PHP Image manipulation: 3D graph, zoom, rotate, crop, add watermark (iii) _php tutorial

PHP Image manipulation: 3D graph, zoom, rotate, crop, add watermark (iii)

Source: http://www.ido321.com/887.html

5, PHP rotation of the image

   2:     
Before rotation

   3:     

5:
 
   6:header ("Content-type", "text/html;charset=utf-8");
   7:  
   8:/*
   9: * Picture is rotated along the y-axis, for example in PNG format
  : * @param string $filename The URL of the picture
  11: */
  12:function turn_y ($filename)
  13: {
  */     * Create a picture resource */
  :     $backy = Imagecreatefrompng ($filename);
  16:  
  */     * Get size */
  :     $widthy = Imagesx ($backy);
  :     $heighty = Imagesy ($backy);
  20:  
  */     * Create a new picture resource, save the flipped picture */
  :     $newy = Imagecreatetruecolor ($widthy, $heighty);
  23:  
  +/     * Flips along the y-axis, copying the original image from right to left by one pixel width to the new resource individually */
  25:     
  :         imagecopy ($newy, $backy, $widthy-$i -1,0, $i, 0,1, $heighty);
  :     }
  28:  
  */     * Save the flipped picture */
  :     imagepng ($newy, ' http://www.bkjia.com/uploads/allimg/141009/0425435558-1.png ');
  31:  
  */     * FREE resources */
  :     Imagedestroy ($backy);
  :     Imagedestroy ($newy);
  35:}
  36:  
  37:/*
  38: * Picture is rotated along the x-axis, for example in PNG format
  In: * @param the URL of a string $filename picture
  40: */
  41:function turn_x ($filename)
  42: {
  */     * Create a picture resource */
  :     $backx = Imagecreatefrompng ($filename);
  45:  
  */     * Get size */
  A:     $widthx = Imagesx ($backx);
  :     $heightx = Imagesy ($backx);
  49:  
  */     * Create a new picture resource, save the flipped picture */
  Wuyi:     $newx = Imagecreatetruecolor ($widthx, $HEIGHTX);
  52:  
       -*/* flips along the x-axis, copying the original image from top to bottom by one pixel width to the new resource individually */
  54:     
  :         imagecopy ($newx, $backx, 0, $heightx-$i -1,0, $i, $WIDTHX, 1);
  :     }
  57:  
  */     * Save the flipped picture */
  :     imagepng ($newx, ' http://www.bkjia.com/uploads/allimg/141009/0425432228-2.png ');
  60:  
  A:/     * Release resources */
  :     Imagedestroy ($backx);
  A:     Imagedestroy ($NEWX);
  64:}
  65:/* Call function */
  66:turn_y (' http://www.bkjia.com/uploads/allimg/141009/0425435O8-0.png ');
  67:turn_x (' http://www.bkjia.com/uploads/allimg/141009/0425435O8-0.png ');
  :?>
  
  70:     
Rotate along the y axis
  71:     
  
  
  74:     
Rotate along the x axis
  75:     
  
Effect

http://www.bkjia.com/PHPjc/890204.html www.bkjia.com true http://www.bkjia.com/PHPjc/890204.html techarticle php Image manipulation: 3D graph, zoom, rotate, crop, add watermark (c) Source: http://www.ido321.com/887.html 5, PHP rotation of the image 1:2: Before rotation 3:4: 5:6: Header ("...
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