color 本地 else ray spa png arr 需要
- <?php
- /**
- * 图像裁剪
- * @param $source_path 原图路径
- * @param $target_width 需要裁剪的宽
- * @param $target_height 需要裁剪的高
- * @return bool
- */
- function imagecropper($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 / $target_width;
- // 源图过高
- if ($source_ratio > $target_ratio) {
- $cropped_width = $source_width;
- $cropped_height = $source_width * $target_ratio;
- $source_x = 0;
- $source_y = ($source_height - $cropped_height) / 2;
- } // 源图过宽
- elseif ($source_ratio < $target_ratio) {
- $cropped_width = $source_height / $target_ratio;
- $cropped_height = $source_height;
- $source_x = ($source_width - $cropped_width) / 2;
- $source_y = 0;
- } // 源图适中
- else {
- $cropped_width = $source_width;
- $cropped_height = $source_height;
- $source_x = 0;
- $source_y = 0;
- }
- $funcList = array(
- 'image/gif' => array(
- 'create' => 'imagecreatefromgif',
- 'make' => 'imagegif',
- 'mime' => '.gif',
- ),
- 'image/jpeg' => array(
- 'create' => 'imagecreatefromjpeg',
- 'make' => 'imagejpeg',
- 'mime' => '.jpg',
- ),
- 'image/png' => array(
- 'create' => 'imagecreatefrompng',
- 'make' => 'imagepng',
- 'mime' => '.png',
- ),
- );
- if (isset($funcList[$source_mime])) {
- $curFunc = $funcList[$source_mime];
- } else {
- return FALSE;
- }
- $source_image = $curFunc['create']($source_path);
- $target_image = imagecreatetruecolor($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, $cropped_height);
- // 缩放
- imagecopyresampled($target_image, $cropped_image, 0, 0, 0, 0, $target_width, $target_height, $cropped_width, $cropped_height);
- //保存图片到本地(两者选一)
- $randNumber = mt_rand(00000, 99999) . mt_rand(000, 999);
- //$fileName = substr(md5($randNumber), 8, 16) . ".png";
- $fileName = time() . '_' . substr(md5($randNumber), 8, 16) . $curFunc['mime'];
- //imagepng($target_image, './' . $fileName);
- //imagepng($target_image, './' . $fileName);
- //$imgFunc2($target_image, './' . $fileName);
- $curFunc['make']($target_image, './' . $fileName);
- imagedestroy($target_image);
- //直接在浏览器输出图片(两者选一)
- /*header('Content-Type: image/jpeg');
- imagepng($target_image);
- imagedestroy($target_image);
- imagejpeg($target_image);
- imagedestroy($source_image);
- imagedestroy($target_image);
- imagedestroy($cropped_image);*/
- }
- //调用
- //imagecropper('./img033.jpg',300,300);
- imagecropper('./4.jpg', 140, 140);
- //imagecropper('./img033.jpg',55,55);
- ?>
<?php
/**
* 图像裁剪
* @param $source_path 原图路径
* @param $target_width 需要裁剪的宽
* @param $target_height 需要裁剪的高
* @return bool
*/
function imagecropper($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 / $target_width;
// 源图过高
if ($source_ratio> $target_ratio) {
$cropped_width = $source_width;
$cropped_height = $source_width * $target_ratio;
$source_x = 0;
$source_y = ($source_height - $cropped_height) / 2;
} // 源图过宽
elseif ($source_ratio < $target_ratio) {
$cropped_width = $source_height / $target_ratio;
$cropped_height = $source_height;
$source_x = ($source_width - $cropped_width) / 2;
$source_y = 0;
} // 源图适中
else {
$cropped_width = $source_width;
$cropped_height = $source_height;
$source_x = 0;
$source_y = 0;
}
$funcList = array(
'image/gif' => array(
'create' => 'imagecreatefromgif',
'make' => 'imagegif',
'mime' => '.gif',
),
'image/jpeg' => array(
'create' => 'imagecreatefromjpeg',
'make' => 'imagejpeg',
'mime' => '.jpg',
),
'image/png' => array(
'create' => 'imagecreatefrompng',
'make' => 'imagepng',
'mime' => '.png',
),
);
if (isset($funcList[$source_mime])) {
$curFunc = $funcList[$source_mime];
} else {
return FALSE;
}
$source_image = $curFunc['create']($source_path);
$target_image = imagecreatetruecolor($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, $cropped_height);
// 缩放
imagecopyresampled($target_image, $cropped_image, 0, 0, 0, 0, $target_width, $target_height, $cropped_width, $cropped_height);
// 保存图片到本地 (两者选一)
$randNumber = mt_rand(00000, 99999) . mt_rand(000, 999);
//$fileName = substr(md5($randNumber), 8, 16) . ".png";
$fileName = time() .'_'. substr(md5($randNumber), 8, 16) . $curFunc['mime'];
//imagepng($target_image,'./'. $fileName);
//imagepng($target_image,'./'. $fileName);
//$imgFunc2($target_image,'./'. $fileName);
$curFunc['make']($target_image,'./'. $fileName);
imagedestroy($target_image);
// 直接在浏览器输出图片 (两者选一)
/*header('Content-Type: image/jpeg');
imagepng($target_image);
imagedestroy($target_image);
imagejpeg($target_image);
imagedestroy($source_image);
imagedestroy($target_image);
imagedestroy($cropped_image);*/
}
// 调用
//imagecropper('./img033.jpg',300,300);
imagecropper('./4.jpg', 140, 140);
//imagecropper('./img033.jpg',55,55);
?>
php 图片剪切
来源: http://www.bubuko.com/infodetail-2011965.html