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php 上传图片的代码

程序员文章站 2022-04-29 14:45:05
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  1. /*

  2. * 参数说明
  3. * $max_file_size : 上传文件大小限制, 单位BYTE
  4. * $destination_folder : 上传文件路径
  5. * $watermark : 是否附加水印(1为加水印,其他为不加水印);
  6. * http://bbs.it-home.org
  7. * 使用说明:
  8. * 1. 将PHP.INI文件里面的"extension=php_gd2.dll"一行前面的;号去掉,因为我们要用到GD库;
  9. * 2. 将extension_dir =改为你的php_gd2.dll所在目录;
  10. */
  11. // 上传文件类型列表
  12. $uptypes = array (
  13. 'image/jpg',
  14. 'image/png',
  15. 'image/jpeg',
  16. 'image/pjpeg',
  17. 'image/gif',
  18. 'image/bmp',
  19. 'image/x-png'
  20. );
  21. $max_file_size = 20000000; //上传文件大小限制,单位BYTE
  22. $destination_folder = 'uploadimg/'; //上传文件路径
  23. $watermark = 1; //是否附加水印(1为加水印,其他为不加水印);
  24. $watertype = 1; //水印类型(1为文字,2为图片)
  25. $waterposition = 1; //水印位置(1为左下角,2为右下角,3为左上角,4为右上角,5为居中);
  26. $waterstring = "http://bbs.it-home.org/"; //水印字符串
  27. $waterimg = "xplore.gif"; //水印图片
  28. $imgpreview = 1; //是否生成预览图(1为生成,其他为不生成);
  29. $imgpreviewsize = 1 / 2; //缩略图比例
  30. ?>
  31. ZwelL图片上传程序
  32. if ($_SERVER['REQUEST_METHOD'] == 'POST') {

  33. //判断是否有上传文件
  34. if (is_uploaded_file($_FILES['upfile']['tmp_name'])) {

  35. $upfile = $_FILES['upfile'];
  36. print_r($_FILES['upfile']);
  37. $name = $upfilep['name']; //文件名
  38. $type = $upfile['type']; //文件类型
  39. $size = $upfile['size']; //文件大小
  40. $tmp_name = $upfile['tmp_name']; //临时文件
  41. $error = $upfile['error']; //出错原因
  42. if ($max_file_size echo '上传文件太大';

  43. exit ();
  44. }
  45. if (!in_arrar($type, $uptypes)) { //判断文件的类型

  46. echo '上传文件类型不符' . $type;
  47. exit ();
  48. }
  49. if (!file_exists($destination_folder)) {

  50. mkdir($destination_folder);
  51. }
  52. if (file_exists("upload/" . $_FILES["file"]["name"])) {

  53. echo $_FILES["file"]["name"] . " already exists. ";
  54. } else {
  55. move_uploaded_file($_FILES["file"]["tmp_name"], "upload/" . $_FILES["file"]["name"]);
  56. echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
  57. }
  58. $pinfo = pathinfo($name);

  59. $ftype = $pinfo['extension'];
  60. $destination = $destination_folder . time() . "." . $ftype;
  61. if (file_exists($destination) && $overwrite != true) {
  62. echo "同名的文件已经存在了";
  63. exit ();
  64. }
  65. if (!move_uploaded_file($tmp_name, $destination)) {

  66. echo "移动文件出错";
  67. exit ();
  68. }
  69. $pinfo = pathinfo($destination);

  70. $fname = $pinfo[basename];
  71. echo " 已经成功上传
    文件名: " . $destination_folder . $fname . "
    ";
  72. echo " 宽度:" . $image_size[0];
  73. echo " 长度:" . $image_size[1];
  74. echo "
    大小:" . $file["size"] . " bytes";
  75. if ($watermark == 1) {

  76. $iinfo = getimagesize($destination, $iinfo);
  77. $nimage = imagecreatetruecolor($image_size[0], $image_size[1]);
  78. $white = imagecolorallocate($nimage, 255, 255, 255);
  79. $black = imagecolorallocate($nimage, 0, 0, 0);
  80. $red = imagecolorallocate($nimage, 255, 0, 0);
  81. imagefill($nimage, 0, 0, $white);
  82. switch ($iinfo[2]) {
  83. case 1 :
  84. $simage = imagecreatefromgif($destination);
  85. break;
  86. case 2 :
  87. $simage = imagecreatefromjpeg($destination);
  88. break;
  89. case 3 :
  90. $simage = imagecreatefrompng($destination);
  91. break;
  92. case 6 :
  93. $simage = imagecreatefromwbmp($destination);
  94. break;
  95. default :
  96. die("不支持的文件类型");
  97. exit;
  98. }
  99. imagecopy($nimage, $simage, 0, 0, 0, 0, $image_size[0], $image_size[1]);

  100. imagefilledrectangle($nimage, 1, $image_size[1] - 15, 80, $image_size[1], $white);
  101. switch ($watertype) {

  102. case 1 : //加水印字符串
  103. imagestring($nimage, 2, 3, $image_size[1] - 15, $waterstring, $black);

  104. break;
  105. case 2 : //加水印图片
  106. $simage1 = imagecreatefromgif("xplore.gif");

  107. imagecopy($nimage, $simage1, 0, 0, 0, 0, 85, 15);
  108. imagedestroy($simage1);
  109. break;
  110. }
  111. switch ($iinfo[2]) {

  112. case 1 :
  113. //imagegif($nimage, $destination);
  114. imagejpeg($nimage, $destination);

  115. break;
  116. case 2 :
  117. imagejpeg($nimage, $destination);
  118. break;
  119. case 3 :
  120. imagepng($nimage, $destination);
  121. break;
  122. case 6 :
  123. imagewbmp($nimage, $destination);
  124. //imagejpeg($nimage, $destination);
  125. break;
  126. }
  127. //覆盖原上传文件

  128. imagedestroy($nimage);
  129. imagedestroy($simage);
  130. }
  131. if ($imgpreview == 1) {

  132. echo "
    图片预览:
    ";
  133. echo "php 上传图片的代码";
  134. }
  135. }
  136. }
  137. ?>