PHP压缩图片
发布时间:2020-05-26 01:00:45 所属栏目:PHP 来源:互联网
导读:PHP压缩图片
下面是脚本之家 jb51.cc 通过网络收集整理的代码片段。 脚本之家小编现在分享给大家,也给大家做个参考。 function scale_dimensions_within_limits($w,$h,$max_w,$max_h){ // $w is the width of the current rectangle // $h is the height of the current rectangle // $max_w is the maximum width that an image can be sized // $max_h is the maximum height that an image can be sized // **** Here's where the magic is starts **** // Switch the concept of horiz/vertical/square to long/short side $short_side_len = ($w < $h ? $w : $h); $long_side_len = ($w > $h ? $w : $h); // Set a variable to the variable name of the output variable $ssvar = ($w > $h ? 'h':'w'); $lsvar = ($w > $h ? 'w':'h'); $maxLSvar = "max_".$lsvar; $maxSSvar = "max_".$ssvar; // Do the first pass on the long side $ratio = $$maxLSvar/$long_side_len; $newSS = round($short_side_len * $ratio); $newLS = round($long_side_len * $ratio); // *** Note - the only coditional block! // If short side is still out of limit,limit the short side and adjust if($newSS > $$maxSSvar){ $ratio = $$maxSSvar/$newSS; $newLS = round($ratio*$newLS); $newSS = $$maxSSvar; } // **** Here's where the magic ends **** // Re-couple the h/w (or w/h) with the long/shortside counterparts // $$ means it's a variable variable (dynamic assignment) $$ssvar = $newSS; $$lsvar = $newLS; // Prep the return array $dimensions['w'] = $w; // this is derived from either $ssvar or $lsvar $dimensions['h'] = $h; return $dimensions; } 以上是脚本之家(jb51.cc)为你收集整理的全部代码内容,希望文章能够帮你解决所遇到的程序开发问题。 如果觉得脚本之家网站内容还不错,欢迎将脚本之家网站推荐给程序员好友。 (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! |