本文实例讲述了PHP实现图片按比例截取的方法。分享给大家供大家参考,具体如下:
array("create"=>"ImageCreateFromjpeg","output"=>"imagejpeg","exn"=>".jpg"),"gif" => array("create"=>"ImageCreateFromGIF","output"=>"imagegif","exn"=>".gif"),"jpeg" => array("create"=>"ImageCreateFromjpeg","png" => array("create"=>"imagecreatefrompng","output"=>"imagepng","exn"=>".png"),"wbmp" => array("create"=>"imagecreatefromwbmp","output"=>"image2wbmp","exn"=>".wbmp")
);
$imgtype = getimagesize($filename);
$width = $imgtype[0];
$height = $imgtype[1];
$type = str_replace('image/','',$imgtype['mime']);
$func_create = $all_type[$type]['create'];
$func_output = $all_type[$type]['output'];
$x = $y =0;
if(($width * 100)>($height * 120))
{
$newwidth = ceil($height * 120/100);
$newheight = $height;
$x = ($width-$newwidth)/2;
}
elseif(($width * 100)<($height * 120))
{
$newheight = ceil($width * 100/120);
$newwidth = $width;
$y = ($height-$newheight)/2;
}
else
{
$newheight = $height;
$newwidth = $width;
}
// Load
$thumb = imagecreatetruecolor($newwidth,$newheight);
$source = $func_create($filename);
// Resize
imagecopyresized($thumb,$source,$newwidth,$newheight,$newheight);
// Output
$func_output($thumb,'a.jpeg');
PS:这里再为大家推荐几款比较实用的图片处理工具供大家参考使用:
在线图片转换BASE64工具:
更多关于PHP相关内容感兴趣的读者可查看本站专题:《》、《》、《》、《》、《》、《》、《》、《》及《PHP常见数据库操作技巧汇总》
希望本文所述对大家PHP程序设计有所帮助。
原文链接:https://www.f2er.com/php/18022.html