PHP实现图片不变型裁剪及图片按比例裁剪的方法
发布时间：2020-05-23 17:01:12 所属栏目：PHP 来源：互联网
导读：这篇文章主要介绍了PHP实现图片不变型裁剪及图片按比例裁剪的方法,涉及PHP裁剪缩略图的常用技巧,需要的朋友可以参考下
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本文实例讲述了PHP实现图片不变型裁剪及图片按比例裁剪的方法。分享给大家供大家参考，具体如下： 图片不变型裁剪$target_ratio){ // image-to-height $cropped_width = $source_width; $cropped_height = $source_width * $target_ratio; $source_x = 0; $source_y = ($source_height - $cropped_height) / 2; }elseif ($source_ratio < $target_ratio){ //image-to-widht $cropped_width = $source_height / $target_ratio; $cropped_height = $source_height; $source_x = ($source_width - $cropped_width) / 2; $source_y = 0; }else{ //image-size-ok $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 ; break; } $target_image = imagecreatetruecolor($target_width,$target_height); $cropped_image = imagecreatetruecolor($cropped_width,$cropped_height); // copy imagecopy($cropped_image,$source_image,$source_x,$source_y,$cropped_width,$cropped_height); // zoom imagecopyresampled($target_image,$cropped_image,$target_height,$cropped_height); header('Content-Type: image/jpeg'); imagejpeg($target_image); imagedestroy($source_image); imagedestroy($target_image); imagedestroy($cropped_image); } $filename = "8fcb7a0831b79c61.jpg"; imageCropper($filename,200,200); ?>图片按比例裁剪希望本文所述对大家PHP程序设计有所帮助。 （编辑：安卓应用网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |