PHP 압축 이미지
WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
풀어 주다: 2016-07-25 08:45:11
- 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;
- }
复制代码
|
PHP
본 웹사이트의 성명
본 글의 내용은 네티즌들의 자발적인 기여로 작성되었으며, 저작권은 원저작자에게 있습니다. 본 사이트는 이에 상응하는 법적 책임을 지지 않습니다. 표절이나 침해가 의심되는 콘텐츠를 발견한 경우 admin@php.cn으로 문의하세요.
저자별 최신 기사
-
2025-02-26 03:58:14
-
2025-02-26 03:38:10
-
2025-02-26 03:17:10
-
2025-02-26 02:49:09
-
2025-02-26 01:08:13
-
2025-02-26 00:46:10
-
2025-02-25 23:42:08
-
2025-02-25 22:50:13
-
2025-02-25 21:54:11
-
2025-02-25 20:45:11
최신 이슈
-
2025-03-19 14:08:27
-
2025-03-19 14:07:29
-
2025-03-19 14:06:28
-
2025-03-19 14:05:31
-
2025-03-19 14:04:29