PHP多種圖片格式的簡單上傳_PHP教程

簡單地寫了一個PHP的圖片上傳，可以支援jpg、png、gif等格式的圖片，如果你想支援更多的格式，比如bmp，可以自己擴充。不是物件導向的，在這裡簡單記錄下，以便以後取用。

此處一次支援上傳2個圖片，上傳後產生原圖和品質較差的圖，原圖用於儲存品質高的圖片，品質差的圖用於網頁顯示。

PHP Code

 select_db($database);$work_group = check_input($_POST['work_group']);$name = check_input($_POST['name']);$tel = check_input($_POST['tel']);$id_card = check_input($_POST['id_card']);$work_name = check_input($_POST['work_name']);$place = check_input($_POST['place']);$work1 = check_input($_POST['work1']);date_default_timezone_set('PRC');$date = date("Y-m-d H:i:s");$quality = 100;$quality2 = 70;$quality_png = 9;$quality2_png = 7;if(isset($_FILES['work1']) && $_FILES['work1']['error']==0){$size = getimagesize($_FILES['work1']['tmp_name']);$original = $_FILES['work1']['tmp_name'];$type = $_FILES['work1']['type'];//echo $type;$target_name = date('YmdHis').'_'.preg_replace('`[^a-z0-9-_.]`i','',$_FILES['work1']['name']);$work1 = $target_name;$target = dirname(__FILE__).'/uploads/'.$target_name;switch($type){case "image/jpeg":$resultImage = imagecreatefromjpeg($original);imagejpeg($resultImage, $target, $quality); break;case "image/png":$resultImage = imagecreatefrompng($original);imagepng($resultImage, $target, $quality_png);break;case "image/gif":$resultImage = imagecreatefromgif($original);imagegif($resultImage, $target, $quality);break;default :die("不支援此檔案類型");        exit;}$work1_small = $target_name;$target = dirname(__FILE__).'/uploads/small/'.$target_name;switch($type){case "image/jpeg":$resultImage = imagecreatefromjpeg($original);imagejpeg($resultImage, $target, $quality2); break;case "image/png":$resultImage = imagecreatefrompng($original);imagepng($resultImage, $target, $quality2_png);break;case "image/gif":$resultImage = imagecreatefromgif($original);imagegif($resultImage, $target, $quality2);break;default :die("不支援此檔案類型");        exit;}}if(isset($_FILES['work2']) && $_FILES['work2']['error']==0){$size = getimagesize($_FILES['work2']['tmp_name']);$original = $_FILES['work2']['tmp_name'];$type = $_FILES['work2']['type'];$target_name = date('YmdHis').'_'.preg_replace('`[^a-z0-9-_.]`i','',$_FILES['work2']['name']);$work2 = $target_name;$target = dirname(__FILE__).'/uploads/'.$target_name;switch($type){case "image/jpeg":$resultImage = imagecreatefromjpeg($original);imagejpeg($resultImage, $target, $quality); break;case "image/png":$resultImage = imagecreatefrompng($original);imagepng($resultImage, $target, $quality_png);break;case "image/gif":$resultImage = imagecreatefromgif($original);imagegif($resultImage, $target, $quality);break;default :die("不支援此檔案類型");        exit;}$work2_small = $target_name;$target = dirname(__FILE__).'/uploads/small/'.$target_name;switch($type){case "image/jpeg":$resultImage = imagecreatefromjpeg($original);imagejpeg($resultImage, $target, $quality2); break;case "image/png":$resultImage = imagecreatefrompng($original);imagepng($resultImage, $target, $quality2_png);break;case "image/gif":$resultImage = imagecreatefromgif($original);imagegif($resultImage, $target, $quality2);break;default :die("不支援此檔案類型");        exit;}}$sql="insert into photo(work_group,name,tel,id_card,work_name,place,work,work_small,date)   values('$work_group','$name','$tel','$id_card','$work_name','$place','$work1','$work1_small','$date')";//echo $sql;$result = $connector -> query($sql) or die(mysql_error());if($work2 != "" && $work2_small != null){$sql2="insert into photo(work_group,name,tel,id_card,work_name,place,work,work_small,date)   values('$work_group','$name','$tel','$id_card','$work_name','$place','$work2','$work2_small','$date')";$result2 = $connector -> query($sql2) or die(mysql_error());}$connector -> close($connector);$page="../upload.php";echo "";?>

有些問題需要說明下：

JPEG映像產生的映像的品質的是一個範圍從0（最低品質，最小的檔案大小）到100（最高品質，最大檔案大小）。而ImagePNG產生映像的品質範圍從0到9的，傳入的這個範圍以外的參數則該函數不會工作。

判斷上傳檔案的類型，$type = $_FILES['work1']['type'];。

建立各種格式的圖片可以使用這些函數：imagecreatefromjpeg()、imagecreatefrompng()、imagecreatefromgif()。

http://www.bkjia.com/PHPjc/752564.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/752564.htmlTechArticle簡單地寫了一個PHP的圖片上傳，可以支援jpg、png、gif等格式的圖片，如果你想支援更多的格式，比如bmp，可以自己擴充。不是物件導向的，...

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