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$maxwidth) || ($maxheight && $height > $maxheight)){if($maxwidth && $width > $maxwidth){$widthratio = $maxwidth/$width;$resizewidth=true;}if($maxheight && $height > $maxheight){$heightratio = $maxheight/$height;$resizeheight=true;}if($resizewidth && $resizeheight){if($widthratio$ratio = $widthratio;}else{$ratio = $heightratio;}}elseif($resizewidth){$ratio = $widthratio;}elseif($resizeheight){$ratio = $heightratio;}$newwidth = $width * $ratio;$newheight = $height * $ratio;if(function_exists("imagecopyresampled")){$newim = imagecreatetruecolor($newwidth, $newheight);imagecopyresampled($newim, $im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);}else{$newim = imagecreate($newwidth, $newheight);imagecopyresized($newim, $im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);}imagejpeg ($newim,$name . ".jpg");imagedestroy ($newim);}else{imagejpeg ($im,$name . ".jpg");}}if($_files['image']['size']){if($_files['image']['type'] == "image/pjpeg"){$im = imagecreatefromjpeg($_files['image']['tmp_name']);}elseif($_files['image']['type'] == "image/x-png"){$im = imagecreatefrompng($_files['image']['tmp_name']);}elseif($_files['image']['type'] == "image/gif"){$im = imagecreatefromgif($_files['image']['tmp_name']);}if($im){if(file_exists("$filename.jpg")){unlink("$filename.jpg");}resizeimage($im,$resizewidth,$resizeheight,$filename);imagedestroy ($im);}}?>http://www.bkjia.com/PHPjc/632985.html www.bkjia.com true http://www.bkjia.com/PHPjc/632985.html TechArticle gd搴撴槸php鏁欑▼涓竴涓鐞嗗浘鍍忕殑涓撶敤搴擄紝浠栧彲浠ユ柟渚垮揩鎹风殑澶勭悊澶у鏁版嵁澶勭悊锛屽畠鎻愪緵浜嗗ぇ閲忕殑鍥剧墖澶勭悊鍑芥暟锛屼笅闈㈡垜浠氨鍒╃敤gd搴撶殑鍑芥暟鏉?..