
* @param $title string 原圖路徑
* @param $content string 需要裁剪的寬
* @param $encode string 需要裁剪的高
*/
function imagecropper($source_path, $target_width, $target_height)
{
$source_info = getimagesize($source_path);
$source_width = $source_info[0];
$source_height = $source_info[1];
$source_mime = $source_info['mime'];
$source_ratio = $source_height / $source_width;
$target_ratio = $target_height / $target_width;

// 源圖過高
if ($source_ratio > $target_ratio)
{
$cropped_width = $source_width;
$cropped_height = $source_width * $target_ratio;
$source_x = 0;
$source_y = ($source_height - $cropped_height) / 2;
}
// 源圖過寬
elseif ($source_ratio < $target_ratio)
{
$cropped_width = $source_height / $target_ratio;
$cropped_height = $source_height;
$source_x = ($source_width - $cropped_width) / 2;
$source_y = 0;
}
// 源圖適中
else
{
$cropped_width = $source_width;
$cropped_height = $source_height;
$source_x = 0;
$source_y = 0;
}

switch ($source_mime)
{
case 'image/gif':
$source_image = imagecreatefromgif($source_path);
break;

case 'image/jpeg':
$source_image = imagecreatefromjpeg($source_path);
break;

case 'image/png':
$source_image = imagecreatefrompng($source_path);
break;

default:
return false;
break;
}

$target_image = imagecreatetruecolor($target_width, $target_height);
$cropped_image = imagecreatetruecolor($cropped_width, $cropped_height);

// 裁剪
imagecopy($cropped_image, $source_image, 0, 0, $source_x, $source_y, $cropped_width, $cropped_height);
// 縮放
imagecopyresampled($target_image, $cropped_image, 0, 0, 0, 0, $target_width, $target_height, $cropped_width, $cropped_height);

// 保存圖片到本地(兩者選一)
$randNumber = $source_path.mt_rand(00000, 99999). mt_rand(000, 999);
$fileName = substr(md5($randNumber), 8, 16) .".png";
imagepng($target_image,'./new_imgs/'.$fileName);
imagedestroy($target_image);

//直接在瀏覽器輸出圖片(兩者選一)
// header('Content-Type: image/jpeg');
// imagepng($target_image);
// imagedestroy($target_image);
// imagejpeg($target_image);
// imagedestroy($source_image);
// imagedestroy($target_image);
// imagedestroy($cropped_image);
}
$hostdir=dirname(__FILE__).'/head_img/one';
$filesnames = scandir($hostdir);
$count = count($filesnames);
foreach ($filesnames as $key => $value) {
	if($value == '.' || $value == '..'){
		unset($filesnames[$key]);
	}else{
		imagecropper('./head_img/one/'.$value,132,132);
	}

}
// echo "<pre>";
// print_r($filesnames);die;

?>