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PHP添加水印&比例缩略图&固定高度&固定宽度类

时间：2021-07-01 10:21:17 帮助过：36人阅读

PHP 添加水印 & 比例缩略图 & 固定高度 & 固定宽度 类。
使用foreach 循环处理的时候，需要 sleep 设定一个时间 或者 按照处理后的返回值 ，否则处理不完。

下载： http://pan.baidu.com/s/1ntKAfFF
  1. //文件名：image_process.class.php
  2. class Image_process{
  3. public $source;//原图
  4. public $source_width;//宽
  5. public $source_height;//高
  6. public $source_type_id;
  7. public $orign_name;
  8. public $orign_dirname;
  9. //传入图片路径
  10. public function __construct($source){
  11. $this->typeList = array(1=>'gif',2=>'jpg',3=>'png');
  12. $ginfo = getimagesize($source);
  13. $this->source_width = $ginfo[0];
  14. $this->source_height = $ginfo[1];
  15. $this->source_type_id= $ginfo[2];
  16. $this->orign_url = $source;
  17. $this->orign_name = basename($source);
  18. $this->orign_dirname = dirname($source);
  19. }
  21. //判断并处理,返回PHP可识别编码
  22. public function judgeType($type,$source){
  23. if($type==1){
  24. return ImageCreateFromGIF($source);//gif
  25. }else if($type==2){
  26. return ImageCreateFromJPEG($source);//jpg
  27. }else if($type==3){
  28. return ImageCreateFromPNG($source);//png
  29. }else{
  30. return false;
  31. }
  32. }
  34. //生成水印图
  35. public function watermarkImage($logo){
  36. $linfo = getimagesize($logo);
  37. $logo_width = $linfo[0];
  38. $logo_height = $linfo[1];
  39. $logo_type_id = $linfo[2];
  40. $sourceHandle = $this->judgeType($this->source_type_id,$this->orign_url);
  41. $logoHandle = $this->judgeType($logo_type_id,$logo);
  43. if( !$sourceHandle || ! $logoHandle ){
  44. return false;
  45. }
  46. $x = $this->source_width - $logo_width;
  47. $y = $this->source_height- $logo_height;
  49. ImageCopy($sourceHandle,$logoHandle,$x,$y,0,0,$logo_width,$logo_width) or die("fail to combine");
  50. $newPic = $this->orign_dirname .'\water_'. time().'.'. $this->typeList[$this->source_type_id];
  52. if( $this->saveImage($sourceHandle,$newPic)){
  53. imagedestroy($sourceHandle);
  54. imagedestroy($logoHandle);
  55. }
  56. }
  58. // fix 宽度
  59. // height = true 固顶高度
  60. // width = true 固顶宽度
  61. public function fixSizeImage($width,$height){
  62. if( $width > $this->source_width) $this->source_width;
  63. if( $height > $this->source_height ) $this->source_height;
  64. if( $width === false){
  65. $width = floor($this->source_width / ($this->source_height / $height));
  66. }
  67. if( $height === false){
  68. $height = floor($this->source_height / ($this->source_width / $width));
  69. }
  70. $this->tinyImage($width,$height);
  71. }
  73. //比例缩放
  74. // $scale 缩放比例
  75. public function scaleImage($scale){
  76. $width = floor($this->source_width * $scale);
  77. $height = floor($this->source_height * $scale);
  78. $this->tinyImage($width,$height);
  79. }
  81. //创建略缩图
  82. private function tinyImage($width,$height){
  83. $tinyImage = imagecreatetruecolor($width, $height );
  84. $handle = $this->judgeType($this->source_type_id,$this->orign_url);
  85. if(function_exists('imagecopyresampled')){
  86. imagecopyresampled($tinyImage,$handle,0,0,0,0,$width,$height,$this->source_width,$this->source_height);
  87. }else{
  88. imagecopyresized($tinyImage,$handle,0,0,0,0,$width,$height,$this->source_width,$this->source_height);
  89. }
  91. $newPic = time().'_'.$width.'_'.$height.'.'. $this->typeList[$this->source_type_id];
  92. $newPic = $this->orign_dirname .'\thumb_'. $newPic;
  93. if( $this->saveImage($tinyImage,$newPic)){
  94. imagedestroy($tinyImage);
  95. imagedestroy($handle);
  96. }
  97. }
  99. //保存图片
  100. private function saveImage($image,$url){
  101. if(ImageJpeg($image,$url)){
  102. return true;
  103. }
  104. }
  105. }
  1. //使用
  3. include('image_process.class.php');
  4. $m = array(
  5. 'D:\myspace\test\image_process\1.jpg',
  6. 'D:\myspace\test\image_process\2.jpg',
  7. 'D:\myspace\test\image_process\3.jpg',
  8. 'D:\myspace\test\image_process\4.jpg'
  9. );
  11. $img = 'D:\myspace\test\image_process\1.jpg';
  12. $logo = 'D:\myspace\test\image_process\logo.png';
  13. foreach( $m as $item){
  14. $s = new Image_process( $item );
  15. $s->watermarkImage($logo);
  16. $s->scaleImage(0.8);
  17. $s->fixSizeImage(200,false);
  18. sleep(1);
  19. }

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