{"id":842,"date":"2017-01-21T07:44:28","date_gmt":"2017-01-20T22:44:28","guid":{"rendered":"http:\/\/blue-bear.jp\/kb\/?p=842"},"modified":"2017-01-21T07:45:13","modified_gmt":"2017-01-20T22:45:13","slug":"php-jpeggifpng%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e3%83%aa%e3%82%b5%e3%82%a4%e3%82%ba%e3%83%bb%e3%83%88%e3%83%aa%e3%83%9f%e3%83%b3%e3%82%b0%e3%81%97%e3%81%a6%e3%83%ad%e3%83%bc%e3%82%ab","status":"publish","type":"post","link":"https:\/\/blue-bear.jp\/kb\/php-jpeggifpng%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e3%83%aa%e3%82%b5%e3%82%a4%e3%82%ba%e3%83%bb%e3%83%88%e3%83%aa%e3%83%9f%e3%83%b3%e3%82%b0%e3%81%97%e3%81%a6%e3%83%ad%e3%83%bc%e3%82%ab\/","title":{"rendered":"[PHP] JPEG\/GIF\/PNG\u30d5\u30a1\u30a4\u30eb\u3092\u30ea\u30b5\u30a4\u30ba\u30fb\u30c8\u30ea\u30df\u30f3\u30b0\u3057\u3066\u30ed\u30fc\u30ab\u30eb\u306b\u4fdd\u5b58\u3059\u308b"},"content":{"rendered":"<h2>JPEG\/GIF\/PNG\u30d5\u30a1\u30a4\u30eb\u3092\u30ea\u30b5\u30a4\u30ba\u30fb\u30c8\u30ea\u30df\u30f3\u30b0\u3057\u3066\u30ed\u30fc\u30ab\u30eb\u306b\u4fdd\u5b58\u3059\u308b<\/h2>\n<p>JPEG\/GIF\/PNG\u30d5\u30a1\u30a4\u30eb\u3092\u30ea\u30b5\u30a4\u30ba\u30fb\u30c8\u30ea\u30df\u30f3\u30b0\u3057\u3066\u30ed\u30fc\u30ab\u30eb\u306b\u4fdd\u5b58\u3059\u308b\u95a2\u6570\u3092\u4f5c\u6210\u3057\u305f<\/p>\n<p>\u6a2a\u9577\u3067\u3082\u7e26\u9577\u3067\u3082\u4e2d\u592e\u3092\u4e2d\u5fc3\u306b\u6b63\u65b9\u5f62\u306b\u30c8\u30ea\u30df\u30f3\u30b0\u3059\u308b\u3002<br \/>\n\u51fa\u529b\u30d5\u30a1\u30a4\u30eb\u306fPNG\u5f62\u5f0f\u3060\u304c<br \/>\nimagepng($out,$dir.&#8221;\/&#8221;.$fileName.&#8221;.png&#8221;);<br \/>\n\u306e\u90e8\u5206\u3092imagegif \/ imagejpeg\u306b\u5909\u66f4\u3059\u308c\u3070\u3088\u3044<\/p>\n<pre>\r\nfunction resizeImage($url,$dir = \".\",$fileName = \"image\"){\r\n        list($w,$h,$type) = getimagesize($url);\r\n        \r\n        \/\/\u51fa\u529b\u3059\u308b\u753b\u50cf\u306e\u30b5\u30a4\u30ba\r\n        $thumbW = 300;\r\n        $thumbH = 300;\r\n        \/\/\u571f\u53f0\u306e\u753b\u50cf\u3092\u4f5c\u308b\r\n        $thumbnail = imagecreatetruecolor($thumbW, $thumbH);\r\n        \r\n        if($w > $h){\r\n            $diff  = ($w - $h) * 0.5; \r\n            $diffW = $h;\r\n            $diffH = $h;\r\n            $diffY = 0;\r\n            $diffX = $diff;\r\n        }elseif($w < $h){\r\n            $diff  = ($h - $w) * 0.5; \r\n            $diffW = $w;\r\n            $diffH = $w;\r\n            $diffY = $diff;\r\n            $diffX = 0;\r\n        }elseif($w === $h){\r\n            $diffW = $w;\r\n            $diffH = $h;\r\n            $diffY = 0;\r\n            $diffX = 0;\r\n        }\r\n        \r\n        \r\n        switch($type){\r\n            case IMAGETYPE_JPEG:\r\n                $in = imagecreatefromjpeg($url);\r\n                break;\r\n            case IMAGETYPE_GIF:\r\n                $in = imagecreatefromgif($url);\r\n                break;\r\n            case IMAGETYPE_PNG:\r\n                $in = imagecreatefrompng($url);\r\n                break;\r\n        }\r\n        \r\n        $out = ImageCreateTrueColor($thumbW , $thumbH);\r\n        imagealphablending($out, false);\r\n        imagesavealpha($out, true);                    \r\n        ImageCopyResampled($out,$in,0,0,$diffX,$diffY, $thumbW, $thumbH, $diffW, $diffH);\r\n        \r\n        imagepng($out,$dir.\"\/\".$fileName.\".png\");\r\n        imagedestroy($out);\r\n        imagedestroy($in);\r\n}\r\n\r\n<\/pre>\n<p>\u51e6\u7406\u524d\uff1a600px x 426px<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/blue-bear.jp\/kb\/wp-content\/uploads\/2017\/01\/broccoli-1974801_640-1.jpg\" alt=\"broccoli-1974801_640 (1)\" width=\"640\" height=\"426\" class=\"alignnone size-full wp-image-843\" srcset=\"https:\/\/blue-bear.jp\/kb\/wp-content\/uploads\/2017\/01\/broccoli-1974801_640-1.jpg 640w, https:\/\/blue-bear.jp\/kb\/wp-content\/uploads\/2017\/01\/broccoli-1974801_640-1-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/p>\n<p>\u51e6\u7406\u5f8c\uff1a300px x 300px<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/blue-bear.jp\/kb\/wp-content\/uploads\/2017\/01\/broccoli-1974801_640.jpg\" alt=\"broccoli-1974801_640\" width=\"300\" height=\"300\" class=\"alignnone size-full wp-image-844\" srcset=\"https:\/\/blue-bear.jp\/kb\/wp-content\/uploads\/2017\/01\/broccoli-1974801_640.jpg 300w, https:\/\/blue-bear.jp\/kb\/wp-content\/uploads\/2017\/01\/broccoli-1974801_640-150x150.jpg 150w, https:\/\/blue-bear.jp\/kb\/wp-content\/uploads\/2017\/01\/broccoli-1974801_640-70x70.jpg 70w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>JPEG\/GIF\/PNG\u30d5\u30a1\u30a4\u30eb\u3092\u30ea\u30b5\u30a4<\/p>\n","protected":false},"author":1,"featured_media":844,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[111,112,33],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/blue-bear.jp\/kb\/wp-json\/wp\/v2\/posts\/842"}],"collection":[{"href":"https:\/\/blue-bear.jp\/kb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blue-bear.jp\/kb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blue-bear.jp\/kb\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blue-bear.jp\/kb\/wp-json\/wp\/v2\/comments?post=842"}],"version-history":[{"count":3,"href":"https:\/\/blue-bear.jp\/kb\/wp-json\/wp\/v2\/posts\/842\/revisions"}],"predecessor-version":[{"id":847,"href":"https:\/\/blue-bear.jp\/kb\/wp-json\/wp\/v2\/posts\/842\/revisions\/847"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blue-bear.jp\/kb\/wp-json\/wp\/v2\/media\/844"}],"wp:attachment":[{"href":"https:\/\/blue-bear.jp\/kb\/wp-json\/wp\/v2\/media?parent=842"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blue-bear.jp\/kb\/wp-json\/wp\/v2\/categories?post=842"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blue-bear.jp\/kb\/wp-json\/wp\/v2\/tags?post=842"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}